Création de site web à Lille : La machine à site

What Dr Urls found on lamachineasite.fr

From the audit of their public home page on 23/10/2026, worst first. Each links to what it means and how it is fixed.

• high
  Video without captions

  WCAG 1.2.2 requires captions for all prerecorded audio content in synchronized media.

• medium
  Above-fold images not prioritized

  The Largest Contentful Paint (LCP) element is often a hero image.

• medium
  Cache-Control header missing

  Proper caching prevents browsers from re-downloading unchanged resources, dramatically improving repeat visit performance.

• medium
  Image file too large (>500 KB)

  Images typically account for 50-75% of a page's total weight.

• medium
  Link has empty anchor text

  Anchor text is one of the strongest signals search engines use to understand the content of the linked page.

• medium
  Scripts without async or defer

  Synchronous scripts halt HTML parsing while the browser downloads and executes them.

• medium
  Too many external JavaScript files

  Each external script requires a DNS lookup, TCP connection, and HTTP request.

• low
  ETag header missing on resources

  Without ETags, browsers cannot efficiently validate whether cached resources have changed.

• low
  Excessive DOM nesting depth

  Deeply nested DOM trees increase the complexity of CSS selector matching and layout calculations.

• low
  Images not using modern format

  WebP images are 25-35% smaller than equivalent JPEG images, and AVIF offers even greater savings.

• low
  Missing preconnect hints for critical origins

  Each new origin connection requires DNS resolution, TCP handshake, and TLS negotiation, adding 100-300ms of latency.

• low
  X-Content-Type-Options header missing

  Without this header, browsers may interpret files as a different content type than intended, which can lead to XSS attacks when a malicious file is interpreted as executable scrip…

6 security findings are not listed on this public page; the site's owner sees them in a full audit after claiming it.