Check GZIP compression

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Check GZIP Compression – Verify Your Website's Compression Is Working

MerkSEO's GZIP Compression Checker tests any URL to confirm whether GZIP compression is enabled on the server. View the compressed and uncompressed file sizes, compression ratio, response headers, and overall compression status in one clear report.

GZIP compression can reduce page sizes by up to 70%, significantly improving load times and Core Web Vitals scores. Use our free tool to verify your web server is delivering compressed responses correctly, troubleshoot compression issues, and ensure your site is fully optimized for speed and SEO performance.