Audit Result

Found 61 characters. Keep title between 30 and 60 characters.

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

Found 153 characters. Good snippet length.

Canonical found: https://double-slash.dev/

Favicon tag found, but file is missing or inaccessible (404).

Fix: Ensure https://double-slash.dev/favicon.png returns HTTP 200 and matches your favicon link tag.

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

Language declared as "fr-FR".

Exactly one H1 found: "le podcast des developpeurs web".

Valid heading flow across 13 headings.

All 6 images include alt text.

Page is served over HTTPS.

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.

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

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

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.

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

Server response headers do not expose version tokens.

Domain does not appear to be behind Cloudflare.

Loaded in 0.45s (perceived).

0 scripts and 7 styles may block rendering.

• • style: https://double-slash.dev/_nuxt/entry.DdKQ-U6C.css
• • style: https://double-slash.dev/_nuxt/useLocalDate.CbSA5Mqe.css
• • style: https://double-slash.dev/_nuxt/Header.DJnC-Ych.css
• • style: https://double-slash.dev/_nuxt/index.meftxFbs.css
• • style: https://double-slash.dev/_nuxt/UpButton.L33wR_nb.css
• • style: https://double-slash.dev/_nuxt/VideoPlayer.DNKFnCVX.css
• • style: https://double-slash.dev/_nuxt/_slug_.D2p0O1Q0.css

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

46 text resources look uncompressed.

• • https://double-slash.dev/_nuxt/index.meftxFbs.css (text/css; charset=UTF-8)
• • https://double-slash.dev/_nuxt/useLocalDate.CbSA5Mqe.css (text/css; charset=UTF-8)
• • https://double-slash.dev/_nuxt/uGBSiBds.js (application/javascript; charset=UTF-8)
• • https://double-slash.dev/_nuxt/Header.DJnC-Ych.css (text/css; charset=UTF-8)
• • https://double-slash.dev/_nuxt/Byr2UvQR.js (application/javascript; charset=UTF-8)
• • https://double-slash.dev/_nuxt/Dkkm9jNy.js (application/javascript; charset=UTF-8)
• • https://double-slash.dev/_nuxt/-0T6kHX4.js (application/javascript; charset=UTF-8)
• • https://double-slash.dev/_nuxt/CxxPu7qM.js (application/javascript; charset=UTF-8)
• • https://double-slash.dev/_nuxt/UpButton.L33wR_nb.css (text/css; charset=UTF-8)
• • https://double-slash.dev/_nuxt/CO-QHm_q.js (application/javascript; charset=UTF-8)
• • https://double-slash.dev/_nuxt/DnkfjnaJ.js (application/javascript; charset=UTF-8)
• • https://double-slash.dev/_nuxt/El4b935x.js (application/javascript; charset=UTF-8)
• • https://double-slash.dev/_nuxt/_slug_.D2p0O1Q0.css (text/css; charset=UTF-8)
• • https://double-slash.dev/__nuxt_island/Duration_yRpt6cRUBVus81ZzE9PHibAGCH4rUlqwwL02qsFfjo.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_ACwHSubuVt4ssyiCYAd8ueVluHrfOxjweyTonq3vGx0.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_auWLuOyS6OnRpahpmJtLFMJI4W8zGwdlDXI7mL8NuA.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_lt5Sqc22FU8fpZ9pxxYH4VUgQPoNdX2nZIwzBkHF4M.json (application/json)
• • https://double-slash.dev/__nuxt_island/Brand_bAcjTzQpW6OVpFK319jfMki97vH1GrZiqHmeI7Xg4o.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_WQuCrsv48rz5mIuh5PD4KdO71CDlESbU5EbK5LXoMg.json (application/json)
• • https://double-slash.dev/__nuxt_island/Brand_dlIOZD2O03VXPoFYukMOJnSnZRMTmJ0YwMKY5fNK8.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_6DpBmUHzEWIUhabT3SOXv9B28FVbN2yhtqSbse1Wb8.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_Z7Ja893nx66IJDfrkVoIWgo6ihZ7eiaIF3E2ugCuNno.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_2LDBVkApvUdrRU1ZxHsy55vtQxfIzk6GhnPBTP00JFU.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_o93lnRPhkTiVbi9ad472awVudj7z4HNm97wMwJKuc.json (application/json)
• • https://double-slash.dev/__nuxt_island/Duration_RBwJCLegoCZw17wV1oKmUudN9syNP12JOB8YOCuhAw.json (application/json)
• • ...and 21 more

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

Found robots.txt (200).

Found sitemap (200) at https://double-slash.dev/sitemaps.xml.

No robots meta tag defined.

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

All 0 controls are labeled.

Missing landmarks: nav.

Fix: Use semantic regions (<header>, <nav>, <main>, <footer>) for navigation and assistive tech.

12 interactive elements appear smaller than 48px.

• • a.flex.items-center (Voir tous les épisodes) - 768x28px
• • a (Twitter) - 20x20px
• • a (Github) - 20x20px
• • a (Goodmotion) - 20x20px
• • a (Twitter) - 20x20px
• • a (Github) - 20x20px
• • a (alexduval.fr) - 20x20px
• • a.flex.items-center (Lire l'article : Faire tourner une IA en local en 2026: outils, modèles et confi) - 736x28px
• • a.flex.items-center (Lire l'article : Vibe Coding, BMAD, Spec-Driven: développer avec l'IA est-il vra) - 736x28px
• • a.flex.items-center (Voir tous les articles) - 736x28px
• • a.inline-flex.items-center (Code source du site) - 141x16px
• • a.inline-flex.underline (llms.txt) - 41x16px

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

Missing og:title or og:description.

Fix: Add og:title and og:description tags to control social preview text.

og:image exists but is not an absolute URL.

Fix: Use an absolute URL in <meta property="og:image">.

twitter:card is missing.

Fix: Add <meta name="twitter:card" content="summary_large_image"> for better previews on X.

JSON-LD schema detected.

Manifest or Apple touch icon is missing.

Fix: Link your web app manifest and apple-touch-icon for improved install/share experiences.

3 social preview quality issues detected.

• • ISSUE: og:description should typically be between 50 and 200 characters.
• • ISSUE: Use an absolute URL for og:image or twitter:image.
• • ISSUE: twitter:card is missing.
• • 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.

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

Checked 29 links. No broken internal links found.

1 external links returned errors or timed out.

• • https://bsky.app/profile/double-slash.dev (HTTP 404)

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

All 34 links use non-empty href values.

Largest Contentful Paint: 0.45s.

Cumulative Layout Shift: 0.007.

Total Blocking Time estimate: 393ms.

Fix: Reduce heavy JavaScript work, split long tasks, and defer non-critical scripts.

No failed CSS/JS/image/font/media requests detected.

1 JavaScript runtime issues detected.

• • Hydration completed but contains mismatches. [https://double-slash.dev/_nuxt/DKjoneJj.js:2]

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