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Audit Complete

Results for https://uct.ac.za

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ZA · ZAR (R) · Estimated Applicable regulations: POPIA Dev cost: ZAR 650/hr How jurisdiction is detected
Spain Spain · Madrid Completed: Apr 22, 2026 21:44 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)
D69

Site Health

Score: 69 / 100

Based on 8 categories, 0 sections

Room to improve — your 9.1s 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.

Good server performance with room for optimization.

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

Drupal · 358 peers
You 69
·
Avg 73
At average
0 50 100
Better than 2% of Drupal sites See full Drupal benchmark →
Bulma · 340 peers
You 69
·
Avg 74
At average
0 50 100
Better than 4% of Bulma sites See full Bulma 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

Cookie 'DB_OPTION' is missing the Secure flag

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

Security › Cookie Security
3

Cookie 'uct_ui_cookie_warning' is missing the Secure flag

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

Security › Cookie Security
4

HSTS header is missing

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

Security › Security Headers
5

No Content-Security-Policy header found

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

Security › Content Security Policy
View fix priority matrix

Fix Priority Matrix

5 findings

Quick Wins

5

High impact, low effort — start here.

Strategic

0

High impact, requires investment.

Nothing in this quadrant — good news.

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 has several issues that may be affecting user experience and business outcomes. Addressing the critical issues below would have the most immediate impact on your user trust.

5 security gaps detected — browsers may warn visitors about your site.
C
Could reach Estimate based on resolving critical issues

Conversion Barriers

3 critical 7 warning

10 barrier(s) likely increasing bounce by ~34%.

Speed (2)

Page takes 9.1s to load

+12% bounce

Users abandon at ~3s — you're 6.6s over the 2.5s threshold

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

Page feels frozen for 2.3s

+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)

3 form field(s) without a label

+6% 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 (3)

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, …)

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)

16 link(s) with generic text ("click here", "read more")

+1% bounce

Screen-reader users navigating by link list see no context — and search engines can't infer relevance

Fix: Rewrite with descriptive phrases that identify the destination

1 broken link(s) on the page

+2% 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

ZAR 1,625 investment → ZAR 36,688/month returns + ZAR 10,000,000 risk avoided

Payback period: < 1 month First-year ROI: +26993%

Investment

ZAR 1,625

2h · 5 findings

Monthly returns

ZAR 36,688 /mo

~ZAR 440,261 / year

  • Conversions recovered ZAR 36,642
  • Bandwidth savings ZAR 46

Regulatory risk avoided

ZAR 10,000,000

if kept compliant

  • POPIA ZAR 10,000,000

Payback period

0 12mo 24mo

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

R1,625

2.5 developer hours at R650/hr

Based on South Africa rates (R650/hr)

Quick wins
R1,625 5 fixes in ~150 minutes

Start here for the best return on investment

Cost by category

Cost by effort level

Adjust assumptions
R /hr

Rates reflect fully-loaded developer cost including overhead

How developer rates are sourced

What Inaction Is Costing You

ZAR 833,380 / month at risk

~ZAR 10,000,556 / year if left unfixed

Compliance Risk

ZAR 10,000,000

POPIA
  • No privacy policy link detected
    POPIA: ZAR 10,000 – ZAR 10,000,000
  • Trackers detected but no cookie policy found
    POPIA: ZAR 10,000 – ZAR 10,000,000
  • Trackers detected but no privacy policy found
    POPIA: ZAR 10,000 – ZAR 10,000,000

+1 more

Bandwidth Waste

ZAR 46 /mo

31854.2 MB/mo × 1.455 ZAR/GB

  • Optimize transfer: save ~3.2 MB per page load
    Saves ZAR 46/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.

27
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
89
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.

4.30 s

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

9.06 s

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

2.32 s

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

0.082

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

15.60 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.

52.13 s

Detailed Report

Audit breakdown by category with detailed findings.

27

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
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms579.8 KiB
/cache/images/userfiles/images/news/videos/2025/09/975x52...0.0 ms402.0 KiB
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms393.7 KiB
/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms374.9 KiB
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms341.3 KiB
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms325.6 KiB
/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms293.8 KiB
/cache/images/userfiles/images/news/videos/2026/975x520/f...0.0 ms292.7 KiB
/cache/images/userfiles/images/news/videos/2026/975x520/f...0.0 ms243.4 KiB
/cache/images/userfiles/images/news/videos/2025/11/975x52...0.0 ms223.7 KiB
/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms221.0 KiB
/cache/images/userfiles/images/news/videos/2026/975x520/f...0.0 ms219.4 KiB
/cache/images/userfiles/images/news/videos/2026/975x520/f...0.0 ms160.8 KiB
/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms140.1 KiB
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms77.4 KiB
/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms65.3 KiB
i.ytimg.com/vi/0IldrY2Gkn0/sddefault.jpg7200.0 s69.6 KiB
i.ytimg.com/vi/RbSJqfAT2w8/sddefault.jpg7200.0 s67.8 KiB
i.ytimg.com/vi/SJp1SdEJzvY/sddefault.jpg7200.0 s67.0 KiB
i.ytimg.com/vi/e7x2kfkFIvM/sddefault.jpg7200.0 s63.3 KiB
i.ytimg.com/vi/9imtfIo0gkE/sddefault.jpg7200.0 s58.1 KiB
i.ytimg.com/vi/qdeh_zeiGbI/sddefault.jpg7200.0 s57.8 KiB
i.ytimg.com/vi/E9dq9ei5YxU/sddefault.jpg7200.0 s56.2 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s311.7 KiB
www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.js0.0 ms30.0 KiB
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms25.3 KiB
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Bold.woff0.0 ms25.2 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
/cache/images/userfiles/images/news/2025/11/100x100/focus...0.0 ms14.1 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s132.3 KiB
/cache/images/userfiles/images/researchoffice/2026/03_Mar...0.0 ms10.5 KiB
www.news.uct.ac.za/scripts/jquery/jquery-migrate-3.5.2.js0.0 ms10.4 KiB
/sites/default/files/styles/one_hundred_percent/public/me...1209600.0 s100.2 KiB
/cache/images/userfiles/images/news/2026/01/100x100/focus...0.0 ms9.3 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s90.6 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s84.9 KiB
/cache/images/userfiles/images/news/2025/12/100x100/focus...0.0 ms8.3 KiB
/chattabotz-connect-main/UCT ICON-min.png0.0 ms7.4 KiB
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...0.0 ms6.0 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s59.9 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s56.7 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s55.4 KiB
/sites/default/files/styles/one_hundred_percent/public/me...1209600.0 s50.7 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s40.4 KiB
uct.ac.za/themes/custom/blip_uct/logo.svg1209600.0 s30.0 KiB
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...0.0 ms2.8 KiB
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...0.0 ms1.7 KiB
www.news.uct.ac.za/cache/images/975x520/crop_to_fit/trans.gif0.0 ms1.5 KiB
www.news.uct.ac.za/scripts/fonts/FuturaBT/styles.css0.0 ms861 B
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/s...0.0 ms740 B
www.google-analytics.com/plugins/ua/linkid.js3600.0 s722 B
static.doubleclick.net/instream/ad_status.js900.0 s495 B
uct.ac.za/themes/custom/blip_uct/js/album.modal.js?v=1.x1209600.0 s1.2 KiB
uct.ac.za/themes/custom/blip_uct/js/album.overlay.js?v=1.x1209600.0 s1.1 KiB
uct.ac.za/themes/custom/blip_uct/js/album.carousel.js?v=1.11209600.0 s952 B
uct.ac.za/themes/custom/blip_uct/images/icons/fa5-search.svg1209600.0 s878 B
www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.js0.0 ms0 B
www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.js0.0 ms0 B
i.ytimg.com/vi/0IldrY2Gkn0/sddefault.jpg7200.0 s0 B
i.ytimg.com/vi/RbSJqfAT2w8/sddefault.jpg7200.0 s0 B
i.ytimg.com/vi/SJp1SdEJzvY/sddefault.jpg7200.0 s0 B
i.ytimg.com/vi/9imtfIo0gkE/sddefault.jpg7200.0 s0 B
i.ytimg.com/vi/E9dq9ei5YxU/sddefault.jpg7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.news.uct.ac.za/scripts/jquery/jquery-migrate-3.5.2.js0.0 ms0 B
www.news.uct.ac.za/scripts/jquery/jquery-migrate-3.5.2.js0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Bold.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/styles.css0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/styles.css0.0 ms0 B
www.google-analytics.com/plugins/ua/linkid.js3600.0 s0 B
www.google-analytics.com/plugins/ua/linkid.js3600.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B

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:56.757 source:map[column:37926 line:2 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 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:37.406 source:map[type:text value:[unattributed]]] map[reflowTime:96.061 source:map[column:49615 line:1 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.364 source:map[column:51395 line:1 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 urlProvider:network]] map[reflowTime:2.063 source:map[column:49637 line:1 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 urlProvider:network]] map[reflowTime:1.441 source:map[column:52814 line:1 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 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
A crowd in front of Sarah Baartman Hall div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...131.9 KiB84.3 KiB
UCT students studying during break div.tex2jax_process > article.media > div.field > img.image-style-one-hundred-percent
/sites/default/files/styles/one_hundred_percent/public/me...99.8 KiB58.5 KiB
UCT Open Day 2026 div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...90.2 KiB42.7 KiB
Applications now open for 2027 div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...84.5 KiB38.3 KiB
Woman studying at desk div.tex2jax_process > article.media > div.field > img.image-style-one-hundred-percent
/sites/default/files/styles/one_hundred_percent/public/me...50.3 KiB29.5 KiB
Strategy 2030 slide image div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...59.6 KiB27.0 KiB
Autumn 2026 graduation div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...56.4 KiB25.6 KiB
/chattabotz-connect-main/UCT ICON-min.png6.8 KiB6.4 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-2-IMG
nodeLabel: UCT Open Day 2026
path: 1,HTML,1,BODY,8,DIV,0,DIV,4,DIV,0,MAIN,1,SECTION,0,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,ARTICLE,0,DIV,0,IMG
selector: div.field > article.media > div.field > img.image-style-slide-full-width
snippet: <img loading="lazy" src="/sites/default/files/styles/slide_full_width/public/media/images/uct_ac_za…" width="975" height="548" alt="UCT Open Day 2026" typeof="foaf:Image" class="image-style-slide-full-width">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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
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
/sites/default/files/css/optimized/css_h5OxyTm1iSL0zuOjli...632 B
/sites/default/files/css/optimized/css__vRRsFt7BV4mP7xZxA...1.4 KiB
/sites/default/files/css/optimized/css_5ruGhPBtQ3Il6QMi_m...809 B
/sites/default/files/css/optimized/css_qIQc7OAw1XwqIBgqBB...481 B
/sites/default/files/css/optimized/css_Rdt0sliRmumnmqMRXj...1.0 KiB
/sites/default/files/css/optimized/css_QlcJN89KwBXMYarI9O...30.7 KiB659 ms
/sites/default/files/css/optimized/css_2LKjVICLms5v44Ax5e...549 B
/sites/default/files/css/optimized/css_pMu3xr8rU0pnbVNbqJ...1.7 KiB
/sites/default/files/css/optimized/css_IECKFcO-UtF9DpYGaP...999 B
/sites/default/files/css/optimized/css_bWst353dzyB2sqFNdH...3.6 KiB
/sites/default/files/css/optimized/css_rVqyYZFt6Evtl3fYEq...531 B
/sites/default/files/css/optimized/css_KCHuO5qWtCe_S5rcDK...906 B
/sites/default/files/css/optimized/css_GDoPT4ARVr6wOEqKgS...999 B
/sites/default/files/css/optimized/css_I1rZJQ11CJmFlFtfLt...2.4 KiB
/sites/default/files/css/optimized/css_ntZxWSKhN1TyS4gLn7...454 B
/sites/default/files/css/optimized/css_91BCDYY01qHxZJ4MSR...2.9 KiB
/sites/default/files/css/optimized/css_IYCfZgu-y75R6TyHQs...446 B
uct.ac.za/webform/css/main_iamiwant/custom.css?tdj4fe&tdj4fe1.4 KiB
/sites/default/files/css/optimized/css_preCyscIxbnFLDo8ow...748 B
/sites/default/files/css/optimized/css_BKKriOjxQg55i5aYyc...1.9 KiB
/sites/default/files/css/optimized/css_3UwCzzjW7lsNT0andF...1.4 KiB
/sites/default/files/css/optimized/css_AwAVJyXlUw6JRvzMZc...690 B
/sites/default/files/css/optimized/css_Se4z1xXueJTFzhfCOK...1.4 KiB
/sites/default/files/css/optimized/css_ML4GSbBb997wSR-dgj...952 B
/sites/default/files/css/optimized/css_5yTLA0uzJ20AuImpyD...530 B
/sites/default/files/css/optimized/css_HEqLQGrDiKmXwC1MTa...641 B
/sites/default/files/css/optimized/css_Zl9_c_N-tMtTBt6RNq...1.1 KiB
/sites/default/files/css/optimized/css_M_bUrMZVHYGoIybeGm...642 B
/sites/default/files/css/optimized/css_CfOCyDr04vhhTl5hJW...537 B
/sites/default/files/css/optimized/css__QKX_kYrqT2KFGbXOZ...1003 B
/sites/default/files/css/optimized/css_NzBzWpdvZPvnKk81ea...630 B
/sites/default/files/css/optimized/css_lwsHY20OuNl7ovg1dN...564 B
/sites/default/files/css/optimized/css_P2b07ccebLhEAhSv6T...573 B
/sites/default/files/css/optimized/css_I2GnbLhvO9I1mhFh8M...629 B
/sites/default/files/css/optimized/css_sKU4ZHxYFIrteQkhra...1.5 KiB
/sites/default/files/css/optimized/css_CWTTzfCIKsZgkr2Ec2...1.4 KiB
/sites/default/files/css/optimized/css_8H-lRvDkqP2MWHY41l...9.5 KiB330 ms
/sites/default/files/css/optimized/css_P1ri0oFW7T0f7FnPbU...483 B
/sites/default/files/css/optimized/css_6snFbT-ddj8iWCxjtm...561 B
/sites/default/files/css/optimized/css_yaJ7okMMZy7wgp8lqa...654 B
/sites/default/files/css/optimized/css_f8IQ6KA8yxOdD8Kf6G...587 B
/sites/default/files/css/optimized/css_DGliESH0YZgslidg06...578 B
/sites/default/files/css/optimized/css_AbaeiYRn19HwODDMKv...874 B330 ms
/sites/default/files/css/optimized/css_Unn2N0RhD1-f8aiFm1...474 B
/sites/default/files/css/optimized/css_vOD9-5JiqhFy7oiIOz...408 B
/sites/default/files/css/optimized/css_V7_5j6X6-ZXUSwrIy0...570 B
/sites/default/files/css/optimized/css_ccGpg1TE5gnw-QmWil...861 B
/sites/default/files/css/optimized/css_rqST7RlqY6jgCjogaM...506 B
/sites/default/files/css/optimized/css_eunCeWdbJ08LrxILa7...1.5 KiB
/sites/default/files/css/optimized/css_8cmr6-UfrtfJ5MQg1L...567 B
/sites/default/files/css/optimized/css_kJqax_RkZBAk2I3Nq_...3.3 KiB
/sites/default/files/css/optimized/css_GavZNGht7ijdhyT2H0...1.4 KiB
/sites/default/files/css/optimized/css_deEQN6XpU3RSQE7ALL...759 B
/sites/default/files/css/optimized/css_NM_P_m6KHntmAvjl9u...561 B
/sites/default/files/css/optimized/css_iYDzQ6kOzLHfojX5uY...722 B
/sites/default/files/css/optimized/css_6GCeWkLENg0afUIgkm...677 B
/sites/default/files/css/optimized/css_Z-5TKx9kThxW5rYM3v...406 B
/sites/default/files/css/optimized/css_BmLhRcaaqxHxDok9do...1.9 KiB
/sites/default/files/css/optimized/css_4MbGDD09zXMiaSdgai...637 B
/sites/default/files/css/optimized/css_4S2XvMVxhh1162Plqf...522 B
/sites/default/files/css/optimized/css_y2KkHmWi-iiWSvPhQM...487 B
/sites/default/files/css/optimized/css_jro9FUjuN8bUVm-dn4...436 B
/sites/default/files/css/optimized/css_o46CzKmvZWVf3RwRT9...564 B
/sites/default/files/css/optimized/css_d3ogRY7fV4G8Hj9ztz...662 B
/sites/default/files/css/optimized/css_EqnnaMezCBOH6YcrQ3...487 B
/sites/default/files/css/optimized/css_vnoMeoxaaLGzIou_V9...425 B
/sites/default/files/css/optimized/css_9IddknSS13t2ZyGl1l...981 B
/sites/default/files/css/optimized/css_uI2FntcPi0s7LE7aVR...739 B
/sites/default/files/css/optimized/css_ht7sxmQu2oTKSoGWt1...553 B
/sites/default/files/css/optimized/css_m0smgWnMf514_r7TQk...440 B
/sites/default/files/css/optimized/css_RLxG-gqUEGneV3kUIe...486 B
/sites/default/files/css/optimized/css_bRERo_ZBIrKXBca6rU...548 B
/sites/default/files/css/optimized/css_Mo82ZZ31cKXAwJBOcy...426 B
/sites/default/files/css/optimized/css_LpLEHnNmBeNomdeshU...837 B
/sites/default/files/css/optimized/css_P4KMzyTcqt6rkIieW9...684 B
/sites/default/files/css/optimized/css_97htjIvQ15V1EfeTAS...1016 B
/sites/default/files/css/optimized/css_LyrrR6JZO8eTCViUPz...965 B
/sites/default/files/css/optimized/css_Zru9LBZ0sAXcjonUFH...857 B
/sites/default/files/css/optimized/css_kzULKG5pzGyNLykluQ...693 B
/sites/default/files/css/optimized/css_YuXFCqJ6Mh9c2Lz522...933 B
/sites/default/files/css/optimized/css_1OjH-i11sRz4Ym8nsE...2.2 KiB
/sites/default/files/css/optimized/css_0HuQhCQk6T4uSkP7y3...902 B
/sites/default/files/css/optimized/css_BZAI6WR-Y_HIRNgNIE...575 B330 ms
use.fontawesome.com/releases/v6.1.1/css/all.css22.5 KiB1.1 s
use.fontawesome.com/releases/v5.13.1/css/v4-shims.css4.8 KiB166 ms
/css2?family=Montserrat:ital,wght@0,100;0,200;0,300;0,400...1.6 KiB840 ms
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.1.1/css/all.min.css17.3 KiB990 ms

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.news.uct.ac.za/iframe/ucthomevideoslider/http/1.1
www.news.uct.ac.za/iframeUCTRankingsMain/http/1.1
www.news.uct.ac.za/iframemainpaged9/http/1.1
www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.jshttp/1.1
www.news.uct.ac.za/scripts/jquery/jquery-migrate-3.5.2.jshttp/1.1
www.news.uct.ac.za/lib/web/minify/min/?g=general_css&v=2020.04.14.01http/1.1
www.news.uct.ac.za/lib/web/minify/min/?g=preload_js&v=2020.01.15.1http/1.1
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...http/1.1
www.news.uct.ac.za/cache/images/975x520/crop_to_fit/trans.gifhttp/1.1
/cache/images/userfiles/images/news/videos/2026/975x520/f...http/1.1
/cache/images/userfiles/images/news/videos/2026/975x520/f...http/1.1
/cache/images/userfiles/images/news/videos/2026/975x520/f...http/1.1
/cache/images/userfiles/images/news/videos/2026/975x520/f...http/1.1
/cache/images/userfiles/images/news/videos/2025/11/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/09/975x52...http/1.1
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Bold.woffhttp/1.1
www.news.uct.ac.za/scripts/fonts/FuturaBT/styles.csshttp/1.1
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woffhttp/1.1
/cache/images/userfiles/images/researchoffice/2026/03_Mar...http/1.1
/cache/images/userfiles/images/news/2026/01/100x100/focus...http/1.1
/cache/images/userfiles/images/news/2025/12/100x100/focus...http/1.1
/cache/images/userfiles/images/news/2025/11/100x100/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...http/1.1
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...http/1.1
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...http/1.1
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/s...http/1.1

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

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

TTI

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Diagnostics

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 330 ms 49.9 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

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
Unattributable2.5 s13 ms0.0 ms
www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.js2.2 s1.3 s26 ms
www.googletagmanager.com/gtag/js?id=G-HQXW8MGYRR1.4 s1.2 s122 ms
uct.ac.za/1.3 s30 ms4.0 ms
/sites/default/files/js/optimized/js_KRjtvzl6UujB23-j_sF6...1.2 s1.0 s0.3 ms
www.google-analytics.com/analytics.js861 ms609 ms120 ms
/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTf...553 ms261 ms11 ms
www.googletagmanager.com/gtm.js?id=GTM-MCFMTK6430 ms337 ms86 ms
www.googletagmanager.com/gtag/js?id=G-N4B093X321&cx=c&gtm=4e64k0287 ms251 ms32 ms
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...284 ms125 ms144 ms
www.googletagmanager.com/gtag/js?id=G-1DHRF99KRD&cx=c&gtm=4e64k0232 ms190 ms40 ms
ajax.googleapis.com/ajax/libs/webfont/1.5.10/webfont.js208 ms48 ms4.0 ms
www.news.uct.ac.za/lib/web/minify/min/?g=preload_js&v=2020.01.15.1173 ms102 ms68 ms
www.googletagmanager.com/gtm.js?id=GTM-NNKMRNZ172 ms114 ms33 ms
www.google-analytics.com/plugins/ua/linkid.js100 ms96 ms1.3 ms
/media/oembed?url=https%3A//www.youtube.com/watch%3Fv%3D0...96 ms7.8 ms1.1 ms
www.news.uct.ac.za/iframemainpaged9/91 ms11 ms1.6 ms
www.news.uct.ac.za/iframeUCTRankingsMain/89 ms12 ms2.6 ms
/ajax/libs/mathjax/2.7.0/config/TeX-AMS-MML_HTMLorMML.js?...81 ms56 ms24 ms
www.news.uct.ac.za/iframe/ucthomevideoslider/73 ms9.2 ms1.7 ms
/media/oembed?url=https%3A//youtu.be/RbSJqfAT2w8&max_widt...63 ms4.4 ms2.7 ms
/media/oembed?url=https%3A//www.youtube.com/watch%3Fv%3D9...62 ms11 ms0.7 ms
www.news.uct.ac.za/lib/web/minify/min/?g=general_css&v=2020.04.14.0155 ms0.0 ms0.0 ms
/sites/default/files/js/optimized/js_NKosKPT-QGRrPVhbCFPi...52 ms35 ms13 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 Evaluation6.1 s
Other3.3 s
Style & Layout1.9 s
Script Parsing & Compilation834 ms
Parse HTML & CSS705 ms
Rendering260 ms
Garbage Collection241 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
Internal error.Not actionable

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 5.6 KiB

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

URL
University of Cape Town logo div#uct-branding > div.branding--logo > a > img
uct.ac.za/themes/custom/blip_uct/logo.svg
University of Cape Town logo div#uct-branding > div.branding--logo > a > img
uct.ac.za/themes/custom/blip_uct/logo.svg

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

Layout shift culprits
Document request latency
Optimize DOM size
LCP breakdown
Optimize viewport for mobile
User Timing marks and measures 55 user timings
Avoid long main-thread tasks 20 long tasks found
Avoid non-composited animations 33 animated elements found
Network Requests
Network Round Trip Times 180 ms
Server Backend Latencies 200 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Avoid multiple page redirects
Initial server response time was short Root document took 200 ms
Avoid large layout shifts 3 layout shifts found
INP breakdown
89

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.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
header#header > div.region > div#block-searchblock > button.search-toggle header#header > div.region > div#block-searchblock > button.search-toggle

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.clearfix > div.tex2jax_process > div > iframe#iframe-resizer-rankingiframe div.clearfix > div.tex2jax_process > div > iframe#iframe-resizer-rankingiframe
div.clearfix > div.tex2jax_process > div.UCT-fullwidth-container > iframe#iframe-resizer-VCdesk div.clearfix > div.tex2jax_process > div.UCT-fullwidth-container > iframe#iframe-resizer-VCdesk
article.media > div.blazy > div.media > iframe.b-lazy article.media > div.blazy > div.media > iframe.b-lazy

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Contrast

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
VIEW OUR RANKINGS div.homepage-content__text > div.homepage-content-text > p > a.button
APPLY ONLINE div.clearfix > div.tex2jax_process > p.text-align-center > a.button
VISIT UCT NEWS div.clearfix > div.tex2jax_process > p.text-align-center > a.button
(Ends 15 December 2026) div.views-row > article.node > footer.node__meta > div.date--end
(Ends 15 December 2026) div.views-row > article.node > footer.node__meta > div.date--end
(Ends 19 May 2026) div.views-row > article.node > footer.node__meta > div.date--end
(Ends 23 April 2026) div.views-row > article.node > footer.node__meta > div.date--end
EVENTS CALENDAR div.clearfix > div.tex2jax_process > div.text-right > a.button
NOTICEBOARD div.clearfix > div.tex2jax_process > div.text-right > a.button

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
`[role]` values are valid
`[aria-*]` attributes have valid values
`[aria-*]` attributes are valid and not misspelled
Image elements have `[alt]` attributes
Input buttons have discernible text.
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.
Select elements have associated label elements.
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
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
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 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
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
`<input type="image">` elements have `[alt]` text
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
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.
Uses ARIA roles only on compatible elements
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.
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.

URLMap URL
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...
/sites/default/files/js/optimized/js_yt_B6-UYT74y4dRKoGQ9...uct.ac.za/sites/default/files/js/optimized/scroll-parent-min.js.map
/sites/default/files/js/optimized/js_xTMVqsdfgSLZsrDVnB0y...uct.ac.za/sites/default/files/js/optimized/draggable-min.js.map
/sites/default/files/js/optimized/js_XrfmCmDqLTCEPh8gnU8h...uct.ac.za/sites/default/files/js/optimized/mouse-min.js.map
/sites/default/files/js/optimized/js_WmhavmnC0K35xZ9vLX51...uct.ac.za/sites/default/files/js/optimized/index.umd.min.js.map
/sites/default/files/js/optimized/js_w0iO3No0CsyHgJmryEbh...uct.ac.za/sites/default/files/js/optimized/once.min.js.map
/sites/default/files/js/optimized/js_VycJ3FTVVaVyhSCcLXYE...uct.ac.za/sites/default/files/js/optimized/plugin-min.js.map
/sites/default/files/js/optimized/js_trjIfy6wGxnxz9PVSI8r...uct.ac.za/sites/default/files/js/optimized/button-min.js.map
/sites/default/files/js/optimized/js_SpWiM_QFpYbnP3qrlmV1...uct.ac.za/sites/default/files/js/optimized/labels-min.js.map
/sites/default/files/js/optimized/js_shtMqRNOVBaAvLi9-Cpi...uct.ac.za/sites/default/files/js/optimized/controlgroup-min.js.map
/sites/default/files/js/optimized/js_rJQeYB7caXNCdmgzJ4t5...uct.ac.za/sites/default/files/js/optimized/version-min.js.map
/sites/default/files/js/optimized/js_QZ6R3WHZ2xvc16JcQ7QB...uct.ac.za/sites/default/files/js/optimized/widget-min.js.map
/sites/default/files/js/optimized/js_pbrt6BW6zk2scxcVck6p...uct.ac.za/sites/default/files/js/optimized/data-min.js.map
/sites/default/files/js/optimized/js_OYMUXIYk_UxVlsQSqo3_...uct.ac.za/sites/default/files/js/optimized/unique-id-min.js.map
/sites/default/files/js/optimized/js_NKosKPT-QGRrPVhbCFPi...uct.ac.za/sites/default/files/js/optimized/foundation.min.js.map
/sites/default/files/js/optimized/js_J05cWfCFFxc6Ntk7FqEM...uct.ac.za/sites/default/files/js/optimized/form-reset-mixin-min.js.map
/sites/default/files/js/optimized/js_gEmjNg-vrsVI816UzVFe...uct.ac.za/sites/default/files/js/optimized/resizable-min.js.map
/sites/default/files/js/optimized/js_DB1pt9EyFJ14MM4u0q_U...uct.ac.za/sites/default/files/js/optimized/checkboxradio-min.js.map
/sites/default/files/js/optimized/js_CbOM1f2ZQjSvD29Vzs3n...uct.ac.za/sites/default/files/js/optimized/disable-selection-min.js.map
/sites/default/files/js/optimized/js_A7R00KDzeuDMEsk6DOs_...uct.ac.za/sites/default/files/js/optimized/focusable-min.js.map
/sites/default/files/js/optimized/js_6USyYw12Cqf0UHE3chgr...uct.ac.za/sites/default/files/js/optimized/purify.min.js.map
/sites/default/files/js/optimized/js_4VhSX4lEyBg9lxgOnT6e...uct.ac.za/sites/default/files/js/optimized/keycode-min.js.map
/sites/default/files/js/optimized/js_2hr-YHySYMDuptPCwhH1...uct.ac.za/sites/default/files/js/optimized/dialog-min.js.map
/sites/default/files/js/optimized/js_1_Qr-HDXqlP8qV9oE0Le...uct.ac.za/sites/default/files/js/optimized/jquery-patch-min.js.map
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.

Content Best Practices

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

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
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

51
Performance Overall performance score (0–100) based on Core Web Vitals and other metrics. 90+ is good.
79
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.

1.90 s

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

3.01 s

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

221 ms

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

0.201

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

3.54 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.

8.21 s

Detailed Report

Audit breakdown by category with detailed findings.

51

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.

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:0.200588] map[node:map[boundingRect:map[bottom:1850 height:1118 left:0 right:3630 top:732 width:3630] lhId:page-14-::before nodeLabel:div.field > div.field__item > div.paragraph > ::before path:1,HTML,1,BODY,8,DIV,0,DIV,4,DIV,0,MAIN,1,SECTION,0,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,3,DIV,0,DIV,0,::before selector:div.field > div.field__item > div.paragraph > ::before snippet:<::before> type:node] score:0.194681] map[node:map[boundingRect:map[bottom:134 height:46 left:569 right:1350 top:88 width:781] lhId:page-9-UL nodeLabel:Applications Staff Students Alumni Calendar Noticeboard Quick links path:1,HTML,1,BODY,8,DIV,0,DIV,2,SECTION,0,DIV,0,DIV,1,DIV,1,DIV,0,UL selector:div#block-uctmastheadbanner > div#uct-landing-banner-block > div#uct-landing-banner-block--section-template-menu > ul.menu snippet:<ul class="menu"> type:node] score:0.005907 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/montserrat/v31/JTUSjIg1_i6t8kCHKm459WlhyyTh89Y.woff2]]] 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:0.000378] map[node:map[boundingRect:map[bottom:0 height:0 left:0 right:0 top:0 width:0] lhId:page-15-META nodeLabel:head > meta path:1,HTML,0,HEAD,5,META selector:head > meta snippet:<meta name="MobileOptimized" content="width"> type:node] score:0.000378 subItems:map[items:[map[cause:Web font extra:map[type:url value:https://fonts.gstatic.com/s/roboto/v48/KFO7CnqEu92Fr1ME7kSn66aGLdTylUAMa3yUBHMdazQ.woff2]]] 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:0.020124999999999997] map[node:map[boundingRect:map[bottom:912 height:146 left:910 right:1310 top:766 width:400] lhId:page-16-DIV nodeLabel:body.domain--1423604 > div#vergeai-messenger-frame path:1,HTML,1,BODY,112,DIV selector:body.domain--1423604 > div#vergeai-messenger-frame snippet:<div id="vergeai-messenger-frame" class="vergeai-widget-frame vergeai-widget-frame-collapsed vergeai-widget-frame-p…" style="position: fixed; bottom: 3%; right: 3%; z-index: 2147483647;"> type:node] score:0.011318 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:66 height:44 left:32 right:332 top:22 width:300] lhId:page-51-IMG nodeLabel:University of Cape Town logo path:1,HTML,1,BODY,8,DIV,0,DIV,0,SECTION,0,HEADER,1,DIV,0,DIV,0,NAV,0,UL,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div#uct-branding > div.branding--logo > a > img snippet:<img src="/themes/custom/blip_uct/logo.svg" alt="University of Cape Town logo"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:2380 height:530 left:0 right:1350 top:1850 width:1350] lhId:page-17-IFRAME nodeLabel:div.clearfix > div.tex2jax_process > div.UCT-fullwidth-container > iframe#iframe-resizer-VCdesk path:1,HTML,1,BODY,8,DIV,0,DIV,4,DIV,0,MAIN,1,SECTION,0,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,4,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,IFRAME selector:div.clearfix > div.tex2jax_process > div.UCT-fullwidth-container > iframe#iframe-resizer-VCdesk snippet:<iframe class="iframe-resizer videoIframe" style="border: 0px rgb(255, 255, 255); height: 530px;" allowfullscreen="" frameborder="1" id="iframe-resizer-VCdesk" loading="lazy" marginheight="0px" marginwidth="0px" name="news" scrolling="no" src="https://www.news.uct.ac.za/iframe/ucthomevideoslider/" width="100%"> type:node] score:0.004709 subItems:map[items:[map[cause:Unsized image element extra:map[boundingRect:map[bottom:66 height:44 left:32 right:332 top:22 width:300] lhId:page-51-IMG nodeLabel:University of Cape Town logo path:1,HTML,1,BODY,8,DIV,0,DIV,0,SECTION,0,HEADER,1,DIV,0,DIV,0,NAV,0,UL,0,DIV,0,DIV,0,DIV,0,DIV,0,A,0,IMG selector:div#uct-branding > div.branding--logo > a > img snippet:<img src="/themes/custom/blip_uct/logo.svg" alt="University of Cape Town logo"> type:node]]] type:subitems]] map[node:map[boundingRect:map[bottom:1850 height:1118 left:0 right:3630 top:732 width:3630] lhId:page-14-::before nodeLabel:div.field > div.field__item > div.paragraph > ::before path:1,HTML,1,BODY,8,DIV,0,DIV,4,DIV,0,MAIN,1,SECTION,0,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,3,DIV,0,DIV,0,::before selector:div.field > div.field__item > div.paragraph > ::before snippet:<::before> type:node] score:0.004098] map[node:map[boundingRect:map[bottom:554 height:104 left:892 right:1318 top:450 width:426] lhId:page-0-DIV nodeLabel:NEWS UCT research maps Western Cape’s transition to clean transport New resear… path:1,HTML,1,BODY,0,DIV,1,DIV,4,DIV,0,DIV,0,DIV,2,DIV selector:div.grid-item > div.box-article > div > div snippet:<div> type:node] score:0]]

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:59.967 source:map[column:22 line:19 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_KRjtvzl6UujB23-j_sF6dqOcbqg2z8ej98A8RU9bGsg.kjk12BMQYgWzHTlTsh40oAfzJ1jsDD0rpt092h-M9uk.js?v=10.4.5 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:50.111 source:map[type:text value:[unattributed]]] map[reflowTime:37.669 source:map[column:49615 line:1 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 urlProvider:network]] map[reflowTime:0.607 source:map[column:51395 line:1 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 urlProvider:network]] map[reflowTime:2.268 source:map[column:49637 line:1 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 urlProvider:network]] map[reflowTime:19.423 source:map[column:85575 line:1 type:source-location url:https://uct.ac.za/sites/default/files/js/optimized/js_dxIVcwvQ00owLGoUGPTfRYXU-T5rnj8Xi0cXfb3Kn58._JqT3SQfawRcv_BIHPThkBvs0OEvtFFmqPF_lYI_Cxo.js?v=3.7.1 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
UCT Ranked Top 3% globally div.homepage-content__image > article.media > div.field > img
/sites/default/files/media/images/uct_ac_za/2025-07-02-uc...485.3 KiB443.6 KiB
A crowd in front of Sarah Baartman Hall div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...131.9 KiB88.5 KiB
UCT students studying during break div.tex2jax_process > article.media > div.field > img.image-style-one-hundred-percent
/sites/default/files/styles/one_hundred_percent/public/me...99.8 KiB59.0 KiB
UCT Open Day 2026 div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...90.2 KiB46.9 KiB
Applications now open for 2027 div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...84.5 KiB42.4 KiB
Strategy 2030 slide image div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...59.6 KiB29.9 KiB
Woman studying at desk div.tex2jax_process > article.media > div.field > img.image-style-one-hundred-percent
/sites/default/files/styles/one_hundred_percent/public/me...50.3 KiB29.8 KiB
Autumn 2026 graduation div.field > article.media > div.field > img.image-style-slide-full-width
/sites/default/files/styles/slide_full_width/public/media...56.4 KiB28.3 KiB
div > div.slick__slide > article.node > ::before div > div.slick__slide > article.node > ::before
uct.ac.za/sites/default/files/uct_ac_za/slide--graphic.png51.7 KiB21.6 KiB
/chattabotz-connect-main/UCT ICON-min.png6.8 KiB6.6 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-3-IMG
nodeLabel: UCT Open Day 2026
path: 1,HTML,1,BODY,8,DIV,0,DIV,4,DIV,0,MAIN,1,SECTION,0,DIV,1,DIV,0,ARTICLE,0,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,DIV,0,DIV,1,DIV,0,DIV,0,DIV,0,ARTICLE,0,DIV,0,ARTICLE,0,DIV,0,IMG
selector: div.field > article.media > div.field > img.image-style-slide-full-width
snippet: <img loading="lazy" src="/sites/default/files/styles/slide_full_width/public/media/images/uct_ac_za…" width="975" height="548" alt="UCT Open Day 2026" typeof="foaf:Image" class="image-style-slide-full-width">

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.

More than 4 preconnect connections were found. These should be used sparingly and only to the most important origins.
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
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
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/sites/default/files/css/optimized/css_I1rZJQ11CJmFlFtfLt...2.4 KiB
/sites/default/files/css/optimized/css_h5OxyTm1iSL0zuOjli...632 B
/sites/default/files/css/optimized/css_3UwCzzjW7lsNT0andF...1.4 KiB
uct.ac.za/webform/css/main_iamiwant/custom.css?tdj4fe&tdj4fe1.4 KiB
/sites/default/files/css/optimized/css_IECKFcO-UtF9DpYGaP...999 B
/sites/default/files/css/optimized/css_Se4z1xXueJTFzhfCOK...1.4 KiB
/sites/default/files/css/optimized/css_GDoPT4ARVr6wOEqKgS...999 B
/sites/default/files/css/optimized/css_QlcJN89KwBXMYarI9O...30.7 KiB
/sites/default/files/css/optimized/css__QKX_kYrqT2KFGbXOZ...1003 B214 ms
/sites/default/files/css/optimized/css_preCyscIxbnFLDo8ow...749 B
/sites/default/files/css/optimized/css__vRRsFt7BV4mP7xZxA...1.4 KiB
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/sites/default/files/css/optimized/css_M_bUrMZVHYGoIybeGm...642 B
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/sites/default/files/css/optimized/css_5ruGhPBtQ3Il6QMi_m...809 B
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/sites/default/files/css/optimized/css_Zru9LBZ0sAXcjonUFH...857 B
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/sites/default/files/css/optimized/css_BZAI6WR-Y_HIRNgNIE...575 B214 ms
cdnjs.cloudflare.com/ajax/libs/font-awesome/6.1.1/css/all.min.css17.3 KiB328 ms
use.fontawesome.com/releases/v6.1.1/css/all.css22.6 KiB312 ms
use.fontawesome.com/releases/v5.13.1/css/v4-shims.css4.6 KiB
/css2?family=Montserrat:ital,wght@0,100;0,200;0,300;0,400...1.6 KiB281 ms

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
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms579.8 KiB
/cache/images/userfiles/images/news/videos/2025/09/975x52...0.0 ms402.0 KiB
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms393.7 KiB
/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms374.9 KiB
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms341.3 KiB
/cache/images/userfiles/images/news/2026/04/650x435/focus...0.0 ms325.6 KiB
/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms293.8 KiB
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/cache/images/userfiles/images/news/videos/2026/975x520/f...0.0 ms160.8 KiB
i.ytimg.com/vi/0IldrY2Gkn0/maxresdefault.jpg7200.0 s204.0 KiB
i.ytimg.com/vi/SJp1SdEJzvY/maxresdefault.jpg7200.0 s193.2 KiB
/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms140.1 KiB
i.ytimg.com/vi/RbSJqfAT2w8/maxresdefault.jpg7200.0 s186.7 KiB
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/cache/images/userfiles/images/news/videos/2025/10/975x52...0.0 ms65.3 KiB
/sites/default/files/media/images/uct_ac_za/2025-07-02-uc...1209600.0 s486.1 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s311.7 KiB
www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.js0.0 ms30.0 KiB
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms25.3 KiB
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Bold.woff0.0 ms25.2 KiB
www.google-analytics.com/analytics.js7200.0 s20.9 KiB
/cache/images/userfiles/images/news/2025/11/100x100/focus...0.0 ms14.1 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s132.3 KiB
/cache/images/userfiles/images/researchoffice/2026/03_Mar...0.0 ms10.5 KiB
www.news.uct.ac.za/scripts/jquery/jquery-migrate-3.5.2.js0.0 ms10.4 KiB
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/cache/images/userfiles/images/news/2026/01/100x100/focus...0.0 ms9.3 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s90.6 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s84.9 KiB
/cache/images/userfiles/images/news/2025/12/100x100/focus...0.0 ms8.3 KiB
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uct.ac.za/sites/default/files/uct_ac_za/homepage-section-pattern-3-v2.png1209600.0 s72.4 KiB
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...0.0 ms6.0 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s59.9 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s56.7 KiB
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/sites/default/files/styles/one_hundred_percent/public/me...1209600.0 s50.7 KiB
/sites/default/files/styles/slide_full_width/public/media...1209600.0 s40.4 KiB
uct.ac.za/sites/default/files/uct_ac_za/homepage-section-pattern-1.svg1209600.0 s34.5 KiB
uct.ac.za/sites/default/files/uct_ac_za/homepage-section-pattern-2.svg1209600.0 s30.9 KiB
uct.ac.za/themes/custom/blip_uct/logo.svg1209600.0 s30.0 KiB
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...0.0 ms2.8 KiB
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...0.0 ms1.7 KiB
www.news.uct.ac.za/cache/images/975x520/crop_to_fit/trans.gif0.0 ms1.5 KiB
www.news.uct.ac.za/scripts/fonts/FuturaBT/styles.css0.0 ms861 B
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/s...0.0 ms740 B
www.google-analytics.com/plugins/ua/linkid.js3600.0 s722 B
static.doubleclick.net/instream/ad_status.js900.0 s494 B
uct.ac.za/themes/custom/blip_uct/js/album.modal.js?v=1.x1209600.0 s1.2 KiB
uct.ac.za/themes/custom/blip_uct/js/album.overlay.js?v=1.x1209600.0 s1.1 KiB
uct.ac.za/themes/custom/blip_uct/js/album.carousel.js?v=1.11209600.0 s952 B
uct.ac.za/themes/custom/blip_uct/images/icons/fa5-search.svg1209600.0 s878 B
/a?v=3&t=l&pid=318764774&rv=64k0&tag_exp=0~115938466~1159...0.0 ms11 B
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www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.js0.0 ms0 B
www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.js0.0 ms0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.google-analytics.com/analytics.js7200.0 s0 B
www.news.uct.ac.za/scripts/jquery/jquery-migrate-3.5.2.js0.0 ms0 B
www.news.uct.ac.za/scripts/jquery/jquery-migrate-3.5.2.js0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Bold.woff0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/styles.css0.0 ms0 B
www.news.uct.ac.za/scripts/fonts/FuturaBT/styles.css0.0 ms0 B
www.google-analytics.com/plugins/ua/linkid.js3600.0 s0 B
www.google-analytics.com/plugins/ua/linkid.js3600.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B
static.doubleclick.net/instream/ad_status.js900.0 s0 B

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.news.uct.ac.za/iframeUCTRankingsMain/http/1.1
www.news.uct.ac.za/iframemainpaged9/http/1.1
www.news.uct.ac.za/iframe/ucthomevideoslider/http/1.1
www.news.uct.ac.za/scripts/jquery/jquery-3.7.1.min.jshttp/1.1
www.news.uct.ac.za/scripts/jquery/jquery-migrate-3.5.2.jshttp/1.1
www.news.uct.ac.za/lib/web/minify/min/?g=general_css&v=2020.04.14.01http/1.1
www.news.uct.ac.za/lib/web/minify/min/?g=preload_js&v=2020.01.15.1http/1.1
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...http/1.1
www.news.uct.ac.za/cache/images/975x520/crop_to_fit/trans.gifhttp/1.1
/cache/images/userfiles/images/news/videos/2026/975x520/f...http/1.1
/cache/images/userfiles/images/news/videos/2026/975x520/f...http/1.1
/cache/images/userfiles/images/news/videos/2026/975x520/f...http/1.1
/cache/images/userfiles/images/news/videos/2026/975x520/f...http/1.1
/cache/images/userfiles/images/news/videos/2025/11/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/10/975x52...http/1.1
/cache/images/userfiles/images/news/videos/2025/09/975x52...http/1.1
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Bold.woffhttp/1.1
www.news.uct.ac.za/scripts/fonts/FuturaBT/styles.csshttp/1.1
www.news.uct.ac.za/scripts/fonts/FuturaBT/FuturaBT-Heavy.woffhttp/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/news/2026/04/650x435/focus...http/1.1
/cache/images/userfiles/images/researchoffice/2026/03_Mar...http/1.1
/cache/images/userfiles/images/news/2026/01/100x100/focus...http/1.1
/cache/images/userfiles/images/news/2025/12/100x100/focus...http/1.1
/cache/images/userfiles/images/news/2025/11/100x100/focus...http/1.1
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...http/1.1
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...http/1.1
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/i...http/1.1
/scripts/jquery/plugins/unitegallery-master-1.7.45/dist/s...http/1.1

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

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
div.field > div.field__item > div.paragraph > ::before div.field > div.field__item > div.paragraph > ::before
0.195
body.domain--1423604 > div#vergeai-messenger-frame body.domain--1423604 > div#vergeai-messenger-frame
0.011
Applications Staff Students Alumni Calendar Noticeboard Quick links div#block-uctmastheadbanner > div#uct-landing-banner-block > div#uct-landing-banner-block--section-template-menu > ul.menu
0.006
div.clearfix > div.tex2jax_process > div.UCT-fullwidth-container > iframe#iframe-resizer-VCdesk div.clearfix > div.tex2jax_process > div.UCT-fullwidth-container > iframe#iframe-resizer-VCdesk
0.005
div.field > div.field__item > div.paragraph > ::before div.field > div.field__item > div.paragraph > ::before
0.004
head > meta head > meta
0.000
NEWS UCT research maps Western Cape’s transition to clean transport New resear… div.grid-item > div.box-article > div > div
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

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

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: 210 ms 41.1 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.

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 Evaluation1.4 s
Other676 ms
Style & Layout455 ms
Script Parsing & Compilation200 ms
Parse HTML & CSS169 ms
Rendering59 ms
Garbage Collection38 ms

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Estimated savings: 0.0 ms 5.6 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

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
University of Cape Town logo div#uct-branding > div.branding--logo > a > img
uct.ac.za/themes/custom/blip_uct/logo.svg
University of Cape Town logo div#uct-branding > div.branding--logo > a > img
uct.ac.za/themes/custom/blip_uct/logo.svg

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

Document request latency
Optimize DOM size
LCP breakdown
Optimize viewport for mobile
User Timing marks and measures 1,031 user timings
Avoid long main-thread tasks 4 long tasks found
Avoid non-composited animations 33 animated elements found
Page didn't prevent back/forward cache restoration
Network Requests
Network Round Trip Times 170 ms
Server Backend Latencies 250 ms
Tasks
Diagnostics
Metrics
Screenshot Thumbnails
Final Screenshot
Script Treemap Data
Resources Summary
Avoid multiple page redirects
Initial server response time was short Root document took 190 ms
INP breakdown
79

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

Some ARIA parent roles must contain specific child roles to perform their intended accessibility functions. Learn more about roles and required children elements.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Home About us Study at UCT Campus life Research & innovation Internationalisati… div.page-header-after > div.region > div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu

Some ARIA child roles must be contained by specific parent roles to properly perform their intended accessibility functions. Learn more about ARIA roles and required parent element.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
About us div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu > li.menu-item > a
Study at UCT div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu > li.menu-item > a
Campus life div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu > li.menu-item > a
Research & innovation div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu > li.menu-item > a
Vision 2030 div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu > li.menu-item > a
News & media div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu > li.menu-item > a
Contacts & maps div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu > li.menu-item > a

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.

Names and labels

When a button doesn't have an accessible name, screen readers announce it as "button", making it unusable for users who rely on screen readers. Learn how to make buttons more accessible.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
header#header > div.region > div#block-searchblock > button.search-toggle header#header > div.region > div#block-searchblock > button.search-toggle

Screen reader users rely on frame titles to describe the contents of frames. Learn more about frame titles.

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
div.clearfix > div.tex2jax_process > div > iframe#iframe-resizer-rankingiframe div.clearfix > div.tex2jax_process > div > iframe#iframe-resizer-rankingiframe
div.clearfix > div.tex2jax_process > div.UCT-fullwidth-container > iframe#iframe-resizer-VCdesk div.clearfix > div.tex2jax_process > div.UCT-fullwidth-container > iframe#iframe-resizer-VCdesk
article.media > div.blazy > div.media > iframe.b-lazy article.media > div.blazy > div.media > iframe.b-lazy

These are opportunities to improve the semantics of the controls in your application. This may enhance the experience for users of assistive technology, like a screen reader.

Contrast

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
Donate to UCT div#block-uctdomainmenuactivedomainsubsitemenu > ul.menu > li.menu-item > a.is-external
VIEW OUR RANKINGS div.homepage-content__text > div.homepage-content-text > p > a.button
VISIT UCT NEWS div.clearfix > div.tex2jax_process > p.text-align-center > a.button
(Ends 15 December 2026) div.views-row > article.node > footer.node__meta > div.date--end
(Ends 15 December 2026) div.views-row > article.node > footer.node__meta > div.date--end
(Ends 19 May 2026) div.views-row > article.node > footer.node__meta > div.date--end
(Ends 23 April 2026) div.views-row > article.node > footer.node__meta > div.date--end
EVENTS CALENDAR div.clearfix > div.tex2jax_process > div.text-right > a.button
NOTICEBOARD div.clearfix > div.tex2jax_process > div.text-right > a.button

These are opportunities to improve the legibility of your content.

Tables and lists

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

Why this matters

Performance issues directly impact user engagement and conversion rates.

Failing Elements
University of Cape Town logo div.region > div#block-uctdomainmenuglobalmenublock > nav.global-navigation-menu > ul.global-navigation-menu__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-*]` 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
Image elements have `[alt]` attributes
Input buttons have discernible text.
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.
Select elements have associated label elements.
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
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
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
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
`<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
`<html>` element has an `[xml:lang]` attribute with the same base language as the `[lang]` attribute.
`<input type="image">` elements have `[alt]` text
The document does not use `<meta http-equiv="refresh">`
`<object>` elements have alternate text
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.
Uses ARIA roles only on compatible elements
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.
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.

URLMap URL
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...
/lib/web/minify/min/?g=general_js,slider_js,mediaplayer_j...
/sites/default/files/js/optimized/js_yt_B6-UYT74y4dRKoGQ9...uct.ac.za/sites/default/files/js/optimized/scroll-parent-min.js.map
/sites/default/files/js/optimized/js_xTMVqsdfgSLZsrDVnB0y...uct.ac.za/sites/default/files/js/optimized/draggable-min.js.map
/sites/default/files/js/optimized/js_XrfmCmDqLTCEPh8gnU8h...uct.ac.za/sites/default/files/js/optimized/mouse-min.js.map
/sites/default/files/js/optimized/js_WmhavmnC0K35xZ9vLX51...uct.ac.za/sites/default/files/js/optimized/index.umd.min.js.map
/sites/default/files/js/optimized/js_w0iO3No0CsyHgJmryEbh...uct.ac.za/sites/default/files/js/optimized/once.min.js.map
/sites/default/files/js/optimized/js_VycJ3FTVVaVyhSCcLXYE...uct.ac.za/sites/default/files/js/optimized/plugin-min.js.map
/sites/default/files/js/optimized/js_trjIfy6wGxnxz9PVSI8r...uct.ac.za/sites/default/files/js/optimized/button-min.js.map
/sites/default/files/js/optimized/js_SpWiM_QFpYbnP3qrlmV1...uct.ac.za/sites/default/files/js/optimized/labels-min.js.map
/sites/default/files/js/optimized/js_shtMqRNOVBaAvLi9-Cpi...uct.ac.za/sites/default/files/js/optimized/controlgroup-min.js.map
/sites/default/files/js/optimized/js_rJQeYB7caXNCdmgzJ4t5...uct.ac.za/sites/default/files/js/optimized/version-min.js.map
/sites/default/files/js/optimized/js_QZ6R3WHZ2xvc16JcQ7QB...uct.ac.za/sites/default/files/js/optimized/widget-min.js.map
/sites/default/files/js/optimized/js_pbrt6BW6zk2scxcVck6p...uct.ac.za/sites/default/files/js/optimized/data-min.js.map
/sites/default/files/js/optimized/js_OYMUXIYk_UxVlsQSqo3_...uct.ac.za/sites/default/files/js/optimized/unique-id-min.js.map
/sites/default/files/js/optimized/js_NKosKPT-QGRrPVhbCFPi...uct.ac.za/sites/default/files/js/optimized/foundation.min.js.map
/sites/default/files/js/optimized/js_J05cWfCFFxc6Ntk7FqEM...uct.ac.za/sites/default/files/js/optimized/form-reset-mixin-min.js.map
/sites/default/files/js/optimized/js_gEmjNg-vrsVI816UzVFe...uct.ac.za/sites/default/files/js/optimized/resizable-min.js.map
/sites/default/files/js/optimized/js_DB1pt9EyFJ14MM4u0q_U...uct.ac.za/sites/default/files/js/optimized/checkboxradio-min.js.map
/sites/default/files/js/optimized/js_CbOM1f2ZQjSvD29Vzs3n...uct.ac.za/sites/default/files/js/optimized/disable-selection-min.js.map
/sites/default/files/js/optimized/js_A7R00KDzeuDMEsk6DOs_...uct.ac.za/sites/default/files/js/optimized/focusable-min.js.map
/sites/default/files/js/optimized/js_6USyYw12Cqf0UHE3chgr...uct.ac.za/sites/default/files/js/optimized/purify.min.js.map
/sites/default/files/js/optimized/js_4VhSX4lEyBg9lxgOnT6e...uct.ac.za/sites/default/files/js/optimized/keycode-min.js.map
/sites/default/files/js/optimized/js_2hr-YHySYMDuptPCwhH1...uct.ac.za/sites/default/files/js/optimized/dialog-min.js.map
/sites/default/files/js/optimized/js_1_Qr-HDXqlP8qV9oE0Le...uct.ac.za/sites/default/files/js/optimized/jquery-patch-min.js.map
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.

Content Best Practices

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

Structured data is valid
Page isn’t blocked from indexing
Document has a `<title>` element
Document has a meta description
Page has successful HTTP status code
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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