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Results for https://www.ne.jp

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JP · JPY (¥) · Estimated Applicable regulations: APPI Dev cost: ¥8,000/hr How jurisdiction is detected
Spain Spain · Madrid Completed: Apr 22, 2026 23:06 UTC
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Mobile 375 × 812

Screenshot of the audited page (Mobile 375×812)

Desktop 1440 × 900

Screenshot of the audited page (Desktop 1440×900)
D68

Site Health

Score: 68 / 100

Based on 8 categories, 0 sections

Room to improve — your 4.0s load time is above Google's 2.5s 'Good' threshold.

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.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Good content signals with minor gaps.

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 · 1488 peers
You 68
·
Avg 72
At average
0 50 100
Better than 5% of core-js sites See full core-js benchmark →
Facebook SDK · 612 peers
You 68
·
Avg 71
At average
0 50 100
Better than 3% of Facebook SDK sites See full Facebook SDK benchmark →

Top Priorities (5)

1

Content-Security-Policy header is missing

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

Security › Security Headers
2

HSTS header is missing

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

Security › Security Headers
3

No Content-Security-Policy header found

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

Security › Content Security Policy
4

Page weighs 10.4 MB (5.1 MB transferred)

Performance issues directly impact user engagement and conversion rates.

Performance › Page Weight Budget
5

is missing width/height — may cause layout shift

Performance issues directly impact user engagement and conversion rates.

Performance › Image Optimization
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

3

High impact, low effort — start here.

Strategic

2

High impact, requires investment.

Easy Improvements

0

Small gains, minimal effort.

Nothing in this quadrant — good news.

Deprioritize

0

Low impact, high effort — do last.

Nothing in this quadrant — good news.

← Low effort High effort →
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<a href="https://beavercheck.com/results/5a06c39a-e895-4f6a-904d-73bc9ee4083b"><img src="https://beavercheck.com/badge?url=https%3A%2F%2Fwww.ne.jp" alt="BeaverCheck Score"></a>
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What fixing these means

Your site has several issues that may be affecting user experience and business outcomes. Your LCP of 4.0s exceeds Google's 2.5s 'Good' threshold and the 2 performance issues below directly contribute to it. The 3 security gaps leave your users exposed — modern browsers increasingly warn visitors about insecure sites. Addressing the critical issues below would have the most immediate impact on your user trust.

3 security gaps detected — browsers may warn visitors about your site.
Your LCP is 4.0s — fixing the 2 performance criticals could bring it under Google's 2.5s 'Good' threshold.
C
Could reach Estimate based on resolving critical issues

Conversion Barriers

3 critical 6 warning

9 barrier(s) likely increasing bounce by ~33%.

Speed (2)

Page takes 4.0s to load

+12% bounce

Users abandon at ~3s — you're 1.5s over the 2.5s threshold

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

Page feels frozen for 2.4s

+5% bounce

Clicks on the primary CTA are ignored while JavaScript runs

Fix: Break up long tasks; defer non-critical JavaScript to post-hydration

Trust (2)

No HSTS header

+1% bounce

Returning visitors are briefly exposed to downgrade attacks on first request

Fix: Set Strict-Transport-Security: max-age=31536000; includeSubDomains

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 (1)

Layout shifts during page load

+3% bounce

Content movement causes mis-clicks on CTAs and form fields

Fix: Add width/height to images; reserve space for late-loading embeds

Content (2)

No structured data

+2% bounce

No rich-result eligibility in Google — lower SERP CTR vs competitors with stars and prices

Fix: Add JSON-LD for your page type (Product, Article, FAQPage, LocalBusiness, …)

Content is hard to read

+2% bounce

Graduate-level reading difficulty — limits the addressable audience for product or blog pages

Fix: Shorten sentences; replace jargon with plain language; target Flesch ease ≥60

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

102 broken link(s) on the page

+5% 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

¥44,000 investment → ¥294,488/month returns + JPY 100,000,000 risk avoided

Payback period: < 1 month First-year ROI: +7931%

Investment

¥44,000

6h · 5 findings

Monthly returns

¥294,488 /mo

~¥3,533,850 / year

  • Conversions recovered ¥294,294
  • Bandwidth savings ¥193

Regulatory risk avoided

JPY 100,000,000

if kept compliant

  • APPI JPY 100,000,000

Payback period

0 12mo 24mo

¥12,000 — 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

¥44,000

5.5 developer hours at ¥8000/hr

Based on Japan rates (¥8000/hr)

Quick wins
¥12,000 3 fixes in ~90 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
¥ /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

¥8,333,526 / month at risk

~¥100,002,317 / year if left unfixed

Compliance Risk

¥100,000,000

APPI
  • No privacy policy link detected
    APPI: JPY 100,000 – JPY 100,000,000
  • 4 advertising/retargeting trackers detected
    APPI: JPY 100,000 – JPY 100,000,000
  • Trackers detected but no cookie policy found
    APPI: JPY 100,000 – JPY 100,000,000

+2 more

Bandwidth Waste

¥193 /mo

16173.4 MB/mo × 11.940 JPY/GB

  • Optimize transfer: save ~1.6 MB per page load
    Saves ¥193/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

Unique monthly visitors from your analytics

Purchases, signups, or key actions

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

Was this report useful?

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

40
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

3.40 s

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

4.00 s

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

2.37 s

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

0.107

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

14.05 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.

35.83 s

Detailed Report

Audit breakdown by category with detailed findings.

40

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.

RequestCache TTLTransfer Size
asahi-net.jp/asset/fonts/NotoSansJP-Bold.woff20.0 ms444.2 KiB
asahi-net.jp/asset/fonts/NotoSansJP-Medium.woff20.0 ms441.6 KiB
asahi-net.jp/asset/fonts/NotoSansJP-Regular.woff20.0 ms436.7 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/bnr-auhikari.png0.0 ms262.7 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/mv-slide-04.png0.0 ms188.2 KiB
asahi-net.jp/asset/img/top/recommend-image-sp.png0.0 ms181.6 KiB
asahi-net.jp/asset/img/top/mv-01-sp.jpg0.0 ms115.7 KiB
/signals/config/1756718828368818?v=2.9.303&r=stable&domai...1200.0 s125.3 KiB
asahi-net.jp/asset/js/app.js0.0 ms87.4 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
asahi-net.jp/asset/img/common/campaign/2604506222/bnr-wimax5g_start.png0.0 ms74.4 KiB
asahi-net.jp/asset/fonts/OpenSans-Light.woff20.0 ms59.2 KiB
asahi-net.jp/asset/fonts/OpenSans-SemiBold.woff20.0 ms59.1 KiB
asahi-net.jp/asset/css/style.css0.0 ms57.3 KiB
asahi-net.jp/asset/img/common/campaign/2307357348/bnr-kansha.svg0.0 ms40.4 KiB
asahi-net.jp/asset/img/top/recommend-out-01-sp.jpg0.0 ms38.2 KiB
asahi-net.jp/asset/img/top/mv-slide-06-260306.png0.0 ms35.8 KiB
asahi-net.jp/asset/img/top/recommend-home-01-sp.jpg0.0 ms35.7 KiB
asahi-net.jp/asset/img/top/card-option-01.jpg0.0 ms30.4 KiB
cache.dga.jp/s/common_72/i_search_assist_v3_1.js1800.0 s33.4 KiB
asahi-net.jp/asset/img/common/bnr-norton_id_adviser.png0.0 ms24.3 KiB
asahi-net.jp/asset/img/common/campaign/2604506222/img-mv_slide_03_wimax5g.png0.0 ms24.0 KiB
asahi-net.jp/asset/img/top/card-option-03.jpg0.0 ms21.2 KiB
/asset/img/common/campaign/2602485136/img-mv_slide_02_hik...0.0 ms20.9 KiB
asahi-net.jp/asset/img/top/recommend-option-01-sp.jpg0.0 ms20.5 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/img-mv_slide_01_hikari.svg0.0 ms20.4 KiB
asahi-net.jp/asset/img/top/card-out-02.png0.0 ms16.5 KiB
dmp.im-apps.net/sdk/log.js9373.0 s22.7 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
/signals/config/197896148995305?v=2.9.303&r=stable&domain...1200.0 s16.7 KiB
/signals/config/1486235682585847?v=2.9.303&r=stable&domai...1200.0 s16.7 KiB
ac.fanp.me/ck/3aed840a1186Y609/cookie.js0.0 ms14.2 KiB
asahi-net.jp/asset/img/top/card-home-02.png0.0 ms14.1 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/bnr-hikari_cross_start.svg0.0 ms13.9 KiB
/asset/img/common/campaign/2602485136/bnr-hikari_start-sh...0.0 ms13.4 KiB
asahi-net.jp/asset/img/common/campaign/2307357348/bnr-hikari_au_set.svg0.0 ms11.6 KiB
t.afi-b.com/jslib/lpcv.js?cid=47128d5d&pid=X16316w86400.0 s28.2 KiB
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s11.8 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/img-mv_slide_05_withflets.svg0.0 ms10.8 KiB
taj1.ebis.ne.jp/rHwlksvY/cmt.js600.0 s10.2 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/bnr-syokai.svg0.0 ms9.3 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/bnr-withflets.svg0.0 ms8.1 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/bnr-ip_wimax.svg0.0 ms7.0 KiB
asahi-net.jp/asset/img/top/card-home-01.png0.0 ms7.0 KiB
asahi-net.jp/asset/img/top/card-out-01.png0.0 ms6.1 KiB
asahi-net.jp/asset/img/top/card-home-03.png0.0 ms5.6 KiB
asahi-net.jp/asset/img/common/footer-license-04.gif0.0 ms5.3 KiB
/parts/multi_faq_for_json.php?callback=jQuery360098072391...0.0 ms5.0 KiB
ac.spider-one-af.net/fpc/track.min.js0.0 ms4.8 KiB
asahi-net.jp/asset/img/top/recommend-heading-sp.png0.0 ms4.7 KiB
asahi-net.jp/callback_inPageOPT.js0.0 ms4.5 KiB
asahi-net.jp/asset/img/common/footer-license-03.png0.0 ms3.8 KiB
asahi-net.jp/asset/js/campaign_spotlight.js0.0 ms3.5 KiB
cdn.smartnews-ads.com/i/pixel.js150.0 s3.3 KiB
asahi-net.jp/callback_inPageFAQ.js0.0 ms2.7 KiB
asahi-net.jp/asset/img/common/footer-license-02.svg0.0 ms2.4 KiB
dmp.im-apps.net/js/1024654/0001/itm.js11660.0 s3.4 KiB
dmp.im-apps.net/js/1024653/0001/itm.js11660.0 s3.4 KiB
asahi-net.jp/asset/img/common/footer-license-01.png0.0 ms2.2 KiB
asahi-net.jp/asset/img/top/icon-award.svgz0.0 ms2.2 KiB
asahi-net.jp/asset/img/common/logo.svg0.0 ms2.1 KiB
asahi-net.jp/asset/img/common/icon-faq.svgz0.0 ms1.7 KiB
asahi-net.jp/asset/img/top/icon-commitment.svgz0.0 ms1.6 KiB
ac.spider-one-af.net/fpc/param.min.js0.0 ms1.6 KiB
asahi-net.jp/asset/css/campaign_spotlight.css0.0 ms1.6 KiB
asahi-net.jp/asset/img/common/icon-campaign.svgz0.0 ms1.4 KiB
cache.dga.jp/s/common_72/search_tool_v3_1.js724.0 s1.6 KiB
asahi-net.jp/asset/img/common/icon-global.svgz0.0 ms1.4 KiB
asahi-net.jp/asset/img/common/icon-news.svgz0.0 ms1.3 KiB
asahi-net.jp/asset/img/top/icon-clipboard.svgz0.0 ms1.2 KiB
asahi-net.jp/asset/img/common/icon-mypage.svgz0.0 ms1.1 KiB
asahi-net.jp/asset/img/common/icon-pdf.svgz0.0 ms1.1 KiB
asahi-net.jp/asset/img/common/icon-mail.svgz0.0 ms1.0 KiB
asahi-net.jp/asset/img/common/icon-support.svgz0.0 ms1.0 KiB
asahi-net.jp/asset/img/common/icon-line-01.svgz0.0 ms893 B
asahi-net.jp/asset/img/common/icon-scroll-top.svgz0.0 ms893 B
asahi-net.jp/asset/img/top/icon-check.svgz0.0 ms890 B
asahi-net.jp/asset/img/common/icon-slider-arrow-prev.svgz0.0 ms869 B
asahi-net.jp/asset/img/common/icon-slider-arrow-next.svgz0.0 ms867 B
asahi-net.jp/asset/img/common/icon-chevron-right.svgz0.0 ms849 B
asahi-net.jp/asset/img/common/icon-blank-01.svgz0.0 ms843 B
asahi-net.jp/asset/img/common/icon-blank-02.svgz0.0 ms843 B
cache.dga.jp/s/common_72/new_ac.css896.0 s630 B
asahi-net.jp/style_module.css0.0 ms527 B
/rec.php?ebisV=6.20&argument=rHwlksvY&referrer=&pagetitle...0.0 ms525 B
/p?id=e198b9e15117b3dad1116d62&t=1776899057&url=https%3A%...0.0 ms227 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.00086] map[node:map[boundingRect:map[bottom:472 height:101 left:24 right:370 top:371 width:346] lhId:page-11-P nodeLabel:つなぐをつくる、 つなぐをささえる。 path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,0,DIV,0,DIV,1,P selector:div.m-top-mv > div.m-top-mv__wrapper > div.m-top-mv__copy > p.m-top-mv__copy-bottom snippet:<p class="m-top-mv__copy-bottom"> type:node] score:0.000829 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:552 height:472 left:0 right:412 top:80 width:412] lhId:page-6-IMG nodeLabel:div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,0,DIV,1,PICTURE,1,IMG selector:div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image snippet:<img src="/asset/img/top/mv-01-sp.jpg" width="750" height="1000" alt="" loading="eager" class="m-top-mv__image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:63 height:14 left:332 right:388 top:49 width:56] lhId:page-12-SPAN nodeLabel:メニュー path:1,HTML,1,BODY,3,DIV,0,HEADER,0,DIV,0,DIV,1,BUTTON,1,SPAN selector:div.h-header__fixed > div.h-header__inner > button.h-header__button > span.h-header__button-label snippet:<span class="h-header__button-label js-header-button-label" data-text-open="メニュー" data-text-close="閉じる"> type:node] score:3.1e-05 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:552 height:472 left:0 right:412 top:80 width:412] lhId:page-6-IMG nodeLabel:div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,0,DIV,1,PICTURE,1,IMG selector:div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image snippet:<img src="/asset/img/top/mv-01-sp.jpg" width="750" height="1000" alt="" loading="eager" class="m-top-mv__image"> type:node]]] type:subitems]]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.107476] map[node:map[boundingRect:map[bottom:1239 height:535 left:0 right:412 top:703 width:412] lhId:page-13-SECTION nodeLabel:顧客満足度No.1獲得 品質を追求し、 価格もこだわり抜く ASAHIネットは、外部調査機関が実施するインターネット・サービス・プロバイダ顧客満足度調査にお… path:1,HTML,1,BODY,3,DIV,2,MAIN,2,SECTION selector:body > div.m-wrapper > main.m-main > section.m-section-lv2--bg-primary snippet:<section class="m-section-lv2--bg-primary"> type:node] score:0.107476 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:613 height:121 left:-1212 right:-848 top:492 width:364] lhId:page-24-IMG nodeLabel:ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12カ月間無料… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,0,DIV,1,A,0,IMG selector:div.slick-track > div.m-top-mv__slide-item > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_05_withflets.svg" alt="ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]]]

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.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:113.806 source:map[type:text value:[unattributed]]] map[reflowTime:34.318 source:map[column:48173 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:3.189 source:map[column:48849 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.185 source:map[column:48907 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.144 source:map[column:48971 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.262 source:map[column:49884 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:2.776 source:map[column:48195 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.524 source:map[column:83617 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]]]

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.

URLResource SizeEst Savings
ASAHIネット auひかり 特典　長期でおトク！月額利用料割引 開通月無料 ホームコース 2カ月目586円割引、最大3～36カ月目571円割引　 マンション… article#slick-slide07 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/common/campaign/2309357351/bnr-auhikari.png262.2 KiB229.2 KiB
ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引 div.slick-track > div.m-top-mv__slide-item > a.m-top-mv__slide-link > img.m-top-mv__slide-image
asahi-net.jp/asset/img/common/campaign/2309357351/mv-slide-04.png187.7 KiB165.7 KiB
div.m-recommend-tab__bnr > section.m-top-recommend-tab > div.m-top-recommend-tab__content > ::after div.m-recommend-tab__bnr > section.m-top-recommend-tab > div.m-top-recommend-tab__content > ::after
asahi-net.jp/asset/img/top/recommend-image-sp.png181.1 KiB142.1 KiB
WiMAX +5G スタートキャンペーン article.m-campaign-slider__item > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/common/campaign/2604506222/bnr-wimax5g_start.png74.0 KiB41.0 KiB
おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 div.slick-track > div.m-top-mv__slide-item > a.m-top-mv__slide-link > img.m-top-mv__slide-image
asahi-net.jp/asset/img/top/mv-slide-06-260306.png35.4 KiB13.4 KiB
a.m-card > div.m-card__image > picture > img.m-media__img a.m-card > div.m-card__image > picture > img.m-media__img
asahi-net.jp/asset/img/common/bnr-norton_id_adviser.png23.9 KiB12.2 KiB
div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
asahi-net.jp/asset/img/top/mv-01-sp.jpg115.0 KiB10.0 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-option-01.jpg30.0 KiB8.8 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-option-03.jpg20.8 KiB6.4 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-out-02.png16.2 KiB4.9 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-home-02.png13.7 KiB4.2 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:1043.268 label:Time to first byte subpart:timeToFirstByte] map[duration:11.09 label:Resource load delay subpart:resourceLoadDelay] map[duration:1234.272 label:Resource load duration subpart:resourceLoadDuration] map[duration:555.078 label:Element render delay subpart:elementRenderDelay]]
lhId: page-6-IMG
nodeLabel: div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
path: 1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,0,DIV,1,PICTURE,1,IMG
selector: div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
snippet: <img src="/asset/img/top/mv-01-sp.jpg" width="750" height="1000" alt="" loading="eager" class="m-top-mv__image">

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-6-IMG
nodeLabel: div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
path: 1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,0,DIV,1,PICTURE,1,IMG
selector: div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
snippet: <img src="/asset/img/top/mv-01-sp.jpg" width="750" height="1000" alt="" loading="eager" class="m-top-mv__image">

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
value: No additional origins are good candidates for preconnecting

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.

URLTransfer SizeDuration
asahi-net.jp/asset/css/style.css57.3 KiB332 ms
asahi-net.jp/asset/css/campaign_spotlight.css1.6 KiB
asahi-net.jp/style_module.css527 B
asahi-net.jp/asset/js/campaign_spotlight.js3.5 KiB166 ms

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 1.5 s
URLTime Spent
www.ne.jp/1.5 s
asahi-net.jp/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
顧客満足度No.1獲得 品質を追求し、 価格もこだわり抜く ASAHIネットは、外部調査機関が実施するインターネット・サービス・プロバイダ顧客満足度調査にお… body > div.m-wrapper > main.m-main > section.m-section-lv2--bg-primary
0.107
つなぐをつくる、 つなぐをささえる。 div.m-top-mv > div.m-top-mv__wrapper > div.m-top-mv__copy > p.m-top-mv__copy-bottom
0.001
メニュー div.h-header__fixed > div.h-header__inner > button.h-header__button > span.h-header__button-label
0.000

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

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.

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: 150 ms 53.1 KiB
URLTransfer SizeEst Savings
asahi-net.jp/asset/css/style.css56.8 KiB53.1 KiB

Consider reducing the time spent parsing, compiling, and executing JS. You may find delivering smaller JS payloads helps with this. Learn how to reduce Javascript execution time.

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLTotal CPU TimeScript EvaluationScript Parse
asahi-net.jp/2.5 s46 ms0.5 ms
Unattributable1.6 s30 ms0.0 ms
www.googletagmanager.com/gtm.js?id=GTM-5N2BLR4734 ms596 ms80 ms
asahi-net.jp/asset/js/app.js432 ms84 ms24 ms
/parts/multi_faq_for_json.php?callback=jQuery360098072391...399 ms373 ms0.9 ms
www.googletagmanager.com/gtm.js?id=GTM-5X4RL2F&l=itm_dl2_1024653353 ms297 ms45 ms
sp-trk.com/t/27rp4vqy?a=1776899058871&o=wgdgdu9lpj327 ms312 ms1.7 ms
cache.dga.jp/s/common_72/i_search_assist_v3_1.js323 ms251 ms8.2 ms
www.googletagmanager.com/gtag/js?id=G-0MWMB0GRZF&cx=c&gtm=4e64m0h2314 ms266 ms45 ms
connect.facebook.net/en_US/fbevents.js284 ms204 ms28 ms
www.googletagmanager.com/gtag/js?id=AW-699497906&cx=c&gtm=4e64m0h2283 ms231 ms51 ms
/signals/config/1756718828368818?v=2.9.303&r=stable&domai...247 ms213 ms33 ms
/gtag/destination?id=DC-9897441&l=itm_dl2_1024653&cx=c&gt...225 ms188 ms32 ms
www.googletagmanager.com/gtag/js?id=AW-17543968935&cx=c&gtm=4e64m0h2190 ms157 ms32 ms
tracking.sitest.jp/tag?p=p6940017a28828&u=https%3A%2F%2Fasahi-net.jp%2F176 ms119 ms28 ms
/gtag/destination?id=AW--&l=itm_dl2_1024653&cx=c&gtm=4e64k1136 ms106 ms29 ms
/signals/config/197896148995305?v=2.9.303&r=stable&domain...102 ms89 ms7.9 ms
/signals/config/1486235682585847?v=2.9.303&r=stable&domai...87 ms77 ms7.6 ms
t.afi-b.com/jslib/lpcv.js?cid=47128d5d&pid=X16316w85 ms75 ms3.5 ms
www.googletagmanager.com/gtag/js?id=AW-69949790663 ms24 ms38 ms
www.googletagmanager.com/gtm.js?id=GTM-5X4RL2F&l=itm_dl2_102465462 ms22 ms41 ms
www.google-analytics.com/analytics.js53 ms44 ms3.3 ms
www.googletagmanager.com/gtag/js?id=AW-1754396893551 ms22 ms29 ms

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.

CategoryTime Spent
Script Evaluation4.1 s
Other2.3 s
Style & Layout1.7 s
Script Parsing & Compilation654 ms
Rendering381 ms
Garbage Collection241 ms
Parse HTML & CSS90 ms

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 5.5 KiB
URLTransfer SizeEst Savings
ac.fanp.me/ck/3aed840a1186Y609/cookie.js14.1 KiB5.5 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: 0.0 ms 1.0 MiB
URLTransfer SizeEst Savings
tracking.sitest.jp/tag?p=p6940017a28828&u=https%3A%2F%2Fasahi-net.jp%2F263.1 KiB179.3 KiB
www.googletagmanager.com/gtag/js?id=AW-699497906143.6 KiB105.8 KiB
www.googletagmanager.com/gtag/js?id=AW-17543968935137.2 KiB102.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-5X4RL2F&l=itm_dl2_1024654176.2 KiB98.2 KiB
/gtag/destination?id=AW--&l=itm_dl2_1024653&cx=c&gtm=4e64k1133.9 KiB68.3 KiB
www.googletagmanager.com/gtag/js?id=G-0MWMB0GRZF&cx=c&gtm=4e64m0h2176.9 KiB66.0 KiB
/gtag/destination?id=DC-9897441&l=itm_dl2_1024653&cx=c&gt...129.7 KiB64.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-5X4RL2F&l=itm_dl2_1024653176.2 KiB62.4 KiB
www.googletagmanager.com/gtag/js?id=AW-17543968935&cx=c&gtm=4e64m0h2136.7 KiB61.0 KiB
www.googletagmanager.com/gtag/js?id=AW-699497906&cx=c&gtm=4e64m0h2143.7 KiB57.3 KiB
asahi-net.jp/asset/js/app.js86.7 KiB46.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-5N2BLR4189.7 KiB45.4 KiB
/signals/config/1756718828368818?v=2.9.303&r=stable&domai...125.2 KiB34.6 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB33.9 KiB
cache.dga.jp/s/common_72/i_search_assist_v3_1.js32.8 KiB21.8 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.

URLTransfer Size
asahi-net.jp/asset/fonts/NotoSansJP-Bold.woff2444.2 KiB
asahi-net.jp/asset/fonts/NotoSansJP-Medium.woff2441.6 KiB
asahi-net.jp/asset/fonts/NotoSansJP-Regular.woff2436.7 KiB
tracking.sitest.jp/tag?p=p6940017a28828&u=https%3A%2F%2Fasahi-net.jp%2F265.0 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/bnr-auhikari.png262.7 KiB
www.googletagmanager.com/gtm.js?id=GTM-5N2BLR4192.3 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/mv-slide-04.png188.2 KiB
asahi-net.jp/asset/img/top/recommend-image-sp.png181.6 KiB
www.googletagmanager.com/gtag/js?id=G-0MWMB0GRZF&cx=c&gtm=4e64m0h2177.0 KiB
www.googletagmanager.com/gtm.js?id=GTM-5X4RL2F&l=itm_dl2_1024653176.2 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.
div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img
div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img
div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img
div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img
PCや周辺機器の設定・トラブル解決 ul.g-row > li.g-col--12 > a.m-shadow-bnr > img.m-shadow-bnr__image
ASAHIネット Tips Forum　インターネット接続・プロバイダに関する情報発信メディア ul.g-row > li.g-col--12 > a.m-shadow-bnr > img.m-shadow-bnr__image
SPEED TEST　Powered by RBB SPEED TEST ul.g-row > li.g-col--12 > a.m-shadow-bnr > img.m-shadow-bnr__image
IPv6接続確認ページ ul.g-row > li.g-col--12 > a.m-shadow-bnr > img.m-shadow-bnr__image

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

●Optimize DOM size
●Font display
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 10 user timings
●Avoid long main-thread tasks 20 long tasks found
●Avoid non-composited animations 2 animated elements found
●Network Requests
●Network Round Trip Times 280 ms
●Server Backend Latencies 740 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 30 ms
○INP breakdown
97

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.

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
顧客満足度No.1獲得 section.m-section-lv2--bg-primary > div.m-top-content > div.m-container > h2.m-top-content__heading-1
家で使う ul.m-recommend-tab__row > li.m-recommend-tab__col > button.m-recommend-tab__button > span.m-recommend-tab__button-label

These are opportunities to improve the legibility of your content.

○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
●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
●`[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
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
●Definition list items are wrapped in `<dl>` elements
●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
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[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 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
○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.
○Skip links are focusable.
○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
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○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.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Topics
dmp.im-apps.net/js/1024653/0001/itm.js line 8, col 241
AttributionReporting
connect.facebook.net/en_US/fbevents.js line 279, col 769

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.

SourceDescription
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=4DCZE3EGH7&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=&cat=&price=&quantity=&et_optout=false&r=1776899059.2921383&pvid=zuikqjibttrmoantkmq&su=60404282-d69c-4272-a311-48c677a769ce&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22Android%22&platform_version=%2211.0%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=4DCZE3EGH7&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=&cat=safivt&price=&quantity=&et_optout=false&r=1776899059.4988933&pvid=zuikqjibttrmoantkmq&su=60404282-d69c-4272-a311-48c677a769ce&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22Android%22&platform_version=%2211.0%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=&cat=&price=&quantity=&et_optout=false&r=1776899059.2372434&pvid=zuikqjibttrmoantkmq&su=60404282-d69c-4272-a311-48c677a769ce&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22Android%22&platform_version=%2211.0%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=&cat=safivt&price=&quantity=&et_optout=false&r=1776899060.0943959&pvid=zuikqjibttrmoantkmq&su=60404282-d69c-4272-a311-48c677a769ce&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22Android%22&platform_version=%2211.0%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=i1%2Ci2%2Ci3&cat=%2C%2C&price=%2C%2C&quantity=%2C%2C&et_optout=false&r=1776899059.0871322&pvid=zuikqjibttrmoantkmq&su=60404282-d69c-4272-a311-48c677a769ce&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22Android%22&platform_version=%2211.0%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=4DCZE3EGH7&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=4DCZE3EGH7&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
●Uses HTTPS
●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
●No issues in the `Issues` panel in Chrome Devtools
●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
100

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.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●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

41
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
97
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
77
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
100
SEO Measures basic SEO optimizations: meta tags, crawlability, link text, and mobile friendliness.

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.

1.22 s

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

8.11 s

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

84 ms

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

0.541

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

4.34 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.

8.16 s

Detailed Report

Audit breakdown by category with detailed findings.

41

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.

RequestCache TTLTransfer Size
asahi-net.jp/asset/fonts/NotoSansJP-Bold.woff20.0 ms444.2 KiB
asahi-net.jp/asset/fonts/NotoSansJP-Medium.woff20.0 ms441.6 KiB
asahi-net.jp/asset/fonts/NotoSansJP-Regular.woff20.0 ms436.6 KiB
asahi-net.jp/asset/img/top/mv-01.jpg0.0 ms392.9 KiB
asahi-net.jp/asset/img/top/recommend-image.png0.0 ms289.9 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/bnr-auhikari.png0.0 ms262.7 KiB
asahi-net.jp/asset/img/top/recommend-home-01.jpg0.0 ms245.0 KiB
asahi-net.jp/asset/img/top/recommend-out-01.jpg0.0 ms204.2 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/mv-slide-04.png0.0 ms188.1 KiB
asahi-net.jp/asset/img/top/recommend-option-01.jpg0.0 ms137.4 KiB
/signals/config/1756718828368818?v=2.9.303&r=stable&domai...1200.0 s125.2 KiB
asahi-net.jp/asset/js/app.js0.0 ms87.2 KiB
connect.facebook.net/en_US/fbevents.js1200.0 s96.6 KiB
asahi-net.jp/asset/img/common/bnr-norton_id_adviser-2x.png0.0 ms81.8 KiB
asahi-net.jp/asset/img/common/campaign/2604506222/bnr-wimax5g_start.png0.0 ms74.4 KiB
asahi-net.jp/asset/fonts/OpenSans-Light.woff20.0 ms59.2 KiB
asahi-net.jp/asset/fonts/OpenSans-SemiBold.woff20.0 ms59.1 KiB
asahi-net.jp/asset/css/style.css0.0 ms57.1 KiB
asahi-net.jp/asset/img/common/campaign/2307357348/bnr-kansha.svg0.0 ms40.4 KiB
asahi-net.jp/asset/img/top/mv-slide-06-260306.png0.0 ms35.8 KiB
asahi-net.jp/asset/img/top/card-option-01.jpg0.0 ms30.4 KiB
cache.dga.jp/s/common_72/i_search_assist_v3_1.js1742.0 s33.4 KiB
asahi-net.jp/asset/img/common/campaign/2604506222/img-mv_slide_03_wimax5g.png0.0 ms24.0 KiB
asahi-net.jp/asset/img/top/card-option-03.jpg0.0 ms21.2 KiB
/asset/img/common/campaign/2602485136/img-mv_slide_02_hik...0.0 ms20.8 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/img-mv_slide_01_hikari.svg0.0 ms20.4 KiB
asahi-net.jp/asset/img/top/card-out-02.png0.0 ms16.5 KiB
dmp.im-apps.net/sdk/log.js9313.0 s22.7 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
/signals/config/197896148995305?v=2.9.303&r=stable&domain...1200.0 s16.7 KiB
/signals/config/1486235682585847?v=2.9.303&r=stable&domai...1200.0 s16.7 KiB
ac.fanp.me/ck/3aed840a1186Y609/cookie.js0.0 ms14.2 KiB
asahi-net.jp/asset/img/top/card-home-02.png0.0 ms14.1 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/bnr-hikari_cross_start.svg0.0 ms13.9 KiB
/asset/img/common/campaign/2602485136/bnr-hikari_start-sh...0.0 ms13.4 KiB
asahi-net.jp/asset/img/common/campaign/2307357348/bnr-hikari_au_set.svg0.0 ms11.6 KiB
t.afi-b.com/jslib/lpcv.js?cid=47128d5d&pid=X16316w86400.0 s28.2 KiB
s.yimg.jp/images/listing/tool/cv/ytag.js600.0 s11.8 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/img-mv_slide_05_withflets.svg0.0 ms10.8 KiB
taj1.ebis.ne.jp/rHwlksvY/cmt.js600.0 s10.4 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/bnr-syokai.svg0.0 ms9.3 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/bnr-withflets.svg0.0 ms8.1 KiB
asahi-net.jp/asset/img/common/campaign/2602485136/bnr-ip_wimax.svg0.0 ms7.0 KiB
asahi-net.jp/asset/img/top/card-home-01.png0.0 ms7.0 KiB
asahi-net.jp/asset/img/top/card-out-01.png0.0 ms6.1 KiB
asahi-net.jp/asset/img/top/recommend-heading.png0.0 ms5.9 KiB
asahi-net.jp/asset/img/top/card-home-03.png0.0 ms5.6 KiB
asahi-net.jp/asset/img/common/footer-license-04.gif0.0 ms5.3 KiB
/parts/multi_faq_for_json.php?callback=jQuery360086123854...0.0 ms5.0 KiB
ac.spider-one-af.net/fpc/track.min.js0.0 ms4.8 KiB
asahi-net.jp/callback_inPageOPT.js0.0 ms4.5 KiB
asahi-net.jp/asset/img/common/footer-license-03.png0.0 ms3.8 KiB
asahi-net.jp/asset/js/campaign_spotlight.js0.0 ms3.5 KiB
cdn.smartnews-ads.com/i/pixel.js150.0 s3.3 KiB
asahi-net.jp/callback_inPageFAQ.js0.0 ms2.7 KiB
asahi-net.jp/asset/img/common/footer-license-02.svg0.0 ms2.4 KiB
dmp.im-apps.net/js/1024654/0001/itm.js11599.0 s3.4 KiB
dmp.im-apps.net/js/1024653/0001/itm.js11599.0 s3.4 KiB
asahi-net.jp/asset/img/common/footer-license-01.png0.0 ms2.2 KiB
asahi-net.jp/asset/img/top/icon-award.svgz0.0 ms2.2 KiB
asahi-net.jp/asset/img/common/logo.svg0.0 ms2.1 KiB
asahi-net.jp/asset/img/common/icon-faq.svgz0.0 ms1.7 KiB
asahi-net.jp/asset/img/top/icon-commitment.svgz0.0 ms1.6 KiB
ac.spider-one-af.net/fpc/param.min.js0.0 ms1.6 KiB
asahi-net.jp/asset/css/campaign_spotlight.css0.0 ms1.6 KiB
asahi-net.jp/asset/img/common/icon-campaign.svgz0.0 ms1.4 KiB
cache.dga.jp/s/common_72/search_tool_v3_1.js664.0 s1.6 KiB
asahi-net.jp/asset/img/common/icon-global.svgz0.0 ms1.4 KiB
asahi-net.jp/asset/img/common/icon-news.svgz0.0 ms1.3 KiB
asahi-net.jp/asset/img/top/icon-clipboard.svgz0.0 ms1.2 KiB
asahi-net.jp/asset/img/common/icon-mypage.svgz0.0 ms1.1 KiB
asahi-net.jp/asset/img/common/icon-pdf.svgz0.0 ms1.1 KiB
asahi-net.jp/asset/img/common/icon-mail.svgz0.0 ms1.0 KiB
asahi-net.jp/asset/img/common/icon-support.svgz0.0 ms1.0 KiB
asahi-net.jp/asset/img/common/icon-search.svgz0.0 ms988 B
asahi-net.jp/asset/img/common/icon-hmenu-support.svg0.0 ms905 B
asahi-net.jp/asset/img/common/icon-line-01.svgz0.0 ms897 B
asahi-net.jp/asset/img/common/icon-scroll-top.svgz0.0 ms897 B
asahi-net.jp/asset/img/top/icon-check.svgz0.0 ms894 B
asahi-net.jp/asset/img/common/icon-slider-arrow-prev.svgz0.0 ms873 B
asahi-net.jp/asset/img/common/icon-slider-arrow-next.svgz0.0 ms872 B
asahi-net.jp/asset/img/common/icon-chevron-right.svgz0.0 ms853 B
asahi-net.jp/asset/img/common/icon-blank-01.svgz0.0 ms848 B
asahi-net.jp/asset/img/common/icon-blank-02.svgz0.0 ms845 B
cache.dga.jp/s/common_72/new_ac.css837.0 s630 B
asahi-net.jp/style_module.css0.0 ms533 B
/rec.php?ebisV=6.20&argument=rHwlksvY&referrer=&pagetitle...0.0 ms522 B
/p?id=e198b9e15117b3dad1116d62&t=1776899118&url=https%3A%...0.0 ms226 B

Layout shifts occur when elements move absent any user interaction. Investigate the causes of layout shifts, such as elements being added, removed, or their fonts changing as the page loads.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.541104] map[node:map[boundingRect:map[bottom:1242 height:538 left:0 right:1350 top:704 width:1350] lhId:page-22-SECTION nodeLabel:顧客満足度No.1獲得 品質を追求し、価格もこだわり抜く ASAHIネットは、外部調査機関が実施するインターネット・サービス・プロバイダ顧客満足度調査におい… path:1,HTML,1,BODY,3,DIV,2,MAIN,2,SECTION selector:body > div.m-wrapper > main.m-main > section.m-section-lv2--bg-primary snippet:<section class="m-section-lv2--bg-primary"> type:node] score:0.487635 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:497 height:387 left:0 right:1350 top:110 width:1350] lhId:page-0-IMG nodeLabel:div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,0,DIV,1,PICTURE,1,IMG selector:div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image snippet:<img src="https://asahi-net.jp/asset/img/top/mv-01.jpg" width="750" height="1000" alt="" loading="eager" class="m-top-mv__image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1242 height:538 left:0 right:1350 top:704 width:1350] lhId:page-22-SECTION nodeLabel:顧客満足度No.1獲得 品質を追求し、価格もこだわり抜く ASAHIネットは、外部調査機関が実施するインターネット・サービス・プロバイダ顧客満足度調査におい… path:1,HTML,1,BODY,3,DIV,2,MAIN,2,SECTION selector:body > div.m-wrapper > main.m-main > section.m-section-lv2--bg-primary snippet:<section class="m-section-lv2--bg-primary"> type:node] score:0.047662 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:574 height:99 left:101 right:398 top:475 width:297] lhId:page-24-IMG nodeLabel:スタートキャンペーン実施中！ 2026年5月31日まで　新規　特典総額最大69,600円　※24カ月間の特典総額／消費税相当を含む　転用　月額利用料　最大36… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,3,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide20 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_01_hikari.svg" alt="スタートキャンペーン実施中！ 2026年5月31日まで　新規　特典総額最大69,600円　※24カ月間の特典総額／消費税相当を含む　転用　月額利用料…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:110 height:110 left:584 right:1350 top:0 width:766] lhId:page-17-DIV nodeLabel:よくあるご質問 お問い合わせ Webメール サイト内検索 法人のお客様 光回線 格安SIM WiMAX +5G 各種サービス 会員サポートへ マイページ path:1,HTML,1,BODY,3,DIV,0,HEADER,0,DIV,0,DIV,2,DIV selector:header.h-header > div.h-header__fixed > div.h-header__inner > div.h-header__utility snippet:<div class="h-header__utility"> type:node] score:0.005807 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:574 height:99 left:101 right:398 top:475 width:297] lhId:page-24-IMG nodeLabel:スタートキャンペーン実施中！ 2026年5月31日まで　新規　特典総額最大69,600円　※24カ月間の特典総額／消費税相当を含む　転用　月額利用料　最大36… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,3,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide20 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_01_hikari.svg" alt="スタートキャンペーン実施中！ 2026年5月31日まで　新規　特典総額最大69,600円　※24カ月間の特典総額／消費税相当を含む　転用　月額利用料…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
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items: [map[node:map[type:text value:Total] score:0.006262] map[node:map[boundingRect:map[bottom:574 height:99 left:1304 right:1601 top:475 width:297] lhId:page-4-IMG nodeLabel:ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引 path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,6,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide23 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2309357351/mv-slide-04.png" alt="ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node] score:0.005995 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:574 height:99 left:1649 right:1946 top:475 width:297] lhId:page-26-IMG nodeLabel:ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12カ月間無料… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,7,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide24 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_05_withflets.svg" alt="ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:574 height:99 left:1304 right:1601 top:475 width:297] lhId:page-4-IMG nodeLabel:ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引 path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,6,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide23 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2309357351/mv-slide-04.png" alt="ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node] score:0.000267 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:574 height:99 left:1304 right:1601 top:475 width:297] lhId:page-4-IMG nodeLabel:ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引 path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,6,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide23 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2309357351/mv-slide-04.png" alt="ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.006262] map[node:map[boundingRect:map[bottom:574 height:99 left:1649 right:1946 top:475 width:297] lhId:page-26-IMG nodeLabel:ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12カ月間無料… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,7,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide24 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_05_withflets.svg" alt="ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node] score:0.005995 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:574 height:99 left:1994 right:2291 top:475 width:297] lhId:page-9-IMG nodeLabel:おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,8,DIV,0,A,0,IMG selector:div.slick-track > div#slick-slide25 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/top/mv-slide-06-260306.png" alt="おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:574 height:99 left:1649 right:1946 top:475 width:297] lhId:page-26-IMG nodeLabel:ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12カ月間無料… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,7,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide24 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_05_withflets.svg" alt="ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node] score:0.000267 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:574 height:99 left:1649 right:1946 top:475 width:297] lhId:page-26-IMG nodeLabel:ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12カ月間無料… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,7,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide24 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_05_withflets.svg" alt="ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]]]
headings: [map[key:node label:Element subItemsHeading:map[key:extra] valueType:node] map[granularity:0.001 key:score label:Layout shift score subItemsHeading:map[key:cause valueType:text] valueType:numeric]]
items: [map[node:map[type:text value:Total] score:0.0061790000000000005] map[node:map[boundingRect:map[bottom:574 height:99 left:1994 right:2291 top:475 width:297] lhId:page-9-IMG nodeLabel:おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,8,DIV,0,A,0,IMG selector:div.slick-track > div#slick-slide25 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/top/mv-slide-06-260306.png" alt="おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node] score:0.005995 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:574 height:153 left:446 right:905 top:421 width:459] lhId:page-25-IMG nodeLabel:AsahiNet 光 クロスコース 　スタートキャンペーン実施中　2026年5月31日まで　新規　特典総額　最大122,400円　※24カ月間の特典総額／消費… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,4,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide21 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_02_hikaricross.svg" alt="AsahiNet 光 クロスコース 　スタートキャンペーン実施中　2026年5月31日まで　新規　特典総額　最大122,400円　※24カ月間の特典…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:574 height:99 left:1994 right:2291 top:475 width:297] lhId:page-9-IMG nodeLabel:おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,8,DIV,0,A,0,IMG selector:div.slick-track > div#slick-slide25 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/top/mv-slide-06-260306.png" alt="おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node] score:0.000184 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:574 height:99 left:101 right:398 top:475 width:297] lhId:page-24-IMG nodeLabel:スタートキャンペーン実施中！ 2026年5月31日まで　新規　特典総額最大69,600円　※24カ月間の特典総額／消費税相当を含む　転用　月額利用料　最大36… path:1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,1,DIV,1,DIV,0,DIV,3,DIV,1,A,0,IMG selector:div.slick-track > div#slick-slide20 > a.m-top-mv__slide-link > img.m-top-mv__slide-image snippet:<img src="/asset/img/common/campaign/2602485136/img-mv_slide_01_hikari.svg" alt="スタートキャンペーン実施中！ 2026年5月31日まで　新規　特典総額最大69,600円　※24カ月間の特典総額／消費税相当を含む　転用　月額利用料…" width="660" height="220" loading="eager" class="m-top-mv__slide-image"> type:node]]] type:subitems]]]

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.

A forced reflow occurs when JavaScript queries geometric properties (such as offsetWidth) after styles have been invalidated by a change to the DOM state. This can result in poor performance. Learn more about forced reflows and possible mitigations.

Why this matters

Performance issues directly impact user engagement and conversion rates.

headings: [map[key:source label:Top function call valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:1.204 source:map[column:26791 line:25 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]]]
headings: [map[key:source label:Source valueType:source-location] map[granularity:1 key:reflowTime label:Total reflow time valueType:ms]]
items: [map[reflowTime:104.173 source:map[type:text value:[unattributed]]] map[reflowTime:24.099 source:map[column:48173 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:2.144 source:map[column:48849 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.19 source:map[column:48907 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.144 source:map[column:48971 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.283 source:map[column:84202 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.245 source:map[column:49884 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:1.146 source:map[column:48195 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]] map[reflowTime:0.446 source:map[column:83617 line:24 type:source-location url:https://asahi-net.jp/asset/js/app.js urlProvider:network]]]

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.

URLResource SizeEst Savings
div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
asahi-net.jp/asset/img/top/mv-01.jpg391.8 KiB343.4 KiB
ASAHIネット auひかり 特典　長期でおトク！月額利用料割引 開通月無料 ホームコース 2カ月目586円割引、最大3～36カ月目571円割引　 マンション… article.m-campaign-slider__item > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/common/campaign/2309357351/bnr-auhikari.png262.2 KiB250.5 KiB
div.m-recommend-tab__header > div.m-recommend-tab__media > picture > img.m-recommend-tab__image div.m-recommend-tab__header > div.m-recommend-tab__media > picture > img.m-recommend-tab__image
asahi-net.jp/asset/img/top/recommend-home-01.jpg244.6 KiB195.7 KiB
div.m-recommend-tab__bnr > section.m-top-recommend-tab > div.m-top-recommend-tab__content > ::after div.m-recommend-tab__bnr > section.m-top-recommend-tab > div.m-top-recommend-tab__content > ::after
asahi-net.jp/asset/img/top/recommend-image.png289.5 KiB192.1 KiB
ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引 div.slick-track > div#slick-slide23 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
asahi-net.jp/asset/img/common/campaign/2309357351/mv-slide-04.png187.7 KiB176.3 KiB
div.m-recommend-tab__header > div.m-recommend-tab__media > picture > img.m-recommend-tab__image div.m-recommend-tab__header > div.m-recommend-tab__media > picture > img.m-recommend-tab__image
asahi-net.jp/asset/img/top/recommend-out-01.jpg203.7 KiB162.8 KiB
div.m-recommend-tab__header > div.m-recommend-tab__media > picture > img.m-recommend-tab__image div.m-recommend-tab__header > div.m-recommend-tab__media > picture > img.m-recommend-tab__image
asahi-net.jp/asset/img/top/recommend-option-01.jpg137.0 KiB109.6 KiB
a.m-card > div.m-card__image > picture > img.m-media__img a.m-card > div.m-card__image > picture > img.m-media__img
asahi-net.jp/asset/img/common/bnr-norton_id_adviser-2x.png81.4 KiB69.5 KiB
WiMAX +5G スタートキャンペーン article#slick-slide01 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/common/campaign/2604506222/bnr-wimax5g_start.png74.0 KiB62.2 KiB
おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 div.slick-track > div#slick-slide25 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
asahi-net.jp/asset/img/top/mv-slide-06-260306.png35.4 KiB24.0 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-option-01.jpg30.0 KiB22.4 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-option-03.jpg20.8 KiB15.6 KiB
スタートキャンペーン実施中　2026年5月31日まで div.slick-track > div#slick-slide22 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
asahi-net.jp/asset/img/common/campaign/2604506222/img-mv_slide_03_wimax5g.png23.6 KiB12.2 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-out-02.png16.2 KiB12.1 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-home-02.png13.7 KiB10.3 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-home-01.png6.6 KiB5.0 KiB
article.g-col-md--4 > a.m-card > div.m-card__image > img article.g-col-md--4 > a.m-card > div.m-card__image > img
asahi-net.jp/asset/img/top/card-out-01.png5.7 KiB4.3 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:1082.27 label:Time to first byte subpart:timeToFirstByte] map[duration:8.229 label:Resource load delay subpart:resourceLoadDelay] map[duration:1642.256 label:Resource load duration subpart:resourceLoadDuration] map[duration:55.275 label:Element render delay subpart:elementRenderDelay]]
lhId: page-0-IMG
nodeLabel: div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
path: 1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,0,DIV,1,PICTURE,1,IMG
selector: div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
snippet: <img src="https://asahi-net.jp/asset/img/top/mv-01.jpg" width="750" height="1000" alt="" loading="eager" class="m-top-mv__image">

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-IMG
nodeLabel: div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
path: 1,HTML,1,BODY,3,DIV,2,MAIN,1,DIV,0,DIV,0,DIV,1,PICTURE,1,IMG
selector: div.m-top-mv > div.m-top-mv__wrapper > picture > img.m-top-mv__image
snippet: <img src="https://asahi-net.jp/asset/img/top/mv-01.jpg" width="750" height="1000" alt="" loading="eager" class="m-top-mv__image">

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.

URLTransfer SizeDuration
asahi-net.jp/asset/js/campaign_spotlight.js3.5 KiB
asahi-net.jp/asset/css/campaign_spotlight.css1.6 KiB
asahi-net.jp/style_module.css533 B
asahi-net.jp/asset/css/style.css57.1 KiB112 ms

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

Redirects introduce additional delays before the page can be loaded. Learn how to avoid page redirects.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 911 ms
URLTime Spent
www.ne.jp/911 ms
asahi-net.jp/0.0 ms

These are the largest layout shifts observed on the page. Each table item represents a single layout shift, and shows the element that shifted the most. Below each item are possible root causes that led to the layout shift. Some of these layout shifts may not be included in the CLS metric value due to windowing. Learn how to improve CLS

Why this matters

Performance issues directly impact user engagement and conversion rates.

ElementLayout shift score
顧客満足度No.1獲得 品質を追求し、価格もこだわり抜く ASAHIネットは、外部調査機関が実施するインターネット・サービス・プロバイダ顧客満足度調査におい… body > div.m-wrapper > main.m-main > section.m-section-lv2--bg-primary
0.488
顧客満足度No.1獲得 品質を追求し、価格もこだわり抜く ASAHIネットは、外部調査機関が実施するインターネット・サービス・プロバイダ顧客満足度調査におい… body > div.m-wrapper > main.m-main > section.m-section-lv2--bg-primary
0.048
AsahiNet 光 クロスコース 　スタートキャンペーン実施中　2026年5月31日まで　新規　特典総額　最大122,400円　※24カ月間の特典総額／消費… div.slick-track > div#slick-slide21 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.006
AsahiNet 光 クロスコース 　スタートキャンペーン実施中　2026年5月31日まで　新規　特典総額　最大122,400円　※24カ月間の特典総額／消費… div.slick-track > div#slick-slide21 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.006
ASAHIネット auひかり　ホームコース 開通月無料+30カ月間250円割引　マンションコース 開通月無料+24カ月間1,250円割引 div.slick-track > div#slick-slide23 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.006
ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12カ月間無料… div.slick-track > div#slick-slide24 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.006
おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 div.slick-track > div#slick-slide25 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.006
おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 div.slick-track > div#slick-slide25 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.006
よくあるご質問 お問い合わせ Webメール サイト内検索 法人のお客様 光回線 格安SIM WiMAX +5G 各種サービス 会員サポートへ マイページ header.h-header > div.h-header__fixed > div.h-header__inner > div.h-header__utility
0.006
ASAHIネット 光 with フレッツ　プロバイダ月額利用料割引実施中！　ホームコース　開通月無料12カ月間無料　マンションコース　開通月無料12カ月間無料… div.slick-track > div#slick-slide24 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.000
おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 div.slick-track > div#slick-slide25 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.000
スタートキャンペーン実施中！ 2026年5月31日まで　新規　特典総額最大69,600円　※24カ月間の特典総額／消費税相当を含む　転用　月額利用料　最大36… div.slick-track > div#slick-slide20 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.000
AsahiNet 光 クロスコース 　スタートキャンペーン実施中　2026年5月31日まで　新規　特典総額　最大122,400円　※24カ月間の特典総額／消費… div.slick-track > div#slick-slide21 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.000
スタートキャンペーン実施中　2026年5月31日まで div.slick-track > div#slick-slide22 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.000
おかげさまで12年連続第1位受賞　※RBB TODAY ブロードバンドアワード法人版 2025／ブロードバンドアワード2025／光コラボアワード 2025 div.slick-track > div#slick-slide25 > a.m-top-mv__slide-link > img.m-top-mv__slide-image
0.000

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

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.

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: 40 ms 51.5 KiB
URLTransfer SizeEst Savings
asahi-net.jp/asset/css/style.css56.6 KiB51.5 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: 600 ms 1.0 MiB
URLTransfer SizeEst Savings
tracking.sitest.jp/tag?p=p6940017a28828&u=https%3A%2F%2Fasahi-net.jp%2F263.1 KiB179.3 KiB
www.googletagmanager.com/gtag/js?id=AW-699497906144.3 KiB105.9 KiB
www.googletagmanager.com/gtag/js?id=AW-17543968935137.2 KiB102.6 KiB
www.googletagmanager.com/gtm.js?id=GTM-5X4RL2F&l=itm_dl2_1024654176.2 KiB98.2 KiB
/gtag/destination?id=AW--&l=itm_dl2_1024653&cx=c&gtm=4e64k1133.9 KiB67.3 KiB
www.googletagmanager.com/gtag/js?id=G-0MWMB0GRZF&cx=c&gtm=4e64k1177.5 KiB66.8 KiB
/gtag/destination?id=DC-9897441&l=itm_dl2_1024653&cx=c&gt...129.7 KiB64.3 KiB
www.googletagmanager.com/gtm.js?id=GTM-5X4RL2F&l=itm_dl2_1024653176.2 KiB62.4 KiB
www.googletagmanager.com/gtag/js?id=AW-17543968935&cx=c&gtm=4e64k1137.3 KiB61.2 KiB
www.googletagmanager.com/gtag/js?id=AW-699497906&cx=c&gtm=4e64k1144.4 KiB57.5 KiB
asahi-net.jp/asset/js/app.js86.6 KiB47.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-5N2BLR4190.1 KiB45.5 KiB
/signals/config/1756718828368818?v=2.9.303&r=stable&domai...125.1 KiB34.9 KiB
connect.facebook.net/en_US/fbevents.js96.5 KiB33.9 KiB
cache.dga.jp/s/common_72/i_search_assist_v3_1.js32.8 KiB21.8 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.

CategoryTime Spent
Script Evaluation968 ms
Other768 ms
Style & Layout418 ms
Rendering177 ms
Script Parsing & Compilation158 ms
Garbage Collection67 ms
Parse HTML & CSS20 ms

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 5.5 KiB
URLTransfer SizeEst Savings
ac.fanp.me/ck/3aed840a1186Y609/cookie.js14.1 KiB5.5 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.

URLTransfer Size
asahi-net.jp/asset/fonts/NotoSansJP-Bold.woff2444.2 KiB
asahi-net.jp/asset/fonts/NotoSansJP-Medium.woff2441.6 KiB
asahi-net.jp/asset/fonts/NotoSansJP-Regular.woff2436.6 KiB
asahi-net.jp/asset/img/top/mv-01.jpg392.9 KiB
asahi-net.jp/asset/img/top/recommend-image.png289.9 KiB
tracking.sitest.jp/tag?p=p6940017a28828&u=https%3A%2F%2Fasahi-net.jp%2F265.0 KiB
asahi-net.jp/asset/img/common/campaign/2309357351/bnr-auhikari.png262.7 KiB
asahi-net.jp/asset/img/top/recommend-home-01.jpg245.0 KiB
asahi-net.jp/asset/img/top/recommend-out-01.jpg204.2 KiB
www.googletagmanager.com/gtm.js?id=GTM-5N2BLR4192.7 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.
div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img
div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img
div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img
div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img div.g-col--6 > a.m-tile-button > span.m-tile-button__icon > img
PCや周辺機器の設定・トラブル解決 ul.g-row > li.g-col--12 > a.m-shadow-bnr > img.m-shadow-bnr__image
ASAHIネット Tips Forum　インターネット接続・プロバイダに関する情報発信メディア ul.g-row > li.g-col--12 > a.m-shadow-bnr > img.m-shadow-bnr__image
SPEED TEST　Powered by RBB SPEED TEST ul.g-row > li.g-col--12 > a.m-shadow-bnr > img.m-shadow-bnr__image
IPv6接続確認ページ ul.g-row > li.g-col--12 > a.m-shadow-bnr > img.m-shadow-bnr__image

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

●Max Potential First Input Delay 80 ms
●Optimize DOM size
●Font display
●Modern HTTP
●Optimize viewport for mobile
●Minify CSS
●User Timing marks and measures 10 user timings
●JavaScript execution time 0.7 s
●Avoid long main-thread tasks 6 long tasks found
●Avoid non-composited animations 5 animated elements found
●Network Requests
●Network Round Trip Times 290 ms
●Server Backend Latencies 450 ms
●Tasks
●Diagnostics
●Metrics
●Screenshot Thumbnails
●Final Screenshot
●Script Treemap Data
●Resources Summary
●Initial server response time was short Root document took 20 ms
○INP breakdown
97

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.

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
マイページ div.h-header__inner > div.h-header__utility > div.h-header__tile > a.h-header__tile-button
顧客満足度No.1獲得 section.m-section-lv2--bg-primary > div.m-top-content > div.m-container > h2.m-top-content__heading-1
家で使う ul.m-recommend-tab__row > li.m-recommend-tab__col > button.m-recommend-tab__button > span.m-recommend-tab__button-label

These are opportunities to improve the legibility of your content.

○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
●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
●`[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
●Form elements have associated labels
●`[user-scalable="no"]` is not used in the `<meta name="viewport">` element and the `[maximum-scale]` attribute is not less than 5.
●ARIA attributes are used as specified for the element's role
●`[aria-hidden="true"]` elements do not contain focusable descendents
●Elements use only permitted ARIA attributes
●`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
●Definition list items are wrapped in `<dl>` elements
●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
●Lists contain only `<li>` elements and script supporting elements (`<script>` and `<template>`).
●List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
●No element has a `[tabindex]` value greater than 0
●Touch targets have sufficient size and spacing.
●Heading elements appear in a sequentially-descending order
●Document has a main landmark.
●Deprecated ARIA roles were not used
●Uses ARIA roles only on compatible elements
●Identical links have the same purpose.
●Elements with visible text labels have matching accessible names.
○`[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 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
○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
○The document does not use `<meta http-equiv="refresh">`
○`<object>` elements have alternate text
○Select elements have associated label elements.
○Skip links are focusable.
○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
○`<video>` elements contain a `<track>` element with `[kind="captions"]`
○Tables have different content in the summary attribute and `<caption>`.
○All heading elements contain content.
○Image elements do not have `[alt]` attributes that are redundant text.
○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.
77

Best Practices

General

Deprecated APIs will eventually be removed from the browser. Learn more about deprecated APIs.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Deprecation / WarningSource
Topics
dmp.im-apps.net/js/1024654/0001/itm.js line 8, col 241
AttributionReporting
connect.facebook.net/en_US/fbevents.js line 279, col 769

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.

SourceDescription
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=4DCZE3EGH7&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=&cat=&price=&quantity=&et_optout=false&r=1776899120.7813253&pvid=prhn1jsbirmoanuvpa&su=d2a68edc-8c64-46f5-a61a-e64320a3e9e1&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22macOS%22&platform_version=%2210.15.7%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=4DCZE3EGH7&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=&cat=safivt&price=&quantity=&et_optout=false&r=1776899120.3049207&pvid=prhn1jsbirmoanuvpa&su=d2a68edc-8c64-46f5-a61a-e64320a3e9e1&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22macOS%22&platform_version=%2210.15.7%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=&cat=&price=&quantity=&et_optout=false&r=1776899120.0258&pvid=prhn1jsbirmoanuvpa&su=d2a68edc-8c64-46f5-a61a-e64320a3e9e1&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22macOS%22&platform_version=%2210.15.7%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=&cat=safivt&price=&quantity=&et_optout=false&r=1776899120.6118402&pvid=prhn1jsbirmoanuvpa&su=d2a68edc-8c64-46f5-a61a-e64320a3e9e1&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22macOS%22&platform_version=%2210.15.7%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
asahi-net.jp/
Access to fetch at 'https://apm.yahoo.co.jp/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2F&rref=&pt=&item=i1%2Ci2%2Ci3&cat=%2C%2C&price=%2C%2C&quantity=%2C%2C&et_optout=false&r=1776899120.8140674&pvid=prhn1jsbirmoanuvpa&su=d2a68edc-8c64-46f5-a61a-e64320a3e9e1&__lt__cid_valid=false&_impl=ytag&brands=%22Chromium%22%3B%20v%3D%22147.0.7727.101%22%2C%20%22Not.A%2FBrand%22%3B%20v%3D%228.0.0.0%22&platform=%22macOS%22&platform_version=%2210.15.7%22' from origin 'https://asahi-net.jp' has been blocked by CORS policy: No 'Access-Control-Allow-Origin' header is present on the requested resource.
/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=4DCZE3EGH7&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=W7UTWD28RR&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
/rt/?p=4DCZE3EGH7&label=&ref=https%3A%2F%2Fasahi-net.jp%2...
Failed to load resource: net::ERR_FAILED
●Uses HTTPS
●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
●No issues in the `Issues` panel in Chrome Devtools
●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
100

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.

○Structured data is valid
●Page isn’t blocked from indexing
●Document has a `<title>` element
●Document has a meta description
●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`

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