Audit Result
UUID: 019f937b-04c7-7023-a334-90943ab23bc1
https://www.erwin-mauerer.de/
Scanned 1 month ago
Meta Information
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Title Tag Pass
Found 57 characters. Length is optimal.
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Meta Description Pass
Found 157 characters. Good snippet length.
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Canonical URL Pass
Canonical found: https://www.erwin-mauerer.de/
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Viewport Meta Pass
Viewport configured: width=device-width, initial-scale=1.0
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HTML Lang Pass
Language declared as "de".
Content Structure
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H1 Tag Pass
Exactly one H1 found: "Heizung, Sanitär, Elektro und Photovoltaik in Straubing und Straubing-Bogen".
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Heading Hierarchy Pass
Valid heading flow across 17 headings.
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Image Alt Text Pass
All 42 images include alt text.
Technical Optimization
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HTTPS Pass
Page is served over HTTPS.
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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.
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Security Headers Warning
Missing: strict-transport-security, content-security-policy, x-frame-options, x-content-type-options, referrer-policy.
Full HTTP headers (5)
- • content-encoding: gzip
- • content-type: text/html; charset=UTF-8
- • date: Fri, 24 Jul 2026 09:35:31 GMT
- • server: Apache
- • vary: Accept-Encoding
Fix: Add the missing security headers at your reverse proxy or application layer.
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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.
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Cookie Security Pass
No first-party cookies were set during the initial page load.
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Server response headers do not expose version tokens.
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Cloudflare Proxy Warning
Domain does not appear to be behind Cloudflare.
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Perceived Load Time Pass
Loaded in 1.12s (perceived).
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Render Blocking Resources Warning
1 scripts and 4 styles may block rendering.
- • script: https://www.erwin-mauerer.de/style/js/jquery.min.js
- • style: https://www.erwin-mauerer.de/style/css/bootstrap.min.css
- • style: https://www.erwin-mauerer.de/style/css/plugins.css
- • style: https://www.erwin-mauerer.de/style/type/icons.css
- • style: https://www.erwin-mauerer.de/style.css
Fix: Defer non-critical scripts and inline critical CSS to improve first paint speed.
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Compression Warning
9 text resources look uncompressed.
- • https://www.erwin-mauerer.de/style/css/bootstrap.min.css (text/css)
- • https://www.erwin-mauerer.de/style/type/icons.css (text/css)
- • https://www.erwin-mauerer.de/style.css (text/css)
- • https://www.erwin-mauerer.de/style/css/plugins.css (text/css)
- • https://www.erwin-mauerer.de/style/js/jquery.min.js (text/javascript)
- • https://www.erwin-mauerer.de/style/js/popper.min.js (text/javascript)
- • https://www.erwin-mauerer.de/style/js/bootstrap.min.js (text/javascript)
- • https://www.erwin-mauerer.de/style/js/scripts.js (text/javascript)
- • https://www.erwin-mauerer.de/style/js/plugins.js (text/javascript)
Fix: Enable Brotli or Gzip compression for HTML, CSS, JS, and JSON responses.
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Robots.txt Pass
Found robots.txt (200).
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Sitemap File Pass
Found sitemap (200) at https://www.erwin-mauerer.de/sitemap.xml.
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Crawl Directives Pass
Robots meta found: index, follow
Accessibility Basics
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Form Labels Pass
All 9 controls are labeled.
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Landmarks Warning
Missing landmarks: header, main.
Fix: Use semantic regions (<header>, <nav>, <main>, <footer>) for navigation and assistive tech.
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Tap Target Size Warning
9 interactive elements appear smaller than 48px.
- • a.nav-link (Jobs) - 39x76px
- • button#heizungstausch-popup-close (Popup schließen) - 42x42px
- • a.nav-link (Jobs) - 39x75px
- • a.collapsed (Goldakzente und Maßarbeit - weiterlesen) - 1140x40px
- • button.plyr__control (Play) - 32x32px
- • button.plyr__control (UnmuteMute) - 32x32px
- • button#plyr-settings-toggle-9060.plyr__control (Settings) - 32x32px
- • button.plyr__control (Exit fullscreenEnter fullscreen) - 32x32px
- • button.btn (Google Maps laden) - 252x47px
Fix: Increase target size to at least 48x48 CSS pixels for touch interactions.
Social & Rich Results
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Open Graph Basics Pass
Core Open Graph tags are present.
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Twitter Card Pass
twitter:card set to summary_large_image.
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Structured Data Pass
JSON-LD schema detected.
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PWA Metadata Warning
Manifest or Apple touch icon is missing.
Fix: Link your web app manifest and apple-touch-icon for improved install/share experiences.
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Open Graph/Twitter Quality Warning
1 social preview quality issues detected.
- • ISSUE: Preview image aspect ratio (2.40) 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: 1920x800
Fix: Use absolute OG/Twitter URLs, keep metadata lengths in recommended ranges, and provide a preview image near 1200x630 under 5MB.
Links Analysis
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Internal Links Pass
Checked 42 links. No broken internal links found.
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External Links Pass
No broken external links found in checked URLs.
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Link Format Warning
6 links are empty, invalid, or placeholder-only.
- • href="(empty)"
- • href="(empty)" text="Home"
- • href="(empty)" text="Leistungen"
- • href="(empty)"
- • href="(empty)" text="Home"
- • href="(empty)" text="Leistungen"
Fix: Replace empty/#/javascript href values with real destinations or use buttons for non-navigation actions.
Performance & Runtime
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Core Web Vitals: LCP Pass
Largest Contentful Paint: 1.15s.
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Core Web Vitals: CLS Pass
Cumulative Layout Shift: 0.009.
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Total Blocking Time estimate: 0ms.
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Broken Assets Pass
No failed CSS/JS/image/font/media requests detected.
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No console/page runtime errors detected during audit.