Server compression checker

What is a Server Compression Checker?

The Server Compression Checker requests a webpage while advertising support for gzip, deflate, and Brotli, then reports the Content-Encoding header the server actually responds with, confirming whether responses are being compressed at all.

Why Compression Matters

• Smaller transfer sizes — Text-based responses like HTML, CSS, and JavaScript typically compress by 60-80%, directly cutting page load time.
• Bandwidth savings — Less data transferred means lower bandwidth costs for high-traffic sites and faster loads on slow connections.
• Nearly universal support — Every modern browser supports gzip and Brotli, so there's essentially no downside to enabling compression on the server.