1.5 Performance & Core Web VitalsMediumInferred
Uncompressed resources
Without gzip or brotli, text assets travel uncompressed and far larger than they need to be. Compression is a server setting that typically cuts text payloads by seventy percent or more.
What it is
No gzip/brotli.
Why it matters
Larger transfers, slower loads.
How to fix it
Enable compression at server/CDN.
How to find it on your site
- Check response headers for content-encoding: gzip or br with curl -I or DevTools.
- Confirm your server or CDN compresses text assets.
- Enable brotli or gzip for HTML, CSS, JS and other text types.
- Re-test the headers to confirm compression is active.
Cross-reference to ranking and citation factors
Compression directly reduces transfer size and load time, supporting Core Web Vitals. It is one of the cheapest speed wins.
Impact
Low-medium. Inferred.
Evidence
Compression improves load performance. web.dev, Core Web Vitals (Google)