Audit Result

UUID: 01a06fd5-d2b6-7274-9f0a-3a40d5b07a69

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oppia.world

https://oppia.world/

Scanned 1 day ago

90
Excellent Score
39 total checks
Passed
32
Warnings
6
Errors
1

Meta Information

  • Title Tag Pass

    Found 33 characters. Length is optimal.

  • Meta Description Pass

    Found 134 characters. Good snippet length.

  • Canonical URL Pass

    Canonical found: https://oppia.world

  • Favicon Pass

    Favicon found and reachable: /favicon.png (HTTP 200).

    Favicon
  • Viewport Meta Pass

    Viewport configured: width=device-width, initial-scale=1

  • HTML Lang Pass

    Language declared as "en".

Content Structure

  • H1 Tag Pass

    Exactly one H1 found: "Digital products for the moments that move you.".

  • Heading Hierarchy Pass

    Valid heading flow across 9 headings.

  • Image Alt Text Error

    3 of 4 images are missing alt text.

    Fix: Add meaningful alt attributes to all informative images for accessibility and image SEO.

Technical Optimization

  • HTTPS Pass

    Page is served over HTTPS.

  • HSTS & HTTPS Redirect Warning

    2 HTTPS hardening issues detected.

    • • Missing Strict-Transport-Security header.
    • • Could not probe the HTTP version of this page.

    Fix: Set Strict-Transport-Security with a long max-age, add includeSubDomains, and redirect all HTTP requests to HTTPS.

  • Security Headers Warning

    Missing: strict-transport-security, content-security-policy, x-frame-options, x-content-type-options, referrer-policy.

    Full HTTP headers (9)
    • • alt-svc: h3=":443"; ma=86400
    • • cf-ray: a36280e6aa2ce55f-IAD
    • • content-encoding: zstd
    • • content-type: text/html
    • • date: Sat, 05 Sep 2026 04:31:17 GMT
    • • nel: {"report_to":"cf-nel","success_fraction":0.0,"max_age":604800}
    • • report-to: {"group":"cf-nel","max_age":604800,"endpoints":[{"url":"https://a.nel.cloudflare.com/report/v4?s=bdysghXmYus7VXuxnWl4Gdu972HtJF96tmDjIcJKkATLmwk%2FAGxqEuU1TLy%2Bni5bwkAGy8r7aUecsg%2BZ%2B48Mzt6CBRDmyypPBLNM2RytpNbDMww%2B5ywk8%2B8s%2FResrU6xR%2B1lTCaWDU%2Bx5Q%3D%3D"}]}
    • • server: cloudflare
    • • server-timing: cfEdge;dur=61,cfOrigin;dur=0,cfWorker;dur=30

    Fix: Add the missing security headers at your reverse proxy or application layer.

  • CSP Quality Warning

    Content-Security-Policy header is missing.

    • • Missing Content-Security-Policy header.

    Fix: Define a restrictive Content-Security-Policy and avoid unsafe directives such as unsafe-inline and unsafe-eval.

  • Cookie Security Pass

    No first-party cookies were set during the initial page load.

  • Server Version Disclosure Pass

    Server response headers do not expose version tokens.

  • Cloudflare Proxy Pass

    Domain appears to be behind Cloudflare.

    • • server: cloudflare
    • • cf-ray: a36280e6aa2ce55f-IAD
  • Perceived Load Time Pass

    Loaded in 0.38s (perceived).

  • Render Blocking Resources Warning

    0 scripts and 1 styles may block rendering.

    • • style: https://oppia.world/assets/root-BmzJ3U9i.css

    Fix: Defer non-critical scripts and inline critical CSS to improve first paint speed.

  • Compression Pass

    Text-like assets appear compressed.

  • Robots.txt Pass

    Found robots.txt (200).

  • Sitemap File Pass

    Found sitemap (200) at https://oppia.world/sitemap.xml.

  • Crawl Directives Pass

    Robots meta found: index, follow

Accessibility Basics

  • Form Labels Pass

    All 0 controls are labeled.

  • Landmarks Pass

    Header, nav, main, and footer landmarks are present.

  • Tap Target Size Warning

    16 interactive elements appear smaller than 48px.

    • • a.brand (Oppia home) - 148x32px
    • • a (Products) - 56x20px
    • • a (Why Oppia world) - 106x20px
    • • a (About) - 38x20px
    • • a.text-link (See how we design) - 144x26px
    • • button.current (View Moozhaf) - 42x4px
    • • button (View PICA) - 22x4px
    • • button (View Tolk) - 22x4px
    • • button (View Toolhub) - 22x4px
    • • button (View Writer) - 22x4px
    • • a.brand.footer-brand (oppia world) - 144x32px
    • • a (Products) - 47x18px
    • • a (Principles) - 52x18px
    • • a (About) - 31x18px
    • • a (Privacy) - 39x18px
    • • a (Terms) - 33x18px

    Fix: Increase target size to at least 48x48 CSS pixels for touch interactions.

Social & Rich Results

  • Open Graph Basics Pass

    Core Open Graph tags are present.

  • Open Graph Image Pass

    og:image is present and absolute.

    Open Graph Image
  • Twitter Card Pass

    twitter:card set to summary_large_image.

  • Structured Data Pass

    JSON-LD schema detected.

  • PWA Metadata Pass

    Manifest and Apple touch icon are configured.

  • Open Graph/Twitter Quality Pass

    Social preview metadata and image quality look good for Open Graph/Twitter.

    • • GUIDELINE: Optimal og:title length: 40-60 characters (acceptable: 10-70).
    • • GUIDELINE: Optimal og:description length: 110-160 characters (acceptable: 50-200).
    • • GUIDELINE: Optimal preview image size: 1200x630 pixels.
    • • GUIDELINE: Optimal preview image aspect ratio: 1.91:1.
    • • GUIDELINE: Optimal preview image file size: under 5 MB.
    • • GUIDELINE: Recommended twitter:card: summary_large_image.
    • • MEASURED: Image size: 0.62 MB
    • • MEASURED: Image dimensions: 1200x630

Links Analysis

  • Internal Links Pass

    Checked 4 links. No broken internal links found.

  • External Links Pass

    No broken external links found in checked URLs.

  • Link Format Warning

    2 links are empty, invalid, or placeholder-only.

    • • href="#" text="Privacy"
    • • href="#" text="Terms"

    Fix: Replace empty/#/javascript href values with real destinations or use buttons for non-navigation actions.

Performance & Runtime