Audit Result

UUID: 019e3b92-1454-709f-99fc-76688acb5788

Share on X Recheck Back to history
manuelgruber.com

https://manuelgruber.com/

Scanned 3 months ago

78
Fair Score
39 total checks
Passed
24
Warnings
13
Errors
2

Meta Information

  • Title Tag Warning

    Found 29 characters. Keep title between 30 and 60 characters.

    Fix: Add a unique <title> tag describing the main page intent in 30-60 characters.

  • Meta Description Pass

    Found 82 characters. Good snippet length.

  • Canonical URL Pass

    Canonical found: https://manuelgruber.com/

  • Favicon Pass

    Favicon found and reachable: /icons/favicon.svg (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: "Manuel Gruber".

  • Heading Hierarchy Pass

    Valid heading flow across 3 headings.

  • Image Alt Text Error

    3 of 3 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.

    • • HSTS is missing includeSubDomains.
    • • Could not probe the HTTP version of this page.
    • • Strict-Transport-Security: max-age=31536000

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

  • Security Headers Warning

    Missing: content-security-policy.

    Full HTTP headers (19)
    • • alt-svc: h3=":443"; ma=86400
    • • cache-control: max-age=3600, s-maxage=86400
    • • content-encoding: br
    • • content-type: text/html
    • • date: Mon, 18 May 2026 14:51:27 GMT
    • • etag: W/"ef039466abef3078cd6765221199b10e"
    • • last-modified: Sat, 16 May 2026 14:49:03 GMT
    • • referrer-policy: strict-origin-when-cross-origin
    • • server: AmazonS3
    • • strict-transport-security: max-age=31536000
    • • vary: Accept-Encoding
    • • via: 1.1 e4aa00d43c392896077df2add1b436f4.cloudfront.net (CloudFront)
    • • x-amz-cf-id: gytMKpMS-3Z1nJYPg8I_6C_S5ids9ZIJKjTFliH4ZqfMryjHvlOBmA==
    • • x-amz-cf-pop: BOS50-P3
    • • x-amz-server-side-encryption: AES256
    • • x-cache: RefreshHit from cloudfront
    • • x-content-type-options: nosniff
    • • x-frame-options: SAMEORIGIN
    • • x-xss-protection: 1; mode=block

    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 Warning

    Domain does not appear to be behind Cloudflare.

  • Perceived Load Time Pass

    Loaded in 0.48s (perceived).

  • Render Blocking Resources Warning

    5 scripts and 1 styles may block rendering.

    • • script: https://peu.manuelgruber.com/array/phc_eagFV9MlkdTW4n7zsY7v5YTtVRGS2ivIHNeKGHEhecX/config.js
    • • script: https://peu.manuelgruber.com/static/posthog-recorder.js?v=1.374.0
    • • script: https://peu.manuelgruber.com/static/surveys.js?v=1.374.0
    • • script: https://peu.manuelgruber.com/static/dead-clicks-autocapture.js?v=1.374.0
    • • script: https://peu.manuelgruber.com/static/web-vitals.js?v=1.374.0
    • • style: https://manuelgruber.com/css/main.css

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

  • Compression Warning

    3 text resources look uncompressed.

    • • https://i.kissmetrics.com/i.js (application/javascript,application/x-javascript)
    • • https://hn.inspectlet.com/ginit/1276712952 (application/json; charset=utf-8)
    • • blob:https://manuelgruber.com/b61259ba-5844-4060-9957-062f7c0a1b69 (text/javascript;charset=utf-8)

    Fix: Enable Brotli or Gzip compression for HTML, CSS, JS, and JSON responses.

  • Robots.txt Pass

    Found robots.txt (200).

  • Sitemap File Pass

    Found sitemap (200) at https://manuelgruber.com/sitemap.xml.

  • Crawl Directives Warning

    No robots meta tag defined.

    Fix: Add <meta name="robots" content="index,follow"> (or the intended directive) in <head>.

Accessibility Basics

  • Form Labels Pass

    All 1 controls are labeled.

  • Landmarks Pass

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

  • Tap Target Size Warning

    21 interactive elements appear smaller than 48px.

    • • a.group.relative (Hi ) - 38x40px
    • • a.group.relative (Projects) - 80x40px
    • • a.group.relative (Archive) - 75x40px
    • • a.group.relative (Contact) - 77x40px
    • • a.group.relative (Current language: English) - 34x32px
    • • a.group.relative (Auf Deutsch wechseln) - 33x32px
    • • button.group.relative (Toggle theme (System)) - 48x40px
    • • a.inline-flex.items-center (See my work) - 118x40px
    • • a.inline-flex.items-center (Contact me →) - 124x40px
    • • a.group.relative (GitHub Org Open github.com/zaai-com in a new tab) - 32x32px
    • • a.group.relative (GitHub Open github.com/manuelgruber in a new tab) - 32x32px
    • • a.group.relative (LinkedIn Open linkedin.com/in/manuelgruber in a new tab) - 32x32px
    • • a.group.relative (Instagram Open instagram.com/manuelgruber in a new tab) - 32x32px
    • • button.ml-4.flex-none (Subscribe) - 93x40px
    • • a.transition.hover:text-gold-700 (Hi) - 14x24px
    • • a.transition.hover:text-gold-700 (Data) - 32x24px
    • • a.transition.hover:text-gold-700 (Projects) - 56x24px
    • • a.transition.hover:text-gold-700 (Archive) - 51x24px
    • • a.transition.hover:text-gold-700 (Contact) - 53x24px
    • • button#cookie-notice-accept.inline-flex.items-center (Accept) - 73x40px
    • • a.text-sm.font-semibold (Details) - 48x24px

    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 Warning

    1 social preview quality issues detected.

    • • ISSUE: Preview image aspect ratio (1.50) differs from the recommended ~1.91:1.
    • • 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: 0.19 MB
    • • MEASURED: Image dimensions: 1900x1264

    Fix: Use absolute OG/Twitter URLs, keep metadata lengths in recommended ranges, and provide a preview image near 1200x630 under 5MB.

Links Analysis

  • Internal Links Pass

    Checked 16 links. No broken internal links found.

  • External Links Warning

    1 external links returned errors or timed out.

    • • https://www.linkedin.com/in/manuelgruber/ (HTTP 404)

    Fix: Replace dead external URLs or point to working alternatives.

  • Link Format Warning

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

    • • href="#" text="home energy management"

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

Performance & Runtime

  • Core Web Vitals: LCP Pass

    Largest Contentful Paint: 0.52s.

  • Core Web Vitals: CLS Pass

    Cumulative Layout Shift: 0.000.

  • Main Thread Blocking (TBT) Pass

    Total Blocking Time estimate: 4ms.

  • Broken Assets Error

    2 asset requests failed.

    • • https://doug1izaerwt3.cloudfront.net/138d30f8ea5010e0653eaf63703b7f60fbbaa34b.1.js (net::ERR_NAME_NOT_RESOLVED)
    • • https://app.statuscake.com/Login/?redirect=/&nosession=true (net::ERR_BLOCKED_BY_ORB)

    Fix: Fix missing files, update asset URLs, and ensure static assets return HTTP 200.

  • JavaScript Runtime Errors Warning

    3 JavaScript runtime issues detected.

    • • Request failed: https://doug1izaerwt3.cloudfront.net/138d30f8ea5010e0653eaf63703b7f60fbbaa34b.1.js (net::ERR_NAME_NOT_RESOLVED, type: script)
    • • Request failed: https://app.statuscake.com/Login/?redirect=/&nosession=true (net::ERR_BLOCKED_BY_ORB, type: script)
    • • Failed to load resource: net::ERR_NAME_NOT_RESOLVED [https://doug1izaerwt3.cloudfront.net/138d30f8ea5010e0653eaf63703b7f60fbbaa34b.1.js:1]

    Fix: Fix JS files returning 404/failed requests and resolve the listed runtime exceptions.