https://facebook.com

Technical details

• Server —
• X-Powered-By —
• Content-Type text/html; charset="utf-8"
• Encoding br
• CSP Enabled
• HSTS Enabled

Key issues

1. Render blocking requests
   0/100
   Requests are blocking the page's initial render, which may delay LCP. [Deferring or inlining](https://developer.chrome.com/docs/performance/insights/render-blocking) can move these network requests out of the critical path.
2. `[user-scalable="no"]` is used in the `<meta name="viewport">` element or the `[maximum-scale]` attribute is less than 5.
   0/100
   Disabling zooming is problematic for users with low vision who rely on screen magnification to properly see the contents of a web page. [Learn more about the viewport meta tag](https://dequeuniversity.com/rules/axe/4.11/meta-viewport).
3. Document request latency
   0/100
   Your first network request is the most important. [Reduce its latency](https://developer.chrome.com/docs/performance/insights/document-latency) by avoiding redirects, ensuring a fast server response, and enabling text compression.
4. Legacy JavaScript
   0/100
   Polyfills and transforms enable older browsers to use new JavaScript features. However, many aren't necessary for modern browsers. Consider modifying your JavaScript build process to not transpile [Baseline](https://web.dev/articles/baseline-and-polyfills) features, unless you know you must support older browsers. [Learn why most sites can deploy ES6+ code without transpiling](https://developer.chrome.com/docs/performance/insights/legacy-javascript)
5. Touch targets do not have sufficient size or spacing.
   0/100
   Touch targets with sufficient size and spacing help users who may have difficulty targeting small controls to activate the targets. [Learn more about touch targets](https://dequeuniversity.com/rules/axe/4.11/target-size).

Page assets

• CSS files 0
• JS files 0
• Images 1
• Checked image sizes 1
• Average size 1 KB

SEO files

• robots.txt Found (status 200)
• Sitemap in robots.txt Missing
• sitemap.xml Not found
• Valid XML Unknown

Advanced SEO

• Canonical URL —
• OpenGraph Missing
• Twitter Cards Not set
• Structured data (JSON-LD) None detected

SSL / TLS

• Overall Expires soon
• Notes Certificate will expire in 6 day(s).
• Host facebook.com
• Status Valid
• Valid from Oct 6 00:00:00 2025 GMT
• Valid to Jan 4 23:59:59 2026 GMT
• Days remaining 6 day(s)
• Protocol TLSv1.3 TLS 1.3
• Cipher TLS_CHACHA20_POLY1305_SHA256 (TLSv1.3)
• Issuer DigiCert Inc
• Subject *.facebook.com