Server & Network

GZIP & Speed Test Free

Test your URL's GZIP/Brotli compression. See the compressed & decompressed size, savings percentage, and server response time (ms).

GZIP & Speed Test
Information

About GZIP & Speed Test Free

The speed of your web pages is a critical factor for both user experience and Google rankings. Server-side optimization (PSC) is enabled. GZIP or Brotli (br) GZIP compression reduces the size of HTML, CSS, and JavaScript files by 50–90%, significantly shortening page load times. This free GZIP & Speed Test tool sends a real request to the address you enter through our server and instantly shows whether compression is active, the compressed transfer size, the actual decompressed size, the percentage savings achieved, and the server's initial response time (ms).

Whether a site supports GZIP or Brotli compression, Content-Encoding The answer is understood from its title. This title gzip, br (Brotli) or deflate Compression is active if the value is met; otherwise, the content is transmitted uncompressed. (On Apache and Nginx servers) mod_deflate / gzip With this instruction, it can be easily enabled via the control panel on Cloudflare and other CDNs.

The query is performed on the server side: only. http / https Schemas are allowed, local network and private IP addresses (localhost, 192.168.x, etc.) are blocked, and the request times out in 10 seconds. The results reflect the real-time state of your site; they are not affected by browser caching.

How to use it?

Step by step

  1. The address you want to test https://example.com Enter in the format.
  2. Test it Click the button; the tool will send the request through the server.
  3. Compression active or passive?, the encoding used (gzip, br…) and compressed size visible.
  4. Open size and savings percentage See the profit concretely.
  5. Response time (ms) Use this to check how quickly your server responds.
FAQ

Frequently Asked Questions

GZIP reduces page load times by minifying HTML, CSS, and JavaScript files transferred from the server to the browser. Since Google uses page speed as a ranking factor, not activating compression can negatively impact SEO performance.

Brotli is a newer algorithm that generally provides 10–25% better compression ratios compared to GZIP. All modern browsers support Brotli, but it requires server configuration. Both are... Content-Encoding It is reported under the title: gzip or br.

If you are using Apache .htaccess to the file mod_deflate Add the directives for Nginx. gzip on; Enable the prompt. If you're using Cloudflare or a similar CDN, you can enable the speed/compression settings from the control panel. You can test again with this tool after making changes.

The tool measures the time in milliseconds between the moment our server sends a curl request to the target address and the moment the first response is received. This time includes network latency, server processing time, and time to first byte (TTFB); browser rendering time is not included.

You may not get results on servers that block bot requests, respond slowly and time out, or use invalid SSL certificates. For security reasons, queries cannot be made to private networks and local IP addresses (localhost, 127.0.0.1, 192.168.x, etc.).
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