Free Compression Checker — Verify Gzip and Brotli Compression
Check whether your server is serving Gzip or Brotli compressed assets to reduce transfer sizes and improve load times.
Free — no account required for a single check. Sign up for continuous monitoring →
What the Compression Checker checks
Gzip compression enabled
Brotli compression enabled
Uncompressed resources identified
Potential bytes saved per resource
Content-Encoding headers
Server compression configuration
How it works
Fetches key page resources with Accept-Encoding headers and checks response Content-Encoding to verify compression is active.
Monitor continuously — not just once
This free tool runs a one-off check. AuditJet monitors your site on a schedule — alerting you when scores change, before performance regressions affect your rankings and revenue.
Compression Checker — FAQ
Is the Compression Checker free?
Yes — Compression Checker is completely free to use. No account required for a single-URL check.
How does the Compression Checker work?
Fetches key page resources with Accept-Encoding headers and checks response Content-Encoding to verify compression is active.
What does the Compression Checker check?
Gzip compression enabled. Brotli compression enabled. Uncompressed resources identified. Potential bytes saved per resource. Content-Encoding headers. Server compression configuration.
How is this different from Google PageSpeed Insights?
Google PageSpeed Insights is a one-off manual tool. AuditJet adds continuous monitoring, regression alerting, and revenue impact on top of the same performance analysis — so you're notified when scores change, not just when you remember to check.