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Audit Complete

Results for https://ntnu.no

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NO · NOK (kr) · Estimated Applicable regulations: GDPR · ePrivacy Directive · EAA Dev cost: NOK 900/hr How jurisdiction is detected
Spain Spain · Madrid Completed: Apr 22, 2026 20:21 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)
C72

Site Health

Score: 72 / 100

Based on 8 categories, 0 sections

Decent speed, but optimizing further could improve engagement.

Several missing protections leave your users and data exposed.

Several issues make your site difficult for assistive technology users.

Solid SEO basics — a few optimizations could boost rankings.

Solid infrastructure — fast server responses across the board.

Mostly compliant — a few items need attention.

Missing metadata means poor previews on social media and search.

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

CMS · 1310 peers
You 72
·
Avg 73
At average
0 50 100
Better than 23% of CMS sites
Framework · 1225 peers
You 72
·
Avg 74
At average
0 50 100
Better than 24% of Framework sites

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

1 button(s) with no accessible text

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

Accessibility › Link & Button Quality
5

1 control(s) without accessible label

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

Accessibility › Form Accessibility
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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What fixing these means

Your site performs reasonably well, but a few targeted fixes could meaningfully improve results. 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.
2 accessibility issues exclude users who rely on assistive technology.

Conversion Barriers

2 critical 7 warning

9 barrier(s) likely increasing bounce by ~31%.

Speed (2)

Page takes 22.9s to load

+12% bounce

Users abandon at ~3s — you're 20.4s over the 2.5s threshold

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

Page feels frozen for 933ms

+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)

1 form field(s) without a label

+2% bounce

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

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

Content (2)

No Open Graph tags

+2% bounce

Links shared on LinkedIn / Slack / Facebook show bare URLs — referral clicks drop

Fix: Add og:title, og:description, og:image, og:url to the page head

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, …)

Navigation (2)

No skip-to-content link

+1% bounce

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

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

2 broken link(s) on the page

+3% bounce

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

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

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

Return on Investment

NOK 4,050 investment → NOK 9.27/month returns + EUR 120,500,000 risk avoided

Payback period: > 2 years First-year ROI: -97%

Investment

NOK 4,050

4h · 5 findings

Monthly returns

NOK 9.27 /mo

~NOK 111 / year

  • Bandwidth savings NOK 9.27

Regulatory risk avoided

EUR 120,500,000

if kept compliant

  • ePrivacy Directive EUR 100,000,000
  • GDPR EUR 20,000,000
  • EAA EUR 500,000

NOK 1,350 — 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

kr4,050

4.5 developer hours at kr900/hr

Based on Norway rates (kr900/hr)

Quick wins
kr1,350 3 fixes in ~90 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
kr /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

NOK 10,041,676 / month at risk

~NOK 120,500,111 / year if left unfixed

Compliance Risk

€120,500,000

ePrivacy DirectiveGDPREAA
  • No privacy policy link detected
    GDPR: EUR 10,000 – EUR 20,000,000
  • Trackers detected but no cookie policy found
    GDPR: EUR 5,000 – EUR 10,000,000
  • Trackers detected but no cookie policy found
    GDPR: EUR 10,000 – EUR 20,000,000

+7 more

Bandwidth Waste

NOK 9.27 /mo

10773.1 MB/mo × 0.860 NOK/GB

  • Optimize transfer: save ~1.1 MB per page load
    Saves NOK 9.27/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 5 critical issues to capture this value

How this is calculated

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

Your site's LCP: → estimated after fixes.

These are estimates based on industry research — actual results vary

Bounce-rate model & assumptions

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

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Lighthouse Scores

Industry-standard audits powered by Google Lighthouse.

32
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
100
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

9.61 s

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

22.91 s

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

933 ms

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

0.096

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

11.47 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.

23.38 s

Detailed Report

Audit breakdown by category with detailed findings.

32

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.

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.clearfix > div.card-grid > a.card-grid-card > img.img div.clearfix > div.card-grid > a.card-grid-card > img.img
/documents/1289651112/1308286184/s_effekt_1100_550.jpg/44...492.8 KiB479.0 KiB
Bilde av forsker som har samlet reinsdyrbæsj div.clearfix > div.card-grid > a.card-grid-card > img.img
/documents/1289651112/1308286184/malin-andersson-stavridi...275.0 KiB261.2 KiB
Studenter foran NTNUs hovedbygg i Trondheim div.clearfix > figure.mb-0 > picture > img.h-100
/o/adaptive-media/image/1377145565/Preview-1000x0/studies...302.1 KiB260.6 KiB
Tre personer ser på et skjelett div.clearfix > article.row > div.col-12 > img
/documents/10137/0/vimu-DSCF3725-forside.jpg/9166cd17-c34...190.1 KiB174.4 KiB
Fire studenter på biblioteket div.clearfix > article.row > div.col-12 > img
/documents/10137/0/NTNU_Studentrekruttering_BERREDSCF9123...130.8 KiB115.0 KiB
Fem mennesker på scene. Paneldiskusjon om kunstig intelligens. div.clearfix > div.card-grid > a.card-grid-card > img.img
/documents/1289651112/1308286184/ntnu-kveld_ai-2726_53333...95.3 KiB79.2 KiB
Ung mann sitter ved en pendel i bevegelse i Realfagbygget på NTNU-campus på Glø… div.clearfix > div.card-grid > a.card-grid-card > img.img
/documents/1289651112/1308286184/image-1-2048x1366.jpeg/2...93.6 KiB78.4 KiB
Studenter som sitter rundt et bord og prater div.clearfix > article.row > div.col-12 > img
/documents/1289651112/1391671168/NTNU_Studentrekruttering...84.7 KiB76.7 KiB
div.sc-fYdXmo > button.sc-hjsqBW > div.sc-oQLfz > img.sc-gUrTyB div.sc-fYdXmo > button.sc-hjsqBW > div.sc-oQLfz > img.sc-gUrTyB
/media/chatbubble-images/6d899ed855c242a8917e78af20f3716d...10.2 KiB10.0 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:407.539 label:Time to first byte subpart:timeToFirstByte] map[duration:55.561 label:Resource load delay subpart:resourceLoadDelay] map[duration:596.549 label:Resource load duration subpart:resourceLoadDuration] map[duration:1511.878 label:Element render delay subpart:elementRenderDelay]]
lhId: page-2-IMG
nodeLabel: Studenter foran NTNUs hovedbygg i Trondheim
path: 1,HTML,1,BODY,1,DIV,1,SECTION,1,MAIN,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,1,FIGURE,1,PICTURE,2,IMG
selector: div.clearfix > figure.mb-0 > picture > img.h-100
snippet: <img alt="Studenter foran NTNUs hovedbygg i Trondheim" class="h-100 w-100" data-fileentryid="1377145565" src="https://www.ntnu.no/o/adaptive-media/image/1377145565/Preview-1000x0/studi…" style="object-fit:cover;">

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-2-IMG
nodeLabel: Studenter foran NTNUs hovedbygg i Trondheim
path: 1,HTML,1,BODY,1,DIV,1,SECTION,1,MAIN,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,1,FIGURE,1,PICTURE,2,IMG
selector: div.clearfix > figure.mb-0 > picture > img.h-100
snippet: <img alt="Studenter foran NTNUs hovedbygg i Trondheim" class="h-100 w-100" data-fileentryid="1377145565" src="https://www.ntnu.no/o/adaptive-media/image/1377145565/Preview-1000x0/studi…" style="object-fit:cover;">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
www.ntnu.no/http/1.1
www.ntnu.no/o/frontend-js-lodash-web/lodash/lodash.jshttp/1.1
www.ntnu.no/o/frontend-js-lodash-web/lodash/util.jshttp/1.1
/o/ntnu-theme/css/clay.css?browserId=other&themeId=ntnuth...http/1.1
/o/frontend-css-web/main.css?browserId=other&themeId=ntnu...http/1.1
/combo?browserId=other&minifierType=&themeId=ntnutheme_WA...http/1.1
www.ntnu.no/o/js_loader_modules?t=1776870929928http/1.1
www.ntnu.no/o/js_loader_config?t=1776870930203http/1.1
/combo?browserId=other&minifierType=js&languageId=nb_NO&b...http/1.1
/combo?browserId=other&minifierType=js&languageId=nb_NO&b...http/1.1
/combo?browserId=other&minifierType=js&languageId=nb_NO&b...http/1.1
www.ntnu.no/o/frontend-js-web/loader/config.jshttp/1.1
www.ntnu.no/o/frontend-js-web/loader/loader.3.jshttp/1.1
www.ntnu.no/o/js_bundle_config?t=1776870963084http/1.1
/o/ntnu-theme/css/main.css?browserId=other&themeId=ntnuth...http/1.1
/combo?browserId=other&minifierType=css&languageId=nb_NO&...http/1.1
/combo?browserId=other&minifierType=js&languageId=nb_NO&b...http/1.1
www.ntnu.no/o/ntnu-theme/images/ntnu-logo-web-v1.svghttp/1.1
/o/adaptive-media/image/1377145565/Preview-1000x0/studies...http/1.1
/o/adaptive-media/image/1377145553/Preview-1000x0/studies...http/1.1
/documents/1289651112/1391671168/NTNU_Studentrekruttering...http/1.1
/documents/1289651112/1308286184/ntnu-kveld_ai-2726_53333...http/1.1
/documents/1289651112/1308286184/image-1-2048x1366.jpeg/2...http/1.1
/documents/1289651112/1308286184/malin-andersson-stavridi...http/1.1
/documents/1289651112/1308286184/s_effekt_1100_550.jpg/44...http/1.1
/documents/10137/0/NTNU_Studentrekruttering_BERREDSCF9123...http/1.1
/documents/10137/0/vimu-DSCF3725-forside.jpg/9166cd17-c34...http/1.1
www.ntnu.no/o/ntnu-theme/images/logo_ntnu_tag_norsk.svghttp/1.1
/o/ntnu-theme/js/main.js?browserId=other&minifierType=js&...http/1.1
www.ntnu.no/o/ntnu-theme/js/jquery.tablesorter.jshttp/1.1
www.ntnu.no/o/ntnu-theme/js/jquery.slider.js?v=4.2.17http/1.1
www.ntnu.no/o/ntnu-theme/images/lexicon/icons.svghttp/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
www.ntnu.no/o/ntnu-theme/webfonts/fa-solid-900.woff2http/1.1
www.ntnu.no/o/ntnu-theme/webfonts/fa-light-300.woff2http/1.1
www.ntnu.no/o/ntnu-theme/webfonts/fa-brands-400.woff2http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/o/frontend-js-web/liferay/available_languages.jsp?browse...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
www.ntnu.no/o/ntnu-theme/images/logoicon.icohttp/1.1

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates

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: 916 ms
URLTime Spent
ntnu.no/916 ms
www.ntnu.no/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

Minifying 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: 800 ms 84.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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.

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 Evaluation1.8 s
Other586 ms
Script Parsing & Compilation442 ms
Style & Layout417 ms
Parse HTML & CSS144 ms
Garbage Collection109 ms
Rendering45 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Studenter foran NTNUs hovedbygg i Trondheim div.clearfix > figure.mb-0 > picture > img.h-100
/o/adaptive-media/image/1377145565/Preview-1000x0/studies...
NTNU logo footer#blue-footer > div.container > div.end > img.ntnu-logo
www.ntnu.no/o/ntnu-theme/images/logo_ntnu_tag_norsk.svg

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

Layout shift culprits
Optimize DOM size
Forced reflow
Optimize viewport for mobile
Minify CSS
Avoid long main-thread tasks 15 long tasks found
Network Requests
Network Round Trip Times 60 ms
Server Backend Latencies 20 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 110 ms
Avoid large layout shifts 1 layout shift found
INP breakdown
User Timing marks and measures
Avoid non-composited animations
100

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.

Visible text labels that do not match the accessible name can result in a confusing experience for screen reader users. Learn more about accessible names.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Meny div#navigation > div.container > div.navbar-buttons > button#nav-toggle-btn
Interactive controls are keyboard focusable
Interactive elements indicate their purpose and state
The page has a logical tab order
Visual order on the page follows DOM order
User focus is not accidentally trapped in a region
The user's focus is directed to new content added to the page
HTML5 landmark elements are used to improve navigation
Offscreen content is hidden from assistive technology
Custom controls have associated labels
Custom controls have ARIA roles
`[aria-*]` attributes match their roles
`[aria-hidden="true"]` is not present on the document `<body>`
`[role]`s have all required `[aria-*]` attributes
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Buttons have an accessible name
Image elements have `[alt]` attributes
`[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
Background and foreground colors have a sufficient contrast ratio
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
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
Touch targets have sufficient size and spacing.
`[lang]` attributes have a valid value
Heading elements appear in a sequentially-descending order
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
Image elements do not have `[alt]` attributes that are redundant text.
`[accesskey]` values are unique
`button`, `link`, and `menuitem` elements have accessible names
Elements with `role="dialog"` or `role="alertdialog"` have accessible names.
ARIA input fields have accessible names
ARIA `meter` elements have accessible names
ARIA `progressbar` elements have accessible names
Elements with an ARIA `[role]` that require children to contain a specific `[role]` have all required children.
`[role]`s are contained by their required parent element
Elements with the `role=text` attribute do not have focusable descendents.
ARIA toggle fields have accessible names
ARIA `tooltip` elements have accessible names
ARIA `treeitem` elements have accessible names
The page contains a heading, skip link, or landmark region
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<frame>` or `<iframe>` elements have a title
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
Form elements have associated labels
Links are distinguishable without relying on color.
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
No element has a `[tabindex]` value greater than 0
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
Identical links have the same purpose.
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.
100

Best Practices

General

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uses HTTPS
Avoids deprecated APIs
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No browser errors logged to the console
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
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
92

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.

Crawling and Indexing

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Line #ContentError
62Disallow /blogger/Syntax not understood
63Allow /blogger/guide/Syntax not understood
64Allow /blogger/ub-adbbm/Syntax not understood
65Allow /blogger/ub-arkeologi/Syntax not understood
66Allow /blogger/ub-lokalhistorie/Syntax not understood
67Allow /blogger/ub-realfag/Syntax not understood
68Allow /blogger/ub-teknologi/Syntax not understood
69Allow /blogger/ub-okonomi/Syntax not understood
70Allow /blogger/ub-samfunn/Syntax not understood
71Allow /blogger/ub-musikk/Syntax not understood
72Allow /blogger/ub-filosofi/Syntax not understood
73Allow /blogger/ub-kunstogmedier/Syntax not understood
74Allow /blogger/ub-litteratur/Syntax not understood
75Allow /blogger/ub-mh/Syntax not understood
76Allow /blogger/ls/Syntax not understood
77Allow /blogger/elsa/Syntax not understood
78Allow /blogger/medialab/Syntax not understood
79Allow /blogger/andersarvesen/Syntax not understood
80Allow /blogger/reset/Syntax not understood
81Allow /blogger/ub-spesialsamlinger/Syntax not understood
82Allow /blogger/healthpromotion/Syntax not understood
83Allow /blogger/ub-ark4/Syntax not understood
84Allow /blogger/forsklab-universell-utforming/Syntax not understood
85Allow /blogger/ub-bibliometri/Syntax not understood
86Allow /blogger/lor-ved-ntnu/Syntax not understood
87Allow /blogger/the-materialities-of-the-modern-breakthrough/Syntax not understood
88Allow /blogger/monica-rolfsen/Syntax not understood
89Allow /blogger/ole-bjorn-roste/Syntax not understood
90Allow /blogger/hunt/Syntax not understood
91Allow /blogger/teamntnu/Syntax not understood
92Allow /blogger/sekom/Syntax not understood
93Allow /blogger/allmennmedisin/Syntax not understood
94Allow /blogger/norpart/Syntax not understood
95Allow /blogger/fysikkforfakirer/Syntax not understood
96Allow /blogger/cpslab/Syntax not understood
97Allow /blogger/link/Syntax not understood
98Allow /blogger/humsam/Syntax not understood
99Allow /blogger/came/Syntax not understood
100Allow /blogger/nakensnegler/Syntax not understood
101Allow /blogger/realsocialmedia/Syntax not understood
102Allow /blogger/folkehelsebloggen/Syntax not understood
103Allow /blogger/teknat/Syntax not understood
104Allow /blogger/menneskets-tidsalder/Syntax not understood
105Allow /blogger/ingrid-schjolberg-ie/Syntax not understood
106Allow /blogger/richard-hann/Syntax not understood
107Allow /blogger/konpas/Syntax not understood
108Allow /blogger/consense/Syntax not understood
109Allow /blogger/afino/Syntax not understood
110Allow /blogger/lkb/Syntax not understood
111Allow /blogger/helse/Syntax not understood
112Allow /blogger/realfag/Syntax not understood
113Allow /blogger/uavicing/Syntax not understood
114Allow /blogger/ihb/Syntax not understood
115Allow /blogger/most/Syntax not understood
116Allow /blogger/iik-edu/Syntax not understood
117Allow /blogger/cius/Syntax not understood
118Allow /blogger/literaturogsamfunn/Syntax not understood
119Allow /blogger/arkitektur5/Syntax not understood
120Allow /blogger/omsorgsforskning/Syntax not understood
121Allow /blogger/iap/Syntax not understood
122Allow /blogger/fagkomblogg/Syntax not understood
123Allow /blogger/sprakstotte/Syntax not understood
124Allow /blogger/eladda/Syntax not understood
125Allow /blogger/unikup/Syntax not understood
126Allow /blogger/lotteryfantasy/Syntax not understood
127Allow /blogger/talkinnovation/Syntax not understood

To appear in search results, crawlers need access to your app.

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
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

70
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
92
Accessibility Measures how accessible the page is for users with disabilities. Checks color contrast, ARIA labels, and semantic HTML.
100
Best Practices Checks for modern web development best practices including HTTPS, no console errors, and secure JavaScript.
92
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.

2.07 s

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

3.37 s

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

22 ms

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

0.001

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

2.07 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.

4.05 s

Detailed Report

Audit breakdown by category with detailed findings.

70

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.

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.

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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.clearfix > div.card-grid > a.card-grid-card > img.img div.clearfix > div.card-grid > a.card-grid-card > img.img
/documents/1289651112/1308286184/s_effekt_1100_550.jpg/44...492.8 KiB484.3 KiB
Studenter foran NTNUs hovedbygg i Trondheim div.clearfix > figure.mb-0 > picture > img.h-100
/documents/10137/8737969/studiestart2025-foto-erik-betsha...554.1 KiB356.4 KiB
Bilde av forsker som har samlet reinsdyrbæsj div.clearfix > div.card-grid > a.card-grid-card > img.img
/documents/1289651112/1308286184/malin-andersson-stavridi...275.0 KiB266.5 KiB
Tre personer ser på et skjelett div.clearfix > article.row > div.col-12 > img
/documents/10137/0/vimu-DSCF3725-forside.jpg/9166cd17-c34...190.1 KiB180.1 KiB
Fire studenter på biblioteket div.clearfix > article.row > div.col-12 > img
/documents/10137/0/NTNU_Studentrekruttering_BERREDSCF9123...130.8 KiB118.0 KiB
Fem mennesker på scene. Paneldiskusjon om kunstig intelligens. div.clearfix > div.card-grid > a.card-grid-card > img.img
/documents/1289651112/1308286184/ntnu-kveld_ai-2726_53333...95.3 KiB84.8 KiB
Ung mann sitter ved en pendel i bevegelse i Realfagbygget på NTNU-campus på Glø… div.clearfix > div.card-grid > a.card-grid-card > img.img
/documents/1289651112/1308286184/image-1-2048x1366.jpeg/2...93.6 KiB84.0 KiB
Studenter som sitter rundt et bord og prater div.clearfix > article.row > div.col-12 > img
/documents/1289651112/1391671168/NTNU_Studentrekruttering...84.7 KiB63.4 KiB
div.sc-fYdXmo > button.sc-hjsqBW > div.sc-oQLfz > img.sc-gUrTyB div.sc-fYdXmo > button.sc-hjsqBW > div.sc-oQLfz > img.sc-gUrTyB
/media/chatbubble-images/6d899ed855c242a8917e78af20f3716d...10.2 KiB9.9 KiB

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-1-IMG
nodeLabel: Studenter foran NTNUs hovedbygg i Trondheim
path: 1,HTML,1,BODY,1,DIV,1,SECTION,1,MAIN,0,DIV,0,DIV,0,DIV,0,DIV,1,SECTION,0,DIV,1,DIV,0,DIV,1,DIV,2,FIGURE,1,PICTURE,2,IMG
selector: div.clearfix > figure.mb-0 > picture > img.h-100
snippet: <img alt="Studenter foran NTNUs hovedbygg i Trondheim" class="h-100 w-100" data-fileentryid="1377145553" src="/documents/10137/8737969/studiestart2025-foto-erik-betshammar-dt1800.jpg/5…" style="object-fit:cover;object-position:center;max-width:2250px;">

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URLProtocol
www.ntnu.no/http/1.1
www.ntnu.no/o/frontend-js-lodash-web/lodash/lodash.jshttp/1.1
www.ntnu.no/o/frontend-js-lodash-web/lodash/util.jshttp/1.1
/o/ntnu-theme/css/clay.css?browserId=other&themeId=ntnuth...http/1.1
/o/frontend-css-web/main.css?browserId=other&themeId=ntnu...http/1.1
/combo?browserId=other&minifierType=&themeId=ntnutheme_WA...http/1.1
www.ntnu.no/o/js_loader_modules?t=1776871995145http/1.1
www.ntnu.no/o/js_loader_config?t=1776871995412http/1.1
/combo?browserId=other&minifierType=js&languageId=nb_NO&b...http/1.1
/combo?browserId=other&minifierType=js&languageId=nb_NO&b...http/1.1
/combo?browserId=other&minifierType=js&languageId=nb_NO&b...http/1.1
www.ntnu.no/o/frontend-js-web/loader/config.jshttp/1.1
www.ntnu.no/o/frontend-js-web/loader/loader.3.jshttp/1.1
www.ntnu.no/o/js_bundle_config?t=1776872028683http/1.1
/o/ntnu-theme/css/main.css?browserId=other&themeId=ntnuth...http/1.1
/combo?browserId=other&minifierType=css&languageId=nb_NO&...http/1.1
/combo?browserId=other&minifierType=js&languageId=nb_NO&b...http/1.1
www.ntnu.no/o/ntnu-theme/images/ntnu-logo-web-v1.svghttp/1.1
/documents/10137/8737969/studiestart2025-foto-erik-betsha...http/1.1
/documents/10137/8737969/studiestart2025-foto-erik-betsha...http/1.1
/documents/1289651112/1391671168/NTNU_Studentrekruttering...http/1.1
/documents/1289651112/1308286184/ntnu-kveld_ai-2726_53333...http/1.1
/documents/1289651112/1308286184/image-1-2048x1366.jpeg/2...http/1.1
/documents/1289651112/1308286184/malin-andersson-stavridi...http/1.1
/documents/1289651112/1308286184/s_effekt_1100_550.jpg/44...http/1.1
/documents/10137/0/NTNU_Studentrekruttering_BERREDSCF9123...http/1.1
/documents/10137/0/vimu-DSCF3725-forside.jpg/9166cd17-c34...http/1.1
www.ntnu.no/o/ntnu-theme/images/logo_ntnu_tag_norsk.svghttp/1.1
/o/ntnu-theme/js/main.js?browserId=other&minifierType=js&...http/1.1
www.ntnu.no/o/ntnu-theme/js/jquery.tablesorter.jshttp/1.1
www.ntnu.no/o/ntnu-theme/js/jquery.slider.js?v=4.2.17http/1.1
www.ntnu.no/o/ntnu-theme/images/lexicon/icons.svghttp/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
www.ntnu.no/o/ntnu-theme/webfonts/fa-light-300.woff2http/1.1
www.ntnu.no/o/ntnu-theme/webfonts/fa-brands-400.woff2http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/o/frontend-js-web/liferay/available_languages.jsp?browse...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
/combo/?browserId=other&minifierType=&languageId=nb_NO&b=...http/1.1
www.ntnu.no/o/ntnu-theme/images/logoicon.icohttp/1.1

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

description: [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints help the browser establish a connection earlier in the page load, saving time when the first request for that origin is made. The following are the origins that the page preconnected to.
title: Preconnected origins
value: no origins were preconnected
description: Add [preconnect](https://developer.chrome.com/docs/lighthouse/performance/uses-rel-preconnect/) hints to your most important origins, but try to use no more than 4.
title: Preconnect candidates
value: No additional origins are good candidates for preconnecting

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: 359 ms
URLTime Spent
ntnu.no/359 ms
www.ntnu.no/0.0 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

Diagnostics

Minifying 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 84.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
Studenter foran NTNUs hovedbygg i Trondheim div.clearfix > figure.mb-0 > picture > img.h-100
/documents/10137/8737969/studiestart2025-foto-erik-betsha...
NTNU logo footer#blue-footer > div.container > div.end > img.ntnu-logo
www.ntnu.no/o/ntnu-theme/images/logo_ntnu_tag_norsk.svg

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

Max Potential First Input Delay 80 ms
Layout shift culprits
Optimize DOM size
Forced reflow
LCP breakdown
Optimize viewport for mobile
Minify CSS
JavaScript execution time 0.4 s
Minimizes main-thread work 0.8 s
Avoid long main-thread tasks 3 long tasks found
Network Requests
Network Round Trip Times 60 ms
Server Backend Latencies 20 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Initial server response time was short Root document took 120 ms
Avoid large layout shifts 2 layout shifts found
INP breakdown
User Timing marks and measures
Avoid non-composited animations
92

Accessibility

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

ARIA

Each ARIA `role` supports a specific subset of `aria-*` attributes. Mismatching these invalidates the `aria-*` attributes. Learn how to match ARIA attributes to their roles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Studier Studentliv Forskning og innovasjon Om NTNU header#banner > div#navigation > div.container > div#navigationCollapse
Søk header#banner > div#navigation > div.container > div#searchCollapse

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

Tables and lists

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
For ansatte | For studenter | Innsida | Blackboard footer#blue-footer > div.container > div > ul.horizontal-list

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

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-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
Background and foreground colors have a sufficient contrast ratio
Document has a `<title>` element
`<html>` element has a `[lang]` attribute
`<html>` element has a valid value for its `[lang]` attribute
Links have a discernible name
List items (`<li>`) are contained within `<ul>`, `<ol>` or `<menu>` parent elements
Touch targets have sufficient size and spacing.
`[lang]` attributes have a valid value
Heading elements appear in a sequentially-descending order
Skip links are focusable.
Document has a main landmark.
Deprecated ARIA roles were not used
Image elements do not have `[alt]` attributes that are redundant text.
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
`<dl>`'s contain only properly-ordered `<dt>` and `<dd>` groups, `<script>`, `<template>` or `<div>` elements.
Definition list items are wrapped in `<dl>` elements
ARIA IDs are unique
No form fields have multiple labels
`<frame>` or `<iframe>` elements have a title
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
Input buttons have discernible text.
`<input type="image">` elements have `[alt]` text
Links are distinguishable without relying on color.
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
Select elements have associated label elements.
No element has a `[tabindex]` value greater than 0
Cells in a `<table>` element that use the `[headers]` attribute refer to table cells within the same table.
`<th>` elements and elements with `[role="columnheader"/"rowheader"]` have data cells they describe.
`<video>` elements contain a `<track>` element with `[kind="captions"]`
Tables have different content in the summary attribute and `<caption>`.
All heading elements contain content.
Uses ARIA roles only on compatible elements
Identical links have the same purpose.
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.
100

Best Practices

General

Source maps translate minified code to the original source code. This helps developers debug in production. In addition, Lighthouse is able to provide further insights. Consider deploying source maps to take advantage of these benefits. Learn more about source maps.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Uses HTTPS
Avoids deprecated APIs
Avoids third-party cookies
Allows users to paste into input fields
Avoids requesting the geolocation permission on page load
Avoids requesting the notification permission on page load
Displays images with correct aspect ratio
Serves images with appropriate resolution
Page has the HTML doctype
Properly defines charset
No browser errors logged to the console
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
Redirects HTTP traffic to HTTPS
Mitigate clickjacking with XFO or CSP
92

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.

Crawling and Indexing

If your robots.txt file is malformed, crawlers may not be able to understand how you want your website to be crawled or indexed. Learn more about robots.txt.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Line #ContentError
62Disallow /blogger/Syntax not understood
63Allow /blogger/guide/Syntax not understood
64Allow /blogger/ub-adbbm/Syntax not understood
65Allow /blogger/ub-arkeologi/Syntax not understood
66Allow /blogger/ub-lokalhistorie/Syntax not understood
67Allow /blogger/ub-realfag/Syntax not understood
68Allow /blogger/ub-teknologi/Syntax not understood
69Allow /blogger/ub-okonomi/Syntax not understood
70Allow /blogger/ub-samfunn/Syntax not understood
71Allow /blogger/ub-musikk/Syntax not understood
72Allow /blogger/ub-filosofi/Syntax not understood
73Allow /blogger/ub-kunstogmedier/Syntax not understood
74Allow /blogger/ub-litteratur/Syntax not understood
75Allow /blogger/ub-mh/Syntax not understood
76Allow /blogger/ls/Syntax not understood
77Allow /blogger/elsa/Syntax not understood
78Allow /blogger/medialab/Syntax not understood
79Allow /blogger/andersarvesen/Syntax not understood
80Allow /blogger/reset/Syntax not understood
81Allow /blogger/ub-spesialsamlinger/Syntax not understood
82Allow /blogger/healthpromotion/Syntax not understood
83Allow /blogger/ub-ark4/Syntax not understood
84Allow /blogger/forsklab-universell-utforming/Syntax not understood
85Allow /blogger/ub-bibliometri/Syntax not understood
86Allow /blogger/lor-ved-ntnu/Syntax not understood
87Allow /blogger/the-materialities-of-the-modern-breakthrough/Syntax not understood
88Allow /blogger/monica-rolfsen/Syntax not understood
89Allow /blogger/ole-bjorn-roste/Syntax not understood
90Allow /blogger/hunt/Syntax not understood
91Allow /blogger/teamntnu/Syntax not understood
92Allow /blogger/sekom/Syntax not understood
93Allow /blogger/allmennmedisin/Syntax not understood
94Allow /blogger/norpart/Syntax not understood
95Allow /blogger/fysikkforfakirer/Syntax not understood
96Allow /blogger/cpslab/Syntax not understood
97Allow /blogger/link/Syntax not understood
98Allow /blogger/humsam/Syntax not understood
99Allow /blogger/came/Syntax not understood
100Allow /blogger/nakensnegler/Syntax not understood
101Allow /blogger/realsocialmedia/Syntax not understood
102Allow /blogger/folkehelsebloggen/Syntax not understood
103Allow /blogger/teknat/Syntax not understood
104Allow /blogger/menneskets-tidsalder/Syntax not understood
105Allow /blogger/ingrid-schjolberg-ie/Syntax not understood
106Allow /blogger/richard-hann/Syntax not understood
107Allow /blogger/konpas/Syntax not understood
108Allow /blogger/consense/Syntax not understood
109Allow /blogger/afino/Syntax not understood
110Allow /blogger/lkb/Syntax not understood
111Allow /blogger/helse/Syntax not understood
112Allow /blogger/realfag/Syntax not understood
113Allow /blogger/uavicing/Syntax not understood
114Allow /blogger/ihb/Syntax not understood
115Allow /blogger/most/Syntax not understood
116Allow /blogger/iik-edu/Syntax not understood
117Allow /blogger/cius/Syntax not understood
118Allow /blogger/literaturogsamfunn/Syntax not understood
119Allow /blogger/arkitektur5/Syntax not understood
120Allow /blogger/omsorgsforskning/Syntax not understood
121Allow /blogger/iap/Syntax not understood
122Allow /blogger/fagkomblogg/Syntax not understood
123Allow /blogger/sprakstotte/Syntax not understood
124Allow /blogger/eladda/Syntax not understood
125Allow /blogger/unikup/Syntax not understood
126Allow /blogger/lotteryfantasy/Syntax not understood
127Allow /blogger/talkinnovation/Syntax not understood

To appear in search results, crawlers need access to your app.

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
Image elements have `[alt]` attributes
Document has a valid `hreflang`
Document has a valid `rel=canonical`

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