What it is
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. No gzip/brotli. Larger transfers, slower loads. Enable compression at server/CDN.
Why does uncompressed resources matter for AI search?
Larger transfers, slower loads.
How do you fix it?
Enable compression at server/CDN.
How do you 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.
Which ranking and citation factors does it touch?
Compression directly reduces transfer size and load time, supporting Core Web Vitals. It is one of the cheapest speed wins.
What is the impact?
Low-medium. Inferred.
What is the evidence?
Compression improves load performance. web.dev, Core Web Vitals (Google)
Frequently asked questions about uncompressed resources
What does "Uncompressed resources" mean?
No gzip/brotli.
How do you fix uncompressed resources?
Enable compression at server/CDN.