Matan · SEO · Performance
Response compression (SEO)
Same as technical compression, scored again because it directly changes transfer time.
Pass condition in our engine: Content-Encoding includes gzip, br or zstd.
This SEO check is part of SEO-GEO scoring 2.2.1, last updated 2026-09-18. About 90 percent of the evaluation runs on the HTML we crawl, so you can verify the same pass condition with a free report.
1. Problem description
If HTML is not compressed, every extra kilobyte is paid at text rates. Brotli typically beats gzip for HTML. CDNs can compress even when the origin does not.
2. Most common causes
- Compression enabled only for static assets, not HTML.
- Content-Encoding stripped by a proxy.
3. How to fix it
- Enable brotli or gzip for text/html.
- Confirm in response headers after a hard refresh.
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