GZIP Checker

Enter Website URL

Auditing server response headers...

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Uncompressed Size

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Compressed Size

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Data Saved

Server Response Header Audit:

HTTP/1.1 200 OK
Content-Encoding: gzip
Vary: Accept-Encoding
Server: Nginx/Cloudflare

What is GZIP Compression and how to check it?

GZIP is a file format and software application used for file compression and decompression. When enabled on a web server, it compresses your HTML, CSS, and JavaScript files before sending them to the browser, significantly reducing page load time.

URL Input: Paste your website address into the checker.
Analyze: Our tool will simulate a browser request to see if the server returns a content-encoding: gzip header.
Review Stats: If enabled, you will see an estimation of how many kilobytes were saved.
Optimize: If disabled, contact your hosting provider or update your .htaccess file to enable compression immediately.

Key Features

Speed Performance

Verify that your site is loading as fast as possible by utilizing server-side compression algorithms.

SEO Optimization

Google prioritizes fast websites. GZIP is a fundamental requirement for passing Core Web Vitals audits.

Privacy Secured

We check public headers only. No proprietary server information or user data is ever accessed or stored.

Frequently Asked Questions

Does GZIP affect website ranking?

Yes, indirectly. GZIP makes your site load faster, and "Page Speed" is a confirmed ranking factor in Google's algorithm. Faster sites provide a better user experience and rank higher.

What is the difference between GZIP and Brotli?

Brotli is a newer compression algorithm developed by Google that often provides even smaller file sizes than GZIP. Most modern browsers and servers now support both.

How do I enable GZIP on my website?

If you use Apache, you can add a code snippet to your .htaccess file. If you use Nginx, you enable it in the nginx.conf file. Most CDN providers like Cloudflare enable GZIP by default.