C — https://snu.ac.kr | BeaverCheck Audit

Site Health

Score: 74 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Well-optimized for search — your content is discoverable.

Good server performance with room for optimization.

Mostly compliant — a few items need attention.

Rich content metadata — your pages look great everywhere.

Heavier than average — reducing page weight saves energy and bandwidth.

How is this calculated?

The overall score is a weighted average of individual category scores. Categories with more impact on user experience and security carry more weight.

Performance 25%Security 25%Accessibility 15%SEO 10%Infrastructure 10%Compliance 8%Content 5%Sustainability 2%

Weights reflect general web best practices. Individual needs may differ.

How the composite score is calculated

How you compare

core-js · 1472 peers

You 74

Avg 72

At average

0 50 100

Better than 65% of core-js sites See full core-js benchmark →

Google Search Console · 3543 peers

You 74

Avg 73

At average

0 50 100

Better than 56% of Google Search Console sites See full Google Search Console benchmark →

Top Priorities (5)

'unsafe-eval' found in script source

Security gaps expose your site and users to attacks, eroding trust.

Security › Content Security Policy

Page weighs 19.5 MB (19.3 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget

1 control(s) without accessible label

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Form Accessibility

4 button(s) with no accessible text

Accessibility issues exclude users with disabilities — up to 15% of your potential audience.

Accessibility › Link & Button Quality

Cross-Origin-Embedder-Policy header is missing

Security gaps expose your site and users to attacks, eroding trust.

Security › Security Headers

View fix priority matrix

Fix Priority Matrix

5 findings

Impact

Quick Wins

High impact, low effort — start here.

Strategic

High impact, requires investment.

Easy Improvements

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →

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Markdown

[![BeaverCheck](https://beavercheck.com/badge?url=https%3A%2F%2Fsnu.ac.kr)](https://beavercheck.com/results/276d887a-9307-4140-9e62-4f8f0d5022e0)

HTML

<a href="https://beavercheck.com/results/276d887a-9307-4140-9e62-4f8f0d5022e0"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fsnu.ac.kr" alt="BeaverCheck Score"></a>

Image URL

https://beavercheck.com/badge?url=https%3A%2F%2Fsnu.ac.kr

This badge auto-updates with your latest scan result.

What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. Your LCP of 40.6s exceeds Google's 2.5s 'Good' threshold and the 1 performance issue below directly contributes to it. Accessibility issues exclude users who rely on assistive technology — an estimated 15% of your potential audience. Addressing the critical issues below would have the most immediate impact on your user trust.

2 security gaps detected — browsers may warn visitors about your site.

Your LCP is 40.6s — fixing the 1 performance critical could bring it under Google's 2.5s 'Good' threshold.

2 accessibility issues exclude users who rely on assistive technology.

Could reach Estimate based on resolving critical issues

Conversion Barriers

1 critical 5 warning

6 barrier(s) likely increasing bounce by ~25%.

Speed (1)

Page takes 40.6s to load

+12% bounce

Users abandon at ~3s — you're 38.1s over the 2.5s threshold

Fix: Optimize render-blocking resources, preload the hero image, and compress images

Trust (1)

No Content-Security-Policy header

+1% bounce

Higher XSS blast radius — one compromised script can exfiltrate the checkout form

Fix: Ship a reporting-only CSP first, then enforce once violations are clean

Usability (2)

1 form field(s) without a label

+2% bounce

Screen readers skip unlabeled fields; autofill can't identify them; checkout abandonment spikes

Fix: Associate every input with a visible <label for="…">; add autocomplete attributes

Viewport disables user zoom

+2% bounce

Visitors with low vision can't read the page — and some jurisdictions treat this as a legal risk

Fix: Remove user-scalable=no; drop maximum-scale if it's below 2

Navigation (2)

No skip-to-content link

+1% bounce

Keyboard and screen-reader users must tab through the entire header on every page

Fix: Add a visible-on-focus <a href="#main">Skip to content</a> as the first focusable element

2 broken link(s) on the page

+3% bounce

Clicks land on 404s — trust drops and the session often ends

Fix: Fix or remove the broken destinations surfaced on the Content tab

Preliminary CRO audit — each barrier links to the tab with detailed analysis.

Return on Investment

₩420,000 investment → ₩6,574/month returns + KRW 3,000,000,000 risk avoided

Payback period: > 2 years First-year ROI: -81%

Investment

₩420,000

6h · 5 findings

Monthly returns

₩6,574 /mo

~₩78,890 / year

Bandwidth savings ₩6,574

Regulatory risk avoided

KRW 3,000,000,000

if kept compliant

PIPA KRW 3,000,000,000

₩70,000 — in quick wins — start here for the fastest payback

Figures combine localized regulatory fine ceilings, search/conversion value priced against local CPC, and bandwidth waste estimates. Results depend on implementation quality and audience composition. Not legal or financial advice.

Full methodology & sources

Estimated Remediation Cost

₩420,000

6.0 developer hours at ₩70000/hr

Based on South Korea rates (₩70000/hr)

Quick wins

₩70,000 2 fixes in ~60 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions

Custom rate

₩ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

₩250,006,574 / month at risk

~₩3,000,078,890 / year if left unfixed

Compliance Risk

₩3,000,000,000

PIPA

No privacy policy link detected
PIPA: KRW 1,000,000 – KRW 3,000,000,000
Trackers detected but no cookie policy found
PIPA: KRW 1,000,000 – KRW 3,000,000,000
Trackers detected but no privacy policy found
PIPA: KRW 1,000,000 – KRW 3,000,000,000

+1 more

Bandwidth Waste

₩6,574 /mo

60811.1 MB/mo × 108.108 KRW/GB

Optimize transfer: save ~6.1 MB per page load
Saves ₩6,574/mo

Compliance figures represent the statutory maximum fine for the most severe triggered category, capped per regulation — not the sum of per-finding penalties. Based on published regulatory fine ranges. This is not legal advice.

Compliance methodology · SEO assumptions · Bandwidth model

Your performance is already good — improvements may show diminishing returns

Monthly visitors

Unique monthly visitors from your analytics

Conversion rate (%)

Purchases, signups, or key actions

Avg. order value

Optional — for revenue estimation

additional conversions/month

more engaged visitors from reduced bounce

potential monthly revenue

Current bounce (est.)

After fixes (est.)

Estimated bounce reduction

Fix 4 critical issues to capture this value

How this is calculated

Based on Google/Deloitte research ("Milliseconds Make Millions") showing a ~7% bounce rate increase per additional second of LCP above the 2.5s "Good" threshold.

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

Your data stays in your browser — nothing is sent to our servers

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience.

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

14.36 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

40.58 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

83 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.049

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

25.86 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

42.50 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile Baseline features, unless you know you must support older browsers. Learn why most sites can deploy ES6+ code without transpiling

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Most users today run browsers that natively support ES6+, async/await, optional chaining, and the rest of modern JavaScript. Transpiling to ES5 'just in case' adds 20-40% to your bundle for no benefit. Configure your build to target a modern browserslist, or ship a differential bundle pair (modern + legacy) with the module/nomodule pattern.

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...	604800.0 s	623.3 KiB
snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png	604800.0 s	490.4 KiB
/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...	604800.0 s	481.4 KiB
snu.ac.kr/_skin/kor/layout/font/noto-serif-kr-v6-latin_korean-regular.woff2	604800.0 s	478.9 KiB
/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...	604800.0 s	476.4 KiB
/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...	604800.0 s	469.4 KiB
snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png	604800.0 s	468.2 KiB
snu.ac.kr/webdata/kor/instanews/2ddzd68z767z535zce8z320z5a4z1a6z46fzde5z6b.png	604800.0 s	466.1 KiB
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	604800.0 s	457.9 KiB
snu.ac.kr/js/jquery-ui-1.10.js	604800.0 s	425.1 KiB
/webdata/boardimages/konews/6a7z4d6zc6ez103zaf0zbd9zb38z9...	604800.0 s	423.7 KiB
snu.ac.kr/webdata/kor/instanews/c5bze68z98ez3fez481zc8ez6f9z296zc1ez8f0zcf.png	604800.0 s	422.5 KiB
/webdata/boardimages/konews/1b6zb2bzab0ze8bz909zedbz21fze...	604800.0 s	367.8 KiB
snu.ac.kr/webdata/kor/instanews/2c0z832zf5fz184ze68z9c6zc28zdffz4c1z485z17.png	604800.0 s	350.6 KiB
snu.ac.kr/webdata/kor/instanews/6faz210zd02z51fza6bzccbz968zb42z3ffz440z99.png	604800.0 s	315.2 KiB
/webdata/boardimages/kohighlight/825zaf1ze52z6d4zb1azd79z...	604800.0 s	258.9 KiB
snu.ac.kr/webdata/kor/instanews/ff3zec8zf37zeecz847zdbbz01ez048z2d4za5bzdf.png	604800.0 s	255.1 KiB
snu.ac.kr/webdata/kor/instanews/1d0z29dz08az482z07fzfa5zb01zce0z63cz138z5d.png	604800.0 s	252.2 KiB
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-700.woff2	604800.0 s	217.9 KiB
/webdata/boardimages/kohighlight/270ze0eza07zb6az3a4z0abz...	604800.0 s	217.6 KiB
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-500.woff2	604800.0 s	212.1 KiB
/webdata/boardimages/konews/adfza67zaaez74cz61ezd06zc45zd...	604800.0 s	211.9 KiB
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-regular.woff2	604800.0 s	209.7 KiB
/webdata/boardimages/kohighlight/fc9zd8dze5czcb6ze4fz312z...	604800.0 s	200.4 KiB
snu.ac.kr/webdata/kor/instanews/89bzb4fzeacz13azfc7z4f9z9d9z8ebz1f6z313zd0.png	604800.0 s	200.1 KiB
/webdata/boardimages/kohighlight/3c2z3dfzfbaz357zd64z17dz...	604800.0 s	189.5 KiB
snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_web.jpg	604800.0 s	165.6 KiB
ssl.pstatic.net/melona/libs/gfp-nac-module/synchronizer.js	1361.0 s	18.2 KiB
snu.ac.kr/webdata/kor/instanews/000z6e6ze1dzd19z3abz09bz00ezd19zcafz104z0e.png	604800.0 s	108.9 KiB
wcs.naver.net/wcslog.js	130.0 s	10.5 KiB
snu.ac.kr/js/jquery.js	604800.0 s	88.0 KiB
/webdata/boardimages/konews/4fbzb94z420zedfz0a7zefcz282z9...	604800.0 s	61.2 KiB
/webdata/boardimages/koevent/44ez3eaz175z6bfzafcz79dz596z...	604800.0 s	46.4 KiB
snu.ac.kr/js/slick.min.js?ver=2026-02-24	604800.0 s	44.4 KiB
snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_mobile.jpg	604800.0 s	39.6 KiB
/webdata/boardimages/koevent/9b9z9b0z59fz60dz687z8b6z38cz...	604800.0 s	38.9 KiB
/webdata/boardimages/koevent/066z86az2c0z82dz480z5eczaf2z...	604800.0 s	37.0 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/03/index-topbanner-text_sm.png	604800.0 s	33.6 KiB
/webdata/boardimages/koevent/8e4ze5cz3e0zca0za34zc91z050z...	604800.0 s	30.0 KiB
snu.ac.kr/webdata/uploads/kor/image/2021/04/if_designaward2021_red_l_rgb.png	604800.0 s	24.9 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-topbanner-symbol_sm.png	604800.0 s	23.7 KiB
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-500.woff2	604800.0 s	17.7 KiB
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-700.woff2	604800.0 s	17.6 KiB
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-regular.woff2	604800.0 s	17.5 KiB
snu.ac.kr/_skin/kor/layout/js/webfont.js	604800.0 s	15.6 KiB
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	604800.0 s	15.5 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/03/index-topbanner-text_lg.png	604800.0 s	14.7 KiB
snu.ac.kr/_skin/kor/layout/css/font.css	604800.0 s	13.8 KiB
snu.ac.kr/_skin/kor/layout/image/footer-wa_sm.png	604800.0 s	12.3 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-topbanner-symbol_lg.png	604800.0 s	11.5 KiB
snu.ac.kr/_skin/kor/layout/image/footer-snunow_lg.png	604800.0 s	9.8 KiB
snu.ac.kr/_skin/kor/layout/image/footer-snunow_sm.png	604800.0 s	8.3 KiB
snu.ac.kr/_skin/kor/layout/image/snu-logo_sm.png	604800.0 s	7.1 KiB
snu.ac.kr/_skin/kor/layout/image/footer-wa_lg.png	604800.0 s	6.9 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_sm.png	604800.0 s	6.6 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_sm.png	604800.0 s	6.4 KiB
snu.ac.kr/js/zenda-site.js?ver=2026-02-24	604800.0 s	6.4 KiB
snu.ac.kr/_skin/kor/layout/image/footer-facebook_lg.png	604800.0 s	6.2 KiB
snu.ac.kr/_skin/kor/layout/image/footer-snubird_sm.png	604800.0 s	6.1 KiB
snu.ac.kr/_skin/kor/layout/image/icon-sns-insta-32.png	604800.0 s	5.9 KiB
snu.ac.kr/_skin/kor/layout/image/footer-instagram_sm.png	604800.0 s	5.6 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_lg.png	604800.0 s	5.4 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_lg.png	604800.0 s	5.3 KiB
snu.ac.kr/_skin/kor/layout/image/footer-facebook_sm.png	604800.0 s	5.2 KiB
snu.ac.kr/_skin/kor/layout/image/footer-snubird_lg.png	604800.0 s	5.0 KiB
snu.ac.kr/_skin/kor/layout/image/footer-youtube_sm.png	604800.0 s	4.9 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-visual-controller.png	604800.0 s	4.8 KiB
snu.ac.kr/_skin/kor/layout/js/responsive.js?ver=2026-02-24	604800.0 s	4.7 KiB
snu.ac.kr/_skin/kor/layout/image/footer-instagram_lg.png	604800.0 s	4.5 KiB
snu.ac.kr/_skin/kor/layout/image/footer-youtube_lg.png	604800.0 s	4.2 KiB
snu.ac.kr/_skin/kor/layout/js/gnb.js?ver=2026-02-24	604800.0 s	4.1 KiB
snu.ac.kr/_skin/kor/layout/image/header-visitgnb-btn_sm.png	604800.0 s	4.0 KiB
snu.ac.kr/_skin/kor/layout/image/icon-videos-arrow_lg.png	604800.0 s	4.0 KiB
snu.ac.kr/_skin/kor/layout/image/header-subgnb-search_sm.png	604800.0 s	3.9 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-slider-play_sm.png	604800.0 s	3.8 KiB
snu.ac.kr/_skin/kor/layout/image/header-subgnb-search_lg.png	604800.0 s	3.8 KiB
snu.ac.kr/_skin/kor/layout/image/header-gnb-d2-close_sm.png	604800.0 s	3.7 KiB
snu.ac.kr/_skin/kor/layout/image/icon-more-arrow-right_sm.png	604800.0 s	3.6 KiB
snu.ac.kr/_skin/kor/layout/image/guide-select-icon_sm.png	604800.0 s	3.6 KiB
snu.ac.kr/_skin/kor/layout/image/icon-newwindow_lg.png	604800.0 s	3.6 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-slider-stop_sm.png	604800.0 s	3.5 KiB
snu.ac.kr/js/jquery-migrate-3.0.0.min.js	604800.0 s	2.5 KiB

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
snu.ac.kr/_skin/kor/layout/font/noto-serif-kr-v6-latin_korean-regular.woff2	2.6 s
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-regular.woff2	2.5 s
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-500.woff2	1.9 s
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-700.woff2	1.0 s
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-500.woff2	310 ms
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-700.woff2	305 ms
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-regular.woff2	300 ms

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
[샤로잡다 시즌2] 나노기술로 질병도 정복할 수 있을까? `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...	621.0 KiB	562.4 KiB
yellow yellow yellow `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png	488.1 KiB	447.4 KiB
눈부신 봄날의 캠퍼스 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png	465.9 KiB	425.2 KiB
제66주년 4·19혁명 희생자 추모 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/2ddzd68z767z535zce8z320z5a4z1a6z46fzde5z6b.png	463.7 KiB	423.0 KiB
[샤로잡다 시즌2] 극락도 락이다, 힙불교 제대로 알아보기 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...	479.0 KiB	420.5 KiB
‘도서관 속 작은 펼침, 세상을 여는 큰 열림’, 2026 도서관의 날 도서관 주간 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...	474.1 KiB	415.5 KiB
경계 없는 지식의 확산, 서울대학교 공식 유튜브 20만 구독자 돌파 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...	467.1 KiB	408.5 KiB
서울대생을 위한 벚꽃 맛 스티커 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/c5bze68z98ez3fez481zc8ez6f9z296zc1ez8f0zcf.png	420.2 KiB	379.5 KiB
여자핸드볼부, 제81회 전국종별핸드볼선수권대회 전승 우승 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/6a7z4d6zc6ez103zaf0zbd9zb38z9...	421.4 KiB	362.8 KiB
중간고사 A+ 맞는 주파수 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/2c0z832zf5fz184ze68z9c6zc28zdffz4c1z485z17.png	348.3 KiB	307.6 KiB
AI 네이티브 캠퍼스로의 도약, 서울대학교 AI Summit 2026 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/1b6zb2bzab0ze8bz909zedbz21fze...	365.4 KiB	306.8 KiB
Full Blossom at SNU `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/6faz210zd02z51fza6bzccbz968zb42z3ffz440z99.png	312.8 KiB	272.2 KiB
고유전체로 밝힌 삼국시대 지역 사회에서의 친족 네트워크와 족내혼 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/825zaf1ze52z6d4zb1azd79z...	256.6 KiB	234.7 KiB
26학번 새내기 앙케이트 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/ff3zec8zf37zeecz847zdbbz01ez048z2d4za5bzdf.png	252.8 KiB	212.1 KiB
Flower Walk at SNU `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/1d0z29dz08az482z07fzfa5zb01zce0z63cz138z5d.png	249.9 KiB	209.2 KiB
고형암 치료의 난제 ‘항원탈락’을 극복하는 차세대 CAR-NK 플랫폼 개발 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/270ze0eza07zb6az3a4z0abz...	215.2 KiB	193.3 KiB
새로 제2형 당뇨병을 진단받은 남성 흡연자, 금연 후 ‘체중 유지’가 골절 위험 낮춘다 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/fc9zd8dze5czcb6ze4fz312z...	198.1 KiB	176.1 KiB
“몸 안 좋을 때 술 마시면 왜 더 위험할까?” 염증 상황에서의 알코올성 간 손상 기전 규명 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/3c2z3dfzfbaz357zd64z17dz...	187.1 KiB	165.2 KiB
교수님! 출연해주세요! `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/89bzb4fzeacz13azfc7z4f9z9d9z8ebz1f6z313zd0.png	197.8 KiB	157.1 KiB
장애인과 함께 살아가는 세상을 위해, 공익법률센터 세미나 ‘공공정책의 수단으로서의 장애인권리협약’ `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/adfza67zaaez74cz61ezd06zc45zd...	209.5 KiB	150.9 KiB
샤대타로 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/000z6e6ze1dzd19z3abz09bz00ezd19zcafz104z0e.png	106.6 KiB	65.9 KiB
[Asia and the World]Youth, Creativity, and Cultural Power(4/23) ([아시아와 세계] 청년, … `div.ly-inner > div.board-index-img2 > a.item > span.thumb`	/webdata/boardimages/koevent/066z86az2c0z82dz480z5eczaf2z...	34.7 KiB	24.9 KiB
샤인기부, 당신이 만드는 빛나는 변화, 샤인 굿즈 받기 `div#skip-content > div.ly-container > a.inner > img.only-mobile`	snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_mobile.jpg	37.3 KiB	24.6 KiB

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:986.904 label:Time to first byte subpart:timeToFirstByte] map[duration:4443.605 label:Resource load delay subpart:resourceLoadDelay] map[duration:0 label:Resource load duration subpart:resourceLoadDuration] map[duration:9756.695 label:Element render delay subpart:elementRenderDelay]]

lhId: page-23-VIDEO

nodeLabel: div.slide > div.slide-bg > div.bg > video#banner-video00

path: 1,HTML,1,BODY,8,MAIN,1,DIV,4,SECTION,5,DIV,1,DIV,3,DIV,1,DIV,1,VIDEO

selector: div.slide > div.slide-bg > div.bg > video#banner-video00

snippet: <video id="banner-video00" playsinline="" muted="" autoplay="" loop="">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-23-VIDEO

nodeLabel: div.slide > div.slide-bg > div.bg > video#banner-video00

path: 1,HTML,1,BODY,8,MAIN,1,DIV,4,SECTION,5,DIV,1,DIV,3,DIV,1,DIV,1,VIDEO

selector: div.slide > div.slide-bg > div.bg > video#banner-video00

snippet: <video id="banner-video00" playsinline="" muted="" autoplay="" loop="">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
snu.ac.kr/	http/1.1
snu.ac.kr/_skin/kor/layout/js/webfont.js	http/1.1
snu.ac.kr/js/jquery.js	http/1.1
snu.ac.kr/js/jquery-migrate-3.0.0.min.js	http/1.1
snu.ac.kr/js/jquery-ui-1.10.js	http/1.1
snu.ac.kr/js/slick.min.js?ver=2026-02-24	http/1.1
snu.ac.kr/js/zenda-site.js?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/js/gnb.js?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/js/responsive.js?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/image/header-subgnb-search_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/css/font.css	http/1.1
snu.ac.kr/_skin/kor/layout/image/header-subgnb-search_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/header-gnb-d2-close_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-topbanner-symbol_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-topbanner-symbol_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/03/index-topbanner-text_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/03/index-topbanner-text_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-slider-stop_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-slider-play_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/media/2026/02/80emblem_main.svg	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_lg.png	http/1.1
/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...	http/1.1
/webdata/boardimages/kohighlight/fc9zd8dze5czcb6ze4fz312z...	http/1.1
/webdata/boardimages/konews/adfza67zaaez74cz61ezd06zc45zd...	http/1.1
/webdata/boardimages/konews/4fbzb94z420zedfz0a7zefcz282z9...	http/1.1
/webdata/boardimages/konews/6a7z4d6zc6ez103zaf0zbd9zb38z9...	http/1.1
/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...	http/1.1
/webdata/boardimages/kohighlight/3c2z3dfzfbaz357zd64z17dz...	http/1.1
/webdata/boardimages/kohighlight/825zaf1ze52z6d4zb1azd79z...	http/1.1
/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...	http/1.1
/webdata/boardimages/kohighlight/270ze0eza07zb6az3a4z0abz...	http/1.1
/webdata/boardimages/konews/1b6zb2bzab0ze8bz909zedbz21fze...	http/1.1
/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...	http/1.1
snu.ac.kr/webdata/kor/instanews/c5bze68z98ez3fez481zc8ez6f9z296zc1ez8f0zcf.png	http/1.1
snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png	http/1.1
snu.ac.kr/webdata/kor/instanews/1d0z29dz08az482z07fzfa5zb01zce0z63cz138z5d.png	http/1.1
snu.ac.kr/webdata/kor/instanews/2ddzd68z767z535zce8z320z5a4z1a6z46fzde5z6b.png	http/1.1
snu.ac.kr/webdata/kor/instanews/2c0z832zf5fz184ze68z9c6zc28zdffz4c1z485z17.png	http/1.1
snu.ac.kr/webdata/kor/instanews/6faz210zd02z51fza6bzccbz968zb42z3ffz440z99.png	http/1.1
snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png	http/1.1
snu.ac.kr/webdata/kor/instanews/ff3zec8zf37zeecz847zdbbz01ez048z2d4za5bzdf.png	http/1.1
snu.ac.kr/webdata/kor/instanews/89bzb4fzeacz13azfc7z4f9z9d9z8ebz1f6z313zd0.png	http/1.1
snu.ac.kr/webdata/kor/instanews/000z6e6ze1dzd19z3abz09bz00ezd19zcafz104z0e.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_mobile.jpg	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_web.jpg	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-regular.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/font/noto-serif-kr-v6-latin_korean-regular.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-regular.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-snunow_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-snunow_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-snubird_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-snubird_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-facebook_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-facebook_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-youtube_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-youtube_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-instagram_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-instagram_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2021/04/if_designaward2021_red_l_rgb.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-wa_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-wa_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/snu-logo_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/header-visitgnb-btn_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-visual-controller.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/icon-newwindow_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/icon-sns-insta-32.png	http/1.1
/webdata/boardimages/koevent/066z86az2c0z82dz480z5eczaf2z...	http/1.1
/webdata/boardimages/koevent/9b9z9b0z59fz60dz687z8b6z38cz...	http/1.1
/webdata/boardimages/koevent/8e4ze5cz3e0zca0za34zc91z050z...	http/1.1
/webdata/boardimages/koevent/44ez3eaz175z6bfzafcz79dz596z...	http/1.1
snu.ac.kr/_skin/kor/layout/image/icon-more-arrow-right_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/guide-select-icon_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-700.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-500.woff2	http/1.1
snu.ac.kr/webdata/uploads/kor/media/2020/02/01_gate.mp4	http/1.1
snu.ac.kr/webdata/uploads/kor/media/2020/02/03_library.mp4	http/1.1
snu.ac.kr/webdata/uploads/kor/media/2026/04/202604-2020x800_spring.mp4	http/1.1
snu.ac.kr/_skin/kor/layout/image/icon-videos-arrow_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-700.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-500.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/ico/favicon.ico	http/1.1

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
snu.ac.kr/js/jquery-ui-1.10.js	425.1 KiB	10.5 s
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	457.9 KiB	10.5 s
snu.ac.kr/_skin/kor/layout/js/responsive.js?ver=2026-02-24	4.7 KiB	1.3 s
snu.ac.kr/js/slick.min.js?ver=2026-02-24	44.4 KiB	2.6 s
snu.ac.kr/_skin/kor/layout/js/gnb.js?ver=2026-02-24	4.1 KiB	1.3 s
snu.ac.kr/js/zenda-site.js?ver=2026-02-24	6.4 KiB	1.3 s
snu.ac.kr/js/jquery.js	88.0 KiB	4.0 s
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	15.5 KiB	1.8 s
snu.ac.kr/js/jquery-migrate-3.0.0.min.js	2.5 KiB	1.3 s
snu.ac.kr/_skin/kor/layout/js/webfont.js	15.6 KiB	1.8 s

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

The maximum potential First Input Delay that your users could experience is the duration of the longest task. Learn more about the Maximum Potential First Input Delay metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 440 ms 59.7 KiB

URL	Transfer Size	Est Savings
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	457.9 KiB	57.5 KiB
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	15.5 KiB	2.2 KiB

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 440 ms 145.4 KiB

URL	Transfer Size	Est Savings
snu.ac.kr/js/jquery-ui-1.10.js	422.5 KiB	141.8 KiB
inline: $(function() { /…	10.0 KiB	3.6 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 2.2 s 456.0 KiB

URL	Transfer Size	Est Savings
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	455.3 KiB	431.9 KiB
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	12.9 KiB	12.9 KiB
snu.ac.kr/_skin/kor/layout/css/font.css	11.2 KiB	11.2 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

This is the Lighthouse audit fired when too much JS is shipped relative to what executes. The fix isn't a config flag — it requires bundle analysis (webpack-bundle-analyzer, rollup-plugin-visualizer), splitting routes into chunks, lazy-loading off-screen components, and removing unused dependencies. Fundamentally different from minification: minifying reduces byte count, this reduces what's downloaded at all.

Source: Google web.dev / Lighthouse

Estimated savings: 2.2 s 468.2 KiB

URL	Transfer Size	Est Savings
snu.ac.kr/js/jquery-ui-1.10.js	422.5 KiB	369.6 KiB
www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3	153.0 KiB	64.0 KiB
snu.ac.kr/js/jquery.js	85.5 KiB	34.6 KiB

Consider reducing the time spent parsing, compiling and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to minimize main-thread work

Why this matters

Performance issues directly impact user engagement and conversion rates.

Category	Time Spent
Other	1.7 s
Script Evaluation	506 ms
Style & Layout	488 ms
Rendering	224 ms
Script Parsing & Compilation	109 ms
Parse HTML & CSS	65 ms

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
snu.ac.kr/webdata/uploads/kor/media/2026/04/202604-2020x800_spring.mp4	4.2 MiB
snu.ac.kr/webdata/uploads/kor/media/2020/02/01_gate.mp4	3.7 MiB
snu.ac.kr/webdata/uploads/kor/media/2020/02/03_library.mp4	1.2 MiB
/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...	623.3 KiB
snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png	490.4 KiB
/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...	481.4 KiB
snu.ac.kr/_skin/kor/layout/font/noto-serif-kr-v6-latin_korean-regular.woff2	478.9 KiB
/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...	476.4 KiB
/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...	469.4 KiB
snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png	468.2 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
iF Design Award `ul.information-info-acc > li > a > img.web-accessibility-mark`	snu.ac.kr/webdata/uploads/kor/image/2021/04/if_designaward2021_red_l_rgb.png
‘도서관 속 작은 펼침, 세상을 여는 큰 열림’, 2026 도서관의 날 도서관 주간 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...
장애인과 함께 살아가는 세상을 위해, 공익법률센터 세미나 ‘공공정책의 수단으로서의 장애인권리협약’ `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/adfza67zaaez74cz61ezd06zc45zd...
무한한 상상, 담대한 도전, 새로운 미래… 개교 80주년 기념 표어·엠블럼 공개 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/4fbzb94z420zedfz0a7zefcz282z9...
여자핸드볼부, 제81회 전국종별핸드볼선수권대회 전승 우승 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/6a7z4d6zc6ez103zaf0zbd9zb38z9...
[샤로잡다 시즌2] 극락도 락이다, 힙불교 제대로 알아보기 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...
경계 없는 지식의 확산, 서울대학교 공식 유튜브 20만 구독자 돌파 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...
AI 네이티브 캠퍼스로의 도약, 서울대학교 AI Summit 2026 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/1b6zb2bzab0ze8bz909zedbz21fze...
[샤로잡다 시즌2] 나노기술로 질병도 정복할 수 있을까? `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...
서울대생을 위한 벚꽃 맛 스티커 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/c5bze68z98ez3fez481zc8ez6f9z296zc1ez8f0zcf.png
yellow yellow yellow `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png
Flower Walk at SNU `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/1d0z29dz08az482z07fzfa5zb01zce0z63cz138z5d.png
제66주년 4·19혁명 희생자 추모 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/2ddzd68z767z535zce8z320z5a4z1a6z46fzde5z6b.png
중간고사 A+ 맞는 주파수 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/2c0z832zf5fz184ze68z9c6zc28zdffz4c1z485z17.png
Full Blossom at SNU `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/6faz210zd02z51fza6bzccbz968zb42z3ffz440z99.png
눈부신 봄날의 캠퍼스 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png
26학번 새내기 앙케이트 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/ff3zec8zf37zeecz847zdbbz01ez048z2d4za5bzdf.png
교수님! 출연해주세요! `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/89bzb4fzeacz13azfc7z4f9z9d9z8ebz1f6z313zd0.png
샤대타로 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/000z6e6ze1dzd19z3abz09bz00ezd19zcafz104z0e.png
샤인기부, 당신이 만드는 빛나는 변화, 샤인 굿즈 받기 `div#skip-content > div.ly-container > a.inner > img.only-mobile`	snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_mobile.jpg
새로 제2형 당뇨병을 진단받은 남성 흡연자, 금연 후 ‘체중 유지’가 골절 위험 낮춘다 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/fc9zd8dze5czcb6ze4fz312z...
“몸 안 좋을 때 술 마시면 왜 더 위험할까?” 염증 상황에서의 알코올성 간 손상 기전 규명 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/3c2z3dfzfbaz357zd64z17dz...
고유전체로 밝힌 삼국시대 지역 사회에서의 친족 네트워크와 족내혼 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/825zaf1ze52z6d4zb1azd79z...
고형암 치료의 난제 ‘항원탈락’을 극복하는 차세대 CAR-NK 플랫폼 개발 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/270ze0eza07zb6az3a4z0abz...
80주년 엠블럼 `div.nonslider > div.slide > div.slider-copy > img.symbol`	snu.ac.kr/webdata/uploads/kor/media/2026/02/80emblem_main.svg
지금 서울대학교에서는 `div.common-boardtitle > div.bg-wrap > h2.title > img.only-mobile`	snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_sm.png
서울대학교 캘린더 `div.common-boardtitle > div.bg-wrap > p.title > img.only-mobile`	snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_sm.png
과학기술정보통신부 WEB ACCESSIBILITY 마크(웹 접근성 품질인증 마크) `div.information-footer-inner > ul.information-info-acc > li > img.only-mobile`	snu.ac.kr/_skin/kor/layout/image/footer-wa_sm.png
SNUNOW `ul.social-ul > li > a > img.only-mobile`	snu.ac.kr/_skin/kor/layout/image/footer-snunow_sm.png
인스타그램 `ul.social-ul > li > a > img.only-mobile`	snu.ac.kr/_skin/kor/layout/image/footer-instagram_sm.png
스누새편지 `ul.social-ul > li > a > img.only-mobile`	snu.ac.kr/_skin/kor/layout/image/footer-snubird_sm.png
유튜브 `ul.social-ul > li > a > img.only-mobile`	snu.ac.kr/_skin/kor/layout/image/footer-youtube_sm.png
페이스북 `ul.social-ul > li > a > img.only-mobile`	snu.ac.kr/_skin/kor/layout/image/footer-facebook_sm.png

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●Optimize viewport for mobile

●User Timing marks and measures 5 user timings

●JavaScript execution time 0.5 s

●Avoid long main-thread tasks 5 long tasks found

●Avoid non-composited animations 10 animated elements found

●Network Requests

●Network Round Trip Times 290 ms

●Server Backend Latencies 20 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 390 ms

●Avoid large layout shifts 1 layout shift found

○INP breakdown

Accessibility

These checks highlight opportunities to improve the accessibility of your web app. Automatic detection can only detect a subset of issues and does not guarantee the accessibility of your web app, so manual testing is also encouraged.

ARIA

Focusable descendents within an `[aria-hidden="true"]` element prevent those interactive elements from being available to users of assistive technologies like screen readers. Learn how `aria-hidden` affects focusable elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
인스타그램 yellow yellow yellow 캠퍼스는 지금 노랑노랑노랑! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 Flower Walk at SNU 꽃으로 만개한 봄날의 캠퍼스, 함께 걸을까요? `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 제66주년 4·19혁명 희생자 추모 제66주년 4·19 혁명 희생자 추모행사가 금일 오전, 서울대학교 4·19 혁명 희생자 추모공… `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 중간고사 A+ 맞는 주파수 여러분의 중간고사 대박을 응원합니다! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 Full Blossom at SNU 완연히 만개한 서울대학교 봄 풍경 `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 눈부신 봄날의 캠퍼스 눈부시게 빛나는 봄날의 캠퍼스 풍경 `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 26학번 새내기 앙케이트 26학번 새내기에게 묻는다! 서울대학교 입학 후 가장 하고싶었던 일은?! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 교수님! 출연해주세요! 교수님! 〈샤로잡다〉에 추천해주세요! 학생들이 직접 추천한 교수님들?! 누가 있을까요~? `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 샤대타로 여러분의 1학기 운세, 지금 샤대타로에서 확인해보세요! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
08826 서울시 관악구 관악로 1 서울대학교 `div.information-info > div.information-info-area > div.area-address > span`
TEL. (02) 880-5114 `div.information-info > div.information-info-area > div.area-address > span`
(02) 880-5114 `div.information-info-area > div.area-address > span > a.tel`
FAX. (02) 885-5272 `div.information-info > div.information-info-area > div.area-address > span`
Copyright 2026 Seoul National University All Rights Reserved. `div.information-info > div.information-info-area > div.area-copy > p`

These are opportunities to improve the legibility of your content.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
이전 인스타그램 서울대생을 위한 벚꽃 맛 스티커 서울대생을 위한 벚꽃 맛 스티커 등장! 인스타그램 yellow yellow yellow … `main.ly-main > div#skip-content > section.ly-section > ul.instaslide`
정보공시 교내기관 안내 서울대포털 클린행정센터 개인정보처리방침 이메일무단수집거부 복지보조금 부정 신고 사이트맵 `div.information-footer > div.information-footer-inner > div.information-terms > ul.terms-ul`

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
인스타그램 서울대생을 위한 벚꽃 맛 스티커 서울대생을 위한 벚꽃 맛 스티커 등장! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
head > meta `head > meta`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●Select elements have associated label elements.

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○No element has a `[tabindex]` value greater than 0

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source Description

Source	Description
www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3 line 222, col 390	Connecting to 'https://region1.google-analytics.com/g/collect?v=2&tid=G-GX37CPT7T3&gtm=45je64k0v884708608za200zd884708608&_p=1776893156964&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1056506807.1776893157&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938468~117266400~117512542&sid=1776893157&sct=1&seg=0&dl=https%3A%2F%2Fsnu.ac.kr%2F&dt=%EC%84%9C%EC%9A%B8%EB%8C%80%ED%95%99%EA%B5%90&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=5612' violates the following Content Security Policy directive: "default-src 'self' https://www.snu.ac.kr https://en.snu.ac.kr https://admission.snu.ac.kr https://identity.snu.ac.kr https://adminservice.snu.ac.kr https://www.google-analytics.com https://nam.veta.naver.com https://wcs.naver.com https://www.google-analytics.com". Note that 'connect-src' was not explicitly set, so 'default-src' is used as a fallback. The action has been blocked.
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Connecting to 'https://region1.google-analytics.com/g/collect?v=2&tid=G-GX37CPT7T3&gtm=45je64k0v884708608za200zd884708608&_p=1776893156964&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1056506807.1776893157&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938468~117266400~117512542&sid=1776893157&sct=1&seg=0&dl=https%3A%2F%2Fsnu.ac.kr%2F&dt=%EC%84%9C%EC%9A%B8%EB%8C%80%ED%95%99%EA%B5%90&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=5612' violates the following Content Security Policy directive: "default-src 'self' https://www.snu.ac.kr https://en.snu.ac.kr https://admission.snu.ac.kr https://identity.snu.ac.kr https://adminservice.snu.ac.kr https://www.google-analytics.com https://nam.veta.naver.com https://wcs.naver.com https://www.google-analytics.com". Note that 'connect-src' was not explicitly set, so 'default-src' is used as a fallback. The action has been blocked.

www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3 line 222, col 390

Fetch API cannot load https://region1.google-analytics.com/g/collect?v=2&tid=G-GX37CPT7T3&gtm=45je64k0v884708608za200zd884708608&_p=1776893156964&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1056506807.1776893157&frm=0&pscdl=noapi&rcb=5&sr=412x823&uaa=&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=moto%20g%20power%20(2022)&uamb=1&uap=Android&uapv=11.0&uaw=0&ul=en-us&_s=1&tag_exp=0~115616986~115938466~115938468~117266400~117512542&sid=1776893157&sct=1&seg=0&dl=https%3A%2F%2Fsnu.ac.kr%2F&dt=%EC%84%9C%EC%9A%B8%EB%8C%80%ED%95%99%EA%B5%90&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=5612. Refused to connect because it violates the document's Content Security Policy.

Issues logged to the `Issues` panel in Chrome Devtools indicate unresolved problems. They can come from network request failures, insufficient security controls, and other browser concerns. Open up the Issues panel in Chrome DevTools for more details on each issue.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

These checks ensure that your page is following basic search engine optimization advice. There are many additional factors Lighthouse does not score here that may affect your search ranking, including performance on Core Web Vitals. Learn more about Google Search Essentials.

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

Lighthouse Scores

Industry-standard audits powered by Google Lighthouse. — Desktop

Performance

Accessibility

Best Practices

SEO

Core Web Vitals

Key metrics that affect user experience. — Desktop

First Contentful Paint First Contentful Paint — how long until the browser renders the first piece of content. Under 1.8s is good.

5.35 s

Largest Contentful Paint Largest Contentful Paint — how long until the largest visible element loads. Under 2.5s is good.

10.27 s

Total Blocking Time Total Blocking Time — total time the main thread was blocked, preventing user input. Under 200ms is good.

0 ms

Cumulative Layout Shift Cumulative Layout Shift — measures visual stability. How much the page layout shifts during loading. Under 0.1 is good.

0.000

Speed Index Speed Index — how quickly content is visually displayed during load. Under 3.4s is good.

10.90 s

Time to Interactive Time to Interactive — how long until the page is fully interactive and responds to user input. Under 3.8s is good.

10.63 s

Detailed Report

Audit breakdown by category with detailed findings.

Performance

Insights

Remove large, duplicate JavaScript modules from bundles to reduce unnecessary bytes consumed by network activity.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Why this matters

Shipping ES5 transpiled code to modern browsers wastes bytes — every user with an evergreen browser pays for compatibility you don't need.

Learn more ▾

Source: Google web.dev / Lighthouse

3rd party code can significantly impact load performance. Reduce and defer loading of 3rd party code to prioritize your page's content.

Why this matters

Performance issues directly impact user engagement and conversion rates.

A long cache lifetime can speed up repeat visits to your page. Learn more about caching.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Request	Cache TTL	Transfer Size
/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...	604800.0 s	623.3 KiB
snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png	604800.0 s	490.4 KiB
/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...	604800.0 s	481.4 KiB
snu.ac.kr/_skin/kor/layout/font/noto-serif-kr-v6-latin_korean-regular.woff2	604800.0 s	478.9 KiB
/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...	604800.0 s	476.4 KiB
/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...	604800.0 s	469.4 KiB
snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png	604800.0 s	468.2 KiB
snu.ac.kr/webdata/kor/instanews/2ddzd68z767z535zce8z320z5a4z1a6z46fzde5z6b.png	604800.0 s	466.1 KiB
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	604800.0 s	457.9 KiB
snu.ac.kr/js/jquery-ui-1.10.js	604800.0 s	425.1 KiB
/webdata/boardimages/konews/6a7z4d6zc6ez103zaf0zbd9zb38z9...	604800.0 s	423.7 KiB
snu.ac.kr/webdata/kor/instanews/c5bze68z98ez3fez481zc8ez6f9z296zc1ez8f0zcf.png	604800.0 s	422.5 KiB
/webdata/boardimages/konews/1b6zb2bzab0ze8bz909zedbz21fze...	604800.0 s	367.8 KiB
snu.ac.kr/webdata/kor/instanews/2c0z832zf5fz184ze68z9c6zc28zdffz4c1z485z17.png	604800.0 s	350.6 KiB
snu.ac.kr/webdata/kor/instanews/6faz210zd02z51fza6bzccbz968zb42z3ffz440z99.png	604800.0 s	315.2 KiB
/webdata/boardimages/kohighlight/825zaf1ze52z6d4zb1azd79z...	604800.0 s	258.9 KiB
snu.ac.kr/webdata/kor/instanews/ff3zec8zf37zeecz847zdbbz01ez048z2d4za5bzdf.png	604800.0 s	255.1 KiB
snu.ac.kr/webdata/kor/instanews/1d0z29dz08az482z07fzfa5zb01zce0z63cz138z5d.png	604800.0 s	252.2 KiB
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-700.woff2	604800.0 s	217.9 KiB
/webdata/boardimages/kohighlight/270ze0eza07zb6az3a4z0abz...	604800.0 s	217.6 KiB
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-500.woff2	604800.0 s	212.1 KiB
/webdata/boardimages/konews/adfza67zaaez74cz61ezd06zc45zd...	604800.0 s	211.9 KiB
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-regular.woff2	604800.0 s	209.7 KiB
/webdata/boardimages/kohighlight/fc9zd8dze5czcb6ze4fz312z...	604800.0 s	200.4 KiB
snu.ac.kr/webdata/kor/instanews/89bzb4fzeacz13azfc7z4f9z9d9z8ebz1f6z313zd0.png	604800.0 s	200.1 KiB
/webdata/boardimages/kohighlight/3c2z3dfzfbaz357zd64z17dz...	604800.0 s	189.5 KiB
snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_web.jpg	604800.0 s	165.6 KiB
ssl.pstatic.net/melona/libs/gfp-nac-module/synchronizer.js	1327.0 s	18.2 KiB
snu.ac.kr/webdata/kor/instanews/000z6e6ze1dzd19z3abz09bz00ezd19zcafz104z0e.png	604800.0 s	108.9 KiB
wcs.naver.net/wcslog.js	95.0 s	10.5 KiB
snu.ac.kr/js/jquery.js	604800.0 s	88.0 KiB
/webdata/boardimages/konews/4fbzb94z420zedfz0a7zefcz282z9...	604800.0 s	61.2 KiB
/webdata/boardimages/koevent/44ez3eaz175z6bfzafcz79dz596z...	604800.0 s	46.4 KiB
snu.ac.kr/js/slick.min.js?ver=2026-02-24	604800.0 s	44.4 KiB
snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_mobile.jpg	604800.0 s	39.6 KiB
/webdata/boardimages/koevent/9b9z9b0z59fz60dz687z8b6z38cz...	604800.0 s	38.9 KiB
/webdata/boardimages/koevent/066z86az2c0z82dz480z5eczaf2z...	604800.0 s	37.0 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/03/index-topbanner-text_sm.png	604800.0 s	33.6 KiB
/webdata/boardimages/koevent/8e4ze5cz3e0zca0za34zc91z050z...	604800.0 s	30.0 KiB
snu.ac.kr/webdata/uploads/kor/image/2021/04/if_designaward2021_red_l_rgb.png	604800.0 s	24.9 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-topbanner-symbol_sm.png	604800.0 s	23.7 KiB
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-500.woff2	604800.0 s	17.7 KiB
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-700.woff2	604800.0 s	17.6 KiB
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-regular.woff2	604800.0 s	17.5 KiB
snu.ac.kr/_skin/kor/layout/js/webfont.js	604800.0 s	15.6 KiB
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	604800.0 s	15.5 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/03/index-topbanner-text_lg.png	604800.0 s	14.7 KiB
snu.ac.kr/_skin/kor/layout/css/font.css	604800.0 s	13.8 KiB
snu.ac.kr/_skin/kor/layout/image/footer-wa_sm.png	604800.0 s	12.3 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-topbanner-symbol_lg.png	604800.0 s	11.5 KiB
snu.ac.kr/_skin/kor/layout/image/footer-snunow_lg.png	604800.0 s	9.8 KiB
snu.ac.kr/_skin/kor/layout/image/footer-snunow_sm.png	604800.0 s	8.3 KiB
snu.ac.kr/_skin/kor/layout/image/footer-wa_lg.png	604800.0 s	6.9 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_sm.png	604800.0 s	6.6 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_sm.png	604800.0 s	6.4 KiB
snu.ac.kr/js/zenda-site.js?ver=2026-02-24	604800.0 s	6.4 KiB
snu.ac.kr/_skin/kor/layout/image/footer-facebook_lg.png	604800.0 s	6.2 KiB
snu.ac.kr/_skin/kor/layout/image/footer-snubird_sm.png	604800.0 s	6.1 KiB
snu.ac.kr/_skin/kor/layout/image/icon-sns-insta-32.png	604800.0 s	5.9 KiB
snu.ac.kr/_skin/kor/layout/image/footer-instagram_sm.png	604800.0 s	5.6 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_lg.png	604800.0 s	5.4 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_lg.png	604800.0 s	5.3 KiB
snu.ac.kr/_skin/kor/layout/image/footer-facebook_sm.png	604800.0 s	5.2 KiB
snu.ac.kr/_skin/kor/layout/image/footer-snubird_lg.png	604800.0 s	5.0 KiB
snu.ac.kr/_skin/kor/layout/image/footer-youtube_sm.png	604800.0 s	4.9 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-visual-controller.png	604800.0 s	4.8 KiB
snu.ac.kr/_skin/kor/layout/js/responsive.js?ver=2026-02-24	604800.0 s	4.7 KiB
snu.ac.kr/_skin/kor/layout/image/footer-instagram_lg.png	604800.0 s	4.5 KiB
snu.ac.kr/_skin/kor/layout/image/footer-youtube_lg.png	604800.0 s	4.2 KiB
snu.ac.kr/_skin/kor/layout/js/gnb.js?ver=2026-02-24	604800.0 s	4.1 KiB
snu.ac.kr/_skin/kor/layout/image/icon-videos-arrow_lg.png	604800.0 s	4.0 KiB
snu.ac.kr/_skin/kor/layout/image/header-subgnb-search_sm.png	604800.0 s	3.9 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-professor_lg.png	604800.0 s	3.8 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-slider-play_sm.png	604800.0 s	3.8 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-alumni_lg.png	604800.0 s	3.8 KiB
snu.ac.kr/_skin/kor/layout/image/header-subgnb-search_lg.png	604800.0 s	3.8 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-student_lg.png	604800.0 s	3.7 KiB
snu.ac.kr/_skin/kor/layout/image/header-gnb-d2-close_sm.png	604800.0 s	3.7 KiB
snu.ac.kr/_skin/kor/layout/image/icon-more-arrow-right_sm.png	604800.0 s	3.6 KiB
snu.ac.kr/_skin/kor/layout/image/icon-newwindow_lg.png	604800.0 s	3.6 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-freshman_lg.png	604800.0 s	3.5 KiB
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-slider-stop_sm.png	604800.0 s	3.5 KiB
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-visit_lg.png	604800.0 s	3.5 KiB
snu.ac.kr/js/jquery-migrate-3.0.0.min.js	604800.0 s	2.5 KiB

Consider setting font-display to swap or optional to ensure text is consistently visible. swap can be further optimized to mitigate layout shifts with font metric overrides.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Est Savings
snu.ac.kr/_skin/kor/layout/font/noto-serif-kr-v6-latin_korean-regular.woff2	2.3 s
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-regular.woff2	2.2 s
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-700.woff2	1.3 s
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-500.woff2	995 ms
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-regular.woff2	310 ms
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-500.woff2	300 ms
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-700.woff2	295 ms

Each subpart has specific improvement strategies. Ideally, most of the LCP time should be spent on loading the resources, not within delays.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:label label:Subpart valueType:text] map[key:duration label:Duration valueType:ms]]

items: [map[duration:985.002 label:Time to first byte subpart:timeToFirstByte] map[duration:4335.29 label:Resource load delay subpart:resourceLoadDelay] map[duration:0 label:Resource load duration subpart:resourceLoadDuration] map[duration:8880.117 label:Element render delay subpart:elementRenderDelay]]

lhId: page-0-VIDEO

nodeLabel: div.slide > div.slide-bg > div.bg > video#banner-video00

path: 1,HTML,1,BODY,8,MAIN,1,DIV,4,SECTION,5,DIV,1,DIV,3,DIV,1,DIV,1,VIDEO

selector: div.slide > div.slide-bg > div.bg > video#banner-video00

snippet: <video id="banner-video00" playsinline="" muted="" autoplay="" loop="">

Optimize LCP by making the LCP image discoverable from the HTML immediately, and avoiding lazy-loading

Why this matters

Performance issues directly impact user engagement and conversion rates.

lhId: page-0-VIDEO

nodeLabel: div.slide > div.slide-bg > div.bg > video#banner-video00

path: 1,HTML,1,BODY,8,MAIN,1,DIV,4,SECTION,5,DIV,1,DIV,3,DIV,1,DIV,1,VIDEO

selector: div.slide > div.slide-bg > div.bg > video#banner-video00

snippet: <video id="banner-video00" playsinline="" muted="" autoplay="" loop="">

HTTP/2 and HTTP/3 offer many benefits over HTTP/1.1, such as multiplexing. Learn more about using modern HTTP.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Protocol
snu.ac.kr/	http/1.1
snu.ac.kr/_skin/kor/layout/js/webfont.js	http/1.1
snu.ac.kr/js/jquery.js	http/1.1
snu.ac.kr/js/jquery-migrate-3.0.0.min.js	http/1.1
snu.ac.kr/js/jquery-ui-1.10.js	http/1.1
snu.ac.kr/js/slick.min.js?ver=2026-02-24	http/1.1
snu.ac.kr/js/zenda-site.js?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/js/gnb.js?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/js/responsive.js?ver=2026-02-24	http/1.1
snu.ac.kr/_skin/kor/layout/image/header-subgnb-search_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/css/font.css	http/1.1
snu.ac.kr/_skin/kor/layout/image/header-subgnb-search_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/header-gnb-d2-close_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-topbanner-symbol_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-topbanner-symbol_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/03/index-topbanner-text_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/03/index-topbanner-text_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-slider-stop_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-slider-play_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/media/2026/02/80emblem_main.svg	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_lg.png	http/1.1
/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...	http/1.1
/webdata/boardimages/kohighlight/fc9zd8dze5czcb6ze4fz312z...	http/1.1
/webdata/boardimages/konews/adfza67zaaez74cz61ezd06zc45zd...	http/1.1
/webdata/boardimages/konews/4fbzb94z420zedfz0a7zefcz282z9...	http/1.1
/webdata/boardimages/konews/6a7z4d6zc6ez103zaf0zbd9zb38z9...	http/1.1
/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...	http/1.1
/webdata/boardimages/kohighlight/3c2z3dfzfbaz357zd64z17dz...	http/1.1
/webdata/boardimages/kohighlight/825zaf1ze52z6d4zb1azd79z...	http/1.1
/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...	http/1.1
/webdata/boardimages/kohighlight/270ze0eza07zb6az3a4z0abz...	http/1.1
/webdata/boardimages/konews/1b6zb2bzab0ze8bz909zedbz21fze...	http/1.1
/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...	http/1.1
snu.ac.kr/webdata/kor/instanews/c5bze68z98ez3fez481zc8ez6f9z296zc1ez8f0zcf.png	http/1.1
snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png	http/1.1
snu.ac.kr/webdata/kor/instanews/1d0z29dz08az482z07fzfa5zb01zce0z63cz138z5d.png	http/1.1
snu.ac.kr/webdata/kor/instanews/2ddzd68z767z535zce8z320z5a4z1a6z46fzde5z6b.png	http/1.1
snu.ac.kr/webdata/kor/instanews/2c0z832zf5fz184ze68z9c6zc28zdffz4c1z485z17.png	http/1.1
snu.ac.kr/webdata/kor/instanews/6faz210zd02z51fza6bzccbz968zb42z3ffz440z99.png	http/1.1
snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png	http/1.1
snu.ac.kr/webdata/kor/instanews/ff3zec8zf37zeecz847zdbbz01ez048z2d4za5bzdf.png	http/1.1
snu.ac.kr/webdata/kor/instanews/89bzb4fzeacz13azfc7z4f9z9d9z8ebz1f6z313zd0.png	http/1.1
snu.ac.kr/webdata/kor/instanews/000z6e6ze1dzd19z3abz09bz00ezd19zcafz104z0e.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_mobile.jpg	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_web.jpg	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-snunow_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-snunow_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-snubird_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-snubird_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-facebook_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-facebook_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-youtube_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-youtube_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-instagram_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-instagram_sm.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2021/04/if_designaward2021_red_l_rgb.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-wa_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/footer-wa_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-regular.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/font/noto-serif-kr-v6-latin_korean-regular.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-regular.woff2	http/1.1
snu.ac.kr/webdata/uploads/kor/media/2020/02/01_gate.mp4	http/1.1
snu.ac.kr/webdata/uploads/kor/media/2020/02/03_library.mp4	http/1.1
snu.ac.kr/webdata/uploads/kor/media/2023/03/movie_20230302_kor.mp4	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-visit_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-freshman_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-professor_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-alumni_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2019/12/header-visitgnb-student_lg.png	http/1.1
snu.ac.kr/webdata/uploads/kor/image/2020/02/index-visual-controller.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/icon-newwindow_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/image/icon-sns-insta-32.png	http/1.1
/webdata/boardimages/koevent/066z86az2c0z82dz480z5eczaf2z...	http/1.1
/webdata/boardimages/koevent/9b9z9b0z59fz60dz687z8b6z38cz...	http/1.1
/webdata/boardimages/koevent/8e4ze5cz3e0zca0za34zc91z050z...	http/1.1
/webdata/boardimages/koevent/44ez3eaz175z6bfzafcz79dz596z...	http/1.1
snu.ac.kr/_skin/kor/layout/image/icon-more-arrow-right_sm.png	http/1.1
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-700.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/font/roboto-v18-latin-500.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/image/icon-videos-arrow_lg.png	http/1.1
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-700.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/font/noto-sans-kr-v8-korean-500.woff2	http/1.1
snu.ac.kr/_skin/kor/layout/ico/favicon.ico	http/1.1

Avoid chaining critical requests by reducing the length of chains, reducing the download size of resources, or deferring the download of unnecessary resources to improve page load.

Why this matters

Performance issues directly impact user engagement and conversion rates.

title: Preconnected origins

value: no origins were preconnected

description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.

title: Preconnect candidates

Requests are blocking the page's initial render, which may delay LCP. Deferring or inlining can move these network requests out of the critical path.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size	Duration
snu.ac.kr/js/jquery-ui-1.10.js	425.1 KiB	2.9 s
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	457.9 KiB	2.6 s
snu.ac.kr/_skin/kor/layout/js/responsive.js?ver=2026-02-24	4.7 KiB	993 ms
snu.ac.kr/js/slick.min.js?ver=2026-02-24	44.4 KiB	1.6 s
snu.ac.kr/_skin/kor/layout/js/gnb.js?ver=2026-02-24	4.1 KiB	993 ms
snu.ac.kr/js/zenda-site.js?ver=2026-02-24	6.4 KiB	993 ms
snu.ac.kr/js/jquery.js	88.0 KiB	1.6 s
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	15.5 KiB	1.3 s
snu.ac.kr/js/jquery-migrate-3.0.0.min.js	2.5 KiB	993 ms
snu.ac.kr/_skin/kor/layout/js/webfont.js	15.6 KiB	1.3 s

Your first network request is the most important. Reduce its latency by avoiding redirects, ensuring a fast server response, and enabling text compression.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Reducing the download time of images can improve the perceived load time of the page and LCP. Learn more about optimizing image size

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL	Resource Size	Est Savings
[샤로잡다 시즌2] 나노기술로 질병도 정복할 수 있을까? `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...	621.0 KiB	610.4 KiB
yellow yellow yellow `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png	488.1 KiB	469.5 KiB
[샤로잡다 시즌2] 극락도 락이다, 힙불교 제대로 알아보기 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...	479.0 KiB	468.5 KiB
‘도서관 속 작은 펼침, 세상을 여는 큰 열림’, 2026 도서관의 날 도서관 주간 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...	474.1 KiB	463.5 KiB
경계 없는 지식의 확산, 서울대학교 공식 유튜브 20만 구독자 돌파 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...	467.1 KiB	456.5 KiB
눈부신 봄날의 캠퍼스 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png	465.9 KiB	447.3 KiB
제66주년 4·19혁명 희생자 추모 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/2ddzd68z767z535zce8z320z5a4z1a6z46fzde5z6b.png	463.7 KiB	445.1 KiB
여자핸드볼부, 제81회 전국종별핸드볼선수권대회 전승 우승 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/6a7z4d6zc6ez103zaf0zbd9zb38z9...	421.4 KiB	410.8 KiB
서울대생을 위한 벚꽃 맛 스티커 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/c5bze68z98ez3fez481zc8ez6f9z296zc1ez8f0zcf.png	420.2 KiB	401.6 KiB
AI 네이티브 캠퍼스로의 도약, 서울대학교 AI Summit 2026 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/1b6zb2bzab0ze8bz909zedbz21fze...	365.4 KiB	354.9 KiB
중간고사 A+ 맞는 주파수 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/2c0z832zf5fz184ze68z9c6zc28zdffz4c1z485z17.png	348.3 KiB	329.7 KiB
Full Blossom at SNU `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/6faz210zd02z51fza6bzccbz968zb42z3ffz440z99.png	312.8 KiB	294.2 KiB
고유전체로 밝힌 삼국시대 지역 사회에서의 친족 네트워크와 족내혼 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/825zaf1ze52z6d4zb1azd79z...	256.6 KiB	249.6 KiB
26학번 새내기 앙케이트 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/ff3zec8zf37zeecz847zdbbz01ez048z2d4za5bzdf.png	252.8 KiB	234.2 KiB
Flower Walk at SNU `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/1d0z29dz08az482z07fzfa5zb01zce0z63cz138z5d.png	249.9 KiB	231.3 KiB
고형암 치료의 난제 ‘항원탈락’을 극복하는 차세대 CAR-NK 플랫폼 개발 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/270ze0eza07zb6az3a4z0abz...	215.2 KiB	208.2 KiB
장애인과 함께 살아가는 세상을 위해, 공익법률센터 세미나 ‘공공정책의 수단으로서의 장애인권리협약’ `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/adfza67zaaez74cz61ezd06zc45zd...	209.5 KiB	199.0 KiB
새로 제2형 당뇨병을 진단받은 남성 흡연자, 금연 후 ‘체중 유지’가 골절 위험 낮춘다 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/fc9zd8dze5czcb6ze4fz312z...	198.1 KiB	191.1 KiB
“몸 안 좋을 때 술 마시면 왜 더 위험할까?” 염증 상황에서의 알코올성 간 손상 기전 규명 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/3c2z3dfzfbaz357zd64z17dz...	187.1 KiB	180.1 KiB
교수님! 출연해주세요! `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/89bzb4fzeacz13azfc7z4f9z9d9z8ebz1f6z313zd0.png	197.8 KiB	179.2 KiB
샤인기부, 당신이 만드는 빛나는 변화, 샤인 굿즈 받기 `div#skip-content > div.ly-container > a.inner > img.only-desktop`	snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_web.jpg	163.3 KiB	153.8 KiB
샤대타로 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/000z6e6ze1dzd19z3abz09bz00ezd19zcafz104z0e.png	106.6 KiB	88.0 KiB
무한한 상상, 담대한 도전, 새로운 미래… 개교 80주년 기념 표어·엠블럼 공개 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/4fbzb94z420zedfz0a7zefcz282z9...	58.9 KiB	48.3 KiB
제2회 중앙도서관 연구자 커리어 멘토링 특강 개최 `div.ly-inner > div.board-index-img2 > a.item > span.thumb`	/webdata/boardimages/koevent/44ez3eaz175z6bfzafcz79dz596z...	44.1 KiB	34.3 KiB
[해피아워]SNU OGA_HAPPY HOUR(2026-04-23, Thu, 16:00 ~ 17:00) Invitation(2026 Spring) `div.ly-inner > div.board-index-img2 > a.item > span.thumb`	/webdata/boardimages/koevent/9b9z9b0z59fz60dz687z8b6z38cz...	36.6 KiB	26.9 KiB
[Asia and the World]Youth, Creativity, and Cultural Power(4/23) ([아시아와 세계] 청년, … `div.ly-inner > div.board-index-img2 > a.item > span.thumb`	/webdata/boardimages/koevent/066z86az2c0z82dz480z5eczaf2z...	34.7 KiB	24.9 KiB
iF Design Award `ul.information-info-acc > li > a > img.web-accessibility-mark`	snu.ac.kr/webdata/uploads/kor/image/2021/04/if_designaward2021_red_l_rgb.png	22.6 KiB	22.4 KiB
[경력개발센터]동문선배특강-CJ올리브영 현직자 특강 참여자 모집(~4/23) `div.ly-inner > div.board-index-img2 > a.item > span.thumb`	/webdata/boardimages/koevent/8e4ze5cz3e0zca0za34zc91z050z...	27.7 KiB	18.0 KiB
SNUNOW `ul.social-ul > li > a > img.only-desktop`	snu.ac.kr/_skin/kor/layout/image/footer-snunow_lg.png	7.3 KiB	7.1 KiB

These insights are also available in the Chrome DevTools Performance Panel - record a trace to view more detailed information.

Time to Interactive is the amount of time it takes for the page to become fully interactive. Learn more about the Time to Interactive metric.

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Minifying CSS files can reduce network payload sizes. Learn how to minify CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 330 ms 59.7 KiB

URL	Transfer Size	Est Savings
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	457.9 KiB	57.5 KiB
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	15.5 KiB	2.2 KiB

Reduce unused rules from stylesheets and defer CSS not used for above-the-fold content to decrease bytes consumed by network activity. Learn how to reduce unused CSS.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 330 ms 456.6 KiB

URL	Transfer Size	Est Savings
snu.ac.kr/_skin/kor/layout/css/base.css?ver=2026-02-24	455.3 KiB	432.4 KiB
snu.ac.kr/_skin/kor/layout/css/oldboard.css?ver=2026-02-24	12.9 KiB	12.9 KiB
snu.ac.kr/_skin/kor/layout/css/font.css	11.2 KiB	11.2 KiB

Reduce unused JavaScript and defer loading scripts until they are required to decrease bytes consumed by network activity. Learn how to reduce unused JavaScript.

Why this matters

Multi-megabyte JavaScript bundles delay every interactive feature on the page.

Learn more ▾

Source: Google web.dev / Lighthouse

Estimated savings: 330 ms 467.8 KiB

URL	Transfer Size	Est Savings
snu.ac.kr/js/jquery-ui-1.10.js	422.5 KiB	369.6 KiB
www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3	153.0 KiB	63.6 KiB
snu.ac.kr/js/jquery.js	85.5 KiB	34.6 KiB

Many navigations are performed by going back to a previous page, or forwards again. The back/forward cache (bfcache) can speed up these return navigations. Learn more about the bfcache

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failure reason	Failure type
Pages with cache-control:no-store header cannot enter back/forward cache.	Actionable

Minifying JavaScript files can reduce payload sizes and script parse time. Learn how to minify JavaScript.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 145.4 KiB

URL	Transfer Size	Est Savings
snu.ac.kr/js/jquery-ui-1.10.js	422.5 KiB	141.8 KiB
inline: $(function() { /…	10.0 KiB	3.6 KiB

Large network payloads cost users real money and are highly correlated with long load times. Learn how to reduce payload sizes.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL	Transfer Size
snu.ac.kr/webdata/uploads/kor/media/2020/02/01_gate.mp4	7.8 MiB
snu.ac.kr/webdata/uploads/kor/media/2023/03/movie_20230302_kor.mp4	5.5 MiB
snu.ac.kr/webdata/uploads/kor/media/2020/02/03_library.mp4	1.2 MiB
/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...	623.3 KiB
snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png	490.4 KiB
/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...	481.4 KiB
snu.ac.kr/_skin/kor/layout/font/noto-serif-kr-v6-latin_korean-regular.woff2	478.9 KiB
/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...	476.4 KiB
/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...	469.4 KiB
snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png	468.2 KiB

Set an explicit width and height on image elements to reduce layout shifts and improve CLS. Learn how to set image dimensions

Why this matters

Performance issues directly impact user engagement and conversion rates.

	URL
샤인기부, 당신이 만드는 빛나는 변화, 샤인 굿즈 받기 `div#skip-content > div.ly-container > a.inner > img.only-desktop`	snu.ac.kr/webdata/uploads/kor/image/2025/04/main_banner_20250429_web.jpg
iF Design Award `ul.information-info-acc > li > a > img.web-accessibility-mark`	snu.ac.kr/webdata/uploads/kor/image/2021/04/if_designaward2021_red_l_rgb.png
‘도서관 속 작은 펼침, 세상을 여는 큰 열림’, 2026 도서관의 날 도서관 주간 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/4fcz6a6zdddz683zb40z8aeza34z7...
장애인과 함께 살아가는 세상을 위해, 공익법률센터 세미나 ‘공공정책의 수단으로서의 장애인권리협약’ `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/adfza67zaaez74cz61ezd06zc45zd...
무한한 상상, 담대한 도전, 새로운 미래… 개교 80주년 기념 표어·엠블럼 공개 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/4fbzb94z420zedfz0a7zefcz282z9...
여자핸드볼부, 제81회 전국종별핸드볼선수권대회 전승 우승 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/6a7z4d6zc6ez103zaf0zbd9zb38z9...
[샤로잡다 시즌2] 극락도 락이다, 힙불교 제대로 알아보기 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/9d2z6a7zaf9z00bzfd6z945z410z9...
경계 없는 지식의 확산, 서울대학교 공식 유튜브 20만 구독자 돌파 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/c94z5d8z835zddez31bz6e4z055zd...
AI 네이티브 캠퍼스로의 도약, 서울대학교 AI Summit 2026 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/1b6zb2bzab0ze8bz909zedbz21fze...
[샤로잡다 시즌2] 나노기술로 질병도 정복할 수 있을까? `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/konews/89bzee0z6faz094za88ze30z7e6z6...
서울대생을 위한 벚꽃 맛 스티커 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/c5bze68z98ez3fez481zc8ez6f9z296zc1ez8f0zcf.png
yellow yellow yellow `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/fccz595zc59zc4az988ze6bz1fdzf8fz64ez485zcf.png
Flower Walk at SNU `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/1d0z29dz08az482z07fzfa5zb01zce0z63cz138z5d.png
제66주년 4·19혁명 희생자 추모 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/2ddzd68z767z535zce8z320z5a4z1a6z46fzde5z6b.png
중간고사 A+ 맞는 주파수 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/2c0z832zf5fz184ze68z9c6zc28zdffz4c1z485z17.png
Full Blossom at SNU `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/6faz210zd02z51fza6bzccbz968zb42z3ffz440z99.png
눈부신 봄날의 캠퍼스 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/f5bz07dzec1z95az0dfzae1zc47z43az372z180zec.png
26학번 새내기 앙케이트 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/ff3zec8zf37zeecz847zdbbz01ez048z2d4za5bzdf.png
교수님! 출연해주세요! `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/89bzb4fzeacz13azfc7z4f9z9d9z8ebz1f6z313zd0.png
샤대타로 `li.slick-slide > a > div.caption-item > img`	snu.ac.kr/webdata/kor/instanews/000z6e6ze1dzd19z3abz09bz00ezd19zcafz104z0e.png
새로 제2형 당뇨병을 진단받은 남성 흡연자, 금연 후 ‘체중 유지’가 골절 위험 낮춘다 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/fc9zd8dze5czcb6ze4fz312z...
“몸 안 좋을 때 술 마시면 왜 더 위험할까?” 염증 상황에서의 알코올성 간 손상 기전 규명 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/3c2z3dfzfbaz357zd64z17dz...
고유전체로 밝힌 삼국시대 지역 사회에서의 친족 네트워크와 족내혼 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/825zaf1ze52z6d4zb1azd79z...
고형암 치료의 난제 ‘항원탈락’을 극복하는 차세대 CAR-NK 플랫폼 개발 `div.board-index-img1 > a.item > span.thumb > img`	/webdata/boardimages/kohighlight/270ze0eza07zb6az3a4z0abz...
80주년 엠블럼 `div.nonslider > div.slide > div.slider-copy > img.symbol`	snu.ac.kr/webdata/uploads/kor/media/2026/02/80emblem_main.svg
지금 서울대학교에서는 `div.common-boardtitle > div.bg-wrap > h2.title > img.only-desktop`	snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board01-title_lg.png
서울대학교 캘린더 `div.common-boardtitle > div.bg-wrap > p.title > img.only-desktop`	snu.ac.kr/webdata/uploads/kor/image/2019/12/index-board02-title_lg.png
과학기술정보통신부 WEB ACCESSIBILITY 마크(웹 접근성 품질인증 마크) `div.information-footer-inner > ul.information-info-acc > li > img.only-desktop`	snu.ac.kr/_skin/kor/layout/image/footer-wa_lg.png
SNUNOW `ul.social-ul > li > a > img.only-desktop`	snu.ac.kr/_skin/kor/layout/image/footer-snunow_lg.png
인스타그램 `ul.social-ul > li > a > img.only-desktop`	snu.ac.kr/_skin/kor/layout/image/footer-instagram_lg.png
스누새편지 `ul.social-ul > li > a > img.only-desktop`	snu.ac.kr/_skin/kor/layout/image/footer-snubird_lg.png
페이스북 `ul.social-ul > li > a > img.only-desktop`	snu.ac.kr/_skin/kor/layout/image/footer-facebook_lg.png
유튜브 `ul.social-ul > li > a > img.only-desktop`	snu.ac.kr/_skin/kor/layout/image/footer-youtube_lg.png

More information about the performance of your application. These numbers don't directly affect the Performance score.

●Layout shift culprits

●Optimize DOM size

●Forced reflow

●Optimize viewport for mobile

●Max Potential First Input Delay 30 ms

●User Timing marks and measures 5 user timings

●JavaScript execution time 0.1 s

●Minimizes main-thread work 0.8 s

●Avoid non-composited animations 10 animated elements found

●Network Requests

●Network Round Trip Times 290 ms

●Server Backend Latencies 20 ms

●Tasks

●Diagnostics

●Metrics

●Screenshot Thumbnails

●Final Screenshot

●Script Treemap Data

●Resources Summary

●Avoid multiple page redirects

●Initial server response time was short Root document took 400 ms

●Avoid large layout shifts 2 layout shifts found

○INP breakdown

○Avoid long main-thread tasks

Accessibility

ARIA

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
인스타그램 중간고사 A+ 맞는 주파수 여러분의 중간고사 대박을 응원합니다! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 Full Blossom at SNU 완연히 만개한 서울대학교 봄 풍경 `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 눈부신 봄날의 캠퍼스 눈부시게 빛나는 봄날의 캠퍼스 풍경 `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 26학번 새내기 앙케이트 26학번 새내기에게 묻는다! 서울대학교 입학 후 가장 하고싶었던 일은?! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 교수님! 출연해주세요! 교수님! 〈샤로잡다〉에 추천해주세요! 학생들이 직접 추천한 교수님들?! 누가 있을까요~? `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 샤대타로 여러분의 1학기 운세, 지금 샤대타로에서 확인해보세요! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`

These are opportunities to improve the usage of ARIA in your application which may enhance the experience for users of assistive technology, like a screen reader.

Contrast

Low-contrast text is difficult or impossible for many users to read. Learn how to provide sufficient color contrast.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
08826 서울시 관악구 관악로 1 서울대학교 `div.information-info > div.information-info-area > div.area-address > span`
TEL. (02) 880-5114 `div.information-info > div.information-info-area > div.area-address > span`
(02) 880-5114 `div.information-info-area > div.area-address > span > a.tel`
FAX. (02) 885-5272 `div.information-info > div.information-info-area > div.area-address > span`
Copyright 2026 Seoul National University All Rights Reserved. `div.information-info > div.information-info-area > div.area-copy > p`

These are opportunities to improve the legibility of your content.

Tables and lists

Screen readers have a specific way of announcing lists. Ensuring proper list structure aids screen reader output. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
이전 인스타그램 서울대생을 위한 벚꽃 맛 스티커 서울대생을 위한 벚꽃 맛 스티커 등장! 인스타그램 yellow yellow yellow … `main.ly-main > div#skip-content > section.ly-section > ul.instaslide`

Screen readers require list items (`<li>`) to be contained within a parent `<ul>`, `<ol>` or `<menu>` to be announced properly. Learn more about proper list structure.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
인스타그램 서울대생을 위한 벚꽃 맛 스티커 서울대생을 위한 벚꽃 맛 스티커 등장! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 yellow yellow yellow 캠퍼스는 지금 노랑노랑노랑! `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 Flower Walk at SNU 꽃으로 만개한 봄날의 캠퍼스, 함께 걸을까요? `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`
인스타그램 제66주년 4·19혁명 희생자 추모 제66주년 4·19 혁명 희생자 추모행사가 금일 오전, 서울대학교 4·19 혁명 희생자 추모공… `ul.instaslide > div.slick-list > div.slick-track > li.slick-slide`

These are opportunities to improve the experience of reading tabular or list data using assistive technology, like a screen reader.

Best practices

Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. Learn more about the viewport meta tag.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
head > meta `head > meta`

These items highlight common accessibility best practices.

○Interactive controls are keyboard focusable

○Interactive elements indicate their purpose and state

○The page has a logical tab order

○Visual order on the page follows DOM order

○User focus is not accidentally trapped in a region

○The user's focus is directed to new content added to the page

○HTML5 landmark elements are used to improve navigation

○Offscreen content is hidden from assistive technology

○Custom controls have associated labels

○Custom controls have ARIA roles

●`[aria-*]` attributes match their roles

●`[aria-hidden="true"]` is not present on the document `<body>`

●`[role]`s have all required `[aria-*]` attributes

●`[role]` values are valid

●`[aria-*]` attributes have valid values

●`[aria-*]` attributes are valid and not misspelled

●Buttons have an accessible name

●Image elements have `[alt]` attributes

●ARIA attributes are used as specified for the element's role

●Elements use only permitted ARIA attributes

●Document has a `<title>` element

●`<html>` element has a `[lang]` attribute

●`<html>` element has a valid value for its `[lang]` attribute

●Links are distinguishable without relying on color.

●Links have a discernible name

●Touch targets have sufficient size and spacing.

●Heading elements appear in a sequentially-descending order

●Skip links are focusable.

●Document has a main landmark.

●Deprecated ARIA roles were not used

●`<video>` elements contain a `<track>` element with `[kind="captions"]`

○`[accesskey]` values are unique

○`button`, `link`, and `menuitem` elements have accessible names

○Elements with `role="dialog"` or `role="alertdialog"` have accessible names.

○ARIA input fields have accessible names

○ARIA `meter` elements have accessible names

○ARIA `progressbar` elements have accessible names

○Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.

○`[role]`s are contained by their required parent element

○Elements with the `role=text` attribute do not have focusable descendents.

○ARIA toggle fields have accessible names

○ARIA `tooltip` elements have accessible names

○ARIA `treeitem` elements have accessible names

○The page contains a heading, skip link, or landmark region

○`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.

○Definition list items are wrapped in `<dl>` elements

○ARIA IDs are unique

○No form fields have multiple labels

○`<frame>` or `<iframe>` elements have a title

○`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.

○Input buttons have discernible text.

○`<input type="image">` elements have `[alt]` text

○Form elements have associated labels

○The document does not use `<meta http-equiv="refresh">`

○`<object>` elements have alternate text

○Select elements have associated label elements.

○No element has a `[tabindex]` value greater than 0

○Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.

○`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.

○`[lang]` attributes have a valid value

○Tables have different content in the summary attribute and `<caption>`.

○All heading elements contain content.

○Uses ARIA roles only on compatible elements

○Image elements do not have `[alt]` attributes that are redundant text.

○Identical links have the same purpose.

○Elements with visible text labels have matching accessible names.

○Tables use `<caption>` instead of cells with the `[colspan]` attribute to indicate a caption.

○`<td>` elements in a large `<table>` have one or more table headers.

Best Practices

General

Errors logged to the console indicate unresolved problems. They can come from network request failures and other browser concerns. Learn more about this errors in console diagnostic audit

Why this matters

Performance issues directly impact user engagement and conversion rates.

Source Description

Source	Description
www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3 line 222, col 390	Connecting to 'https://region1.google-analytics.com/g/collect?v=2&tid=G-GX37CPT7T3&gtm=45je64k0v884708608za200zd884708608&_p=1776893191739&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1463655867.1776893192&frm=0&pscdl=noapi&rcb=6&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938468~117266400~117512543~118128922&sid=1776893191&sct=1&seg=0&dl=https%3A%2F%2Fsnu.ac.kr%2F&dt=%EC%84%9C%EC%9A%B8%EB%8C%80%ED%95%99%EA%B5%90&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=5552' violates the following Content Security Policy directive: "default-src 'self' https://www.snu.ac.kr https://en.snu.ac.kr https://admission.snu.ac.kr https://identity.snu.ac.kr https://adminservice.snu.ac.kr https://www.google-analytics.com https://nam.veta.naver.com https://wcs.naver.com https://www.google-analytics.com". Note that 'connect-src' was not explicitly set, so 'default-src' is used as a fallback. The action has been blocked.
www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3 line 222, col 390	Fetch API cannot load https://region1.google-analytics.com/g/collect?v=2&tid=G-GX37CPT7T3&gtm=45je64k0v884708608za200zd884708608&_p=1776893191739&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1463655867.1776893192&frm=0&pscdl=noapi&rcb=6&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938468~117266400~117512543~118128922&sid=1776893191&sct=1&seg=0&dl=https%3A%2F%2Fsnu.ac.kr%2F&dt=%EC%84%9C%EC%9A%B8%EB%8C%80%ED%95%99%EA%B5%90&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=5552. Refused to connect because it violates the document's Content Security Policy.

www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3 line 222, col 390

Connecting to 'https://region1.google-analytics.com/g/collect?v=2&tid=G-GX37CPT7T3&gtm=45je64k0v884708608za200zd884708608&_p=1776893191739&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1463655867.1776893192&frm=0&pscdl=noapi&rcb=6&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938468~117266400~117512543~118128922&sid=1776893191&sct=1&seg=0&dl=https%3A%2F%2Fsnu.ac.kr%2F&dt=%EC%84%9C%EC%9A%B8%EB%8C%80%ED%95%99%EA%B5%90&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=5552' violates the following Content Security Policy directive: "default-src 'self' https://www.snu.ac.kr https://en.snu.ac.kr https://admission.snu.ac.kr https://identity.snu.ac.kr https://adminservice.snu.ac.kr https://www.google-analytics.com https://nam.veta.naver.com https://wcs.naver.com https://www.google-analytics.com". Note that 'connect-src' was not explicitly set, so 'default-src' is used as a fallback. The action has been blocked.

www.googletagmanager.com/gtag/js?id=G-GX37CPT7T3 line 222, col 390

Fetch API cannot load https://region1.google-analytics.com/g/collect?v=2&tid=G-GX37CPT7T3&gtm=45je64k0v884708608za200zd884708608&_p=1776893191739&gcd=13l3l3l2l1l1&npa=1&dma_cps=a&dma=1&are=1&cid=1463655867.1776893192&frm=0&pscdl=noapi&rcb=6&sr=800x600&uaa=x86&uab=64&uafvl=Chromium%3B147.0.7727.101%7CNot.A%252FBrand%3B8.0.0.0&uam=&uamb=0&uap=macOS&uapv=10.15.7&uaw=0&ul=en-us&_s=1&tag_exp=0~115616985~115938465~115938468~117266400~117512543~118128922&sid=1776893191&sct=1&seg=0&dl=https%3A%2F%2Fsnu.ac.kr%2F&dt=%EC%84%9C%EC%9A%B8%EB%8C%80%ED%95%99%EA%B5%90&en=page_view&_fv=1&_nsi=1&_ss=1&_ee=1&tfd=5552. Refused to connect because it violates the document's Content Security Policy.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Issue type
Content security policy

●Uses HTTPS

●Avoids deprecated APIs

●Avoids third-party cookies

●Allows users to paste into input fields

●Avoids requesting the geolocation permission on page load

●Avoids requesting the notification permission on page load

●Displays images with correct aspect ratio

●Serves images with appropriate resolution

●Page has the HTML doctype

●Properly defines charset

●Ensure CSP is effective against XSS attacks

●Use a strong HSTS policy

●Ensure proper origin isolation with COOP

●Mitigate DOM-based XSS with Trusted Types

●Detected JavaScript libraries

●Page has valid source maps

○Redirects HTTP traffic to HTTPS

○Mitigate clickjacking with XFO or CSP

SEO

Content Best Practices

Meta descriptions may be included in search results to concisely summarize page content. Learn more about the meta description.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Format your HTML in a way that enables crawlers to better understand your app’s content.

○Structured data is valid

●Page isn’t blocked from indexing

●Document has a `<title>` element

●Page has successful HTTP status code

●Links have descriptive text

●Links are crawlable

●robots.txt is valid

●Image elements have `[alt]` attributes

●Document has a valid `hreflang`

●Document has a valid `rel=canonical`

Results for https://snu.ac.kr

Site Health

How you compare

Top Priorities (5)

Fix Priority Matrix

Quick Wins

Strategic

Easy Improvements

Deprioritize

What fixing these means

Conversion Barriers

Speed (1)

Trust (1)

Usability (2)

Navigation (2)

Return on Investment

Investment

Monthly returns

Regulatory risk avoided

Estimated Remediation Cost

Cost by category

Cost by effort level

What Inaction Is Costing You

Compliance Risk

Bandwidth Waste

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

ARIA

Contrast

Tables and lists

Best practices

Best Practices

General

SEO

Content Best Practices

Lighthouse Scores

Core Web Vitals

Detailed Report

Performance

Insights

Diagnostics

Accessibility

ARIA

Contrast

Tables and lists

Best practices

Best Practices

General

SEO

Content Best Practices

Keyboard Shortcuts