Compression Tester

Enter a URL to run some compression tests against it.

Compression Summary

The table summarizes the compression supported by the server and the resulting payload size.
Compression Encoded Size (KB) Compression Level Guess *
Uncompressed - -
Gzip
Brotli
zStandard
* Compression levels are estimated based on comparisons to compression test results.

Gzip

Gzip Compression (levels 1-9)
Level Size Ratio Time

Brotli

Brotli Compression (levels 1-11)
Level Size Ratio Time

zStandard

zStandard Compression (levels 1-19)
Level Size Ratio Time