GZIP vs Brotli Detection
Accurately identifies GZIP, Brotli (`br`), Deflate, and Zstandard without reporting Brotli as GZIP.
Measured Payload Savings
Compares uncompressed baseline vs compressed response bytes without fabricated estimates.
Negotiation Matrix
Tests server responses across `Accept-Encoding: gzip`, `br`, and `identity` headers.
Inspecting Server Content-Encoding…
Executing Content-Encoding negotiation and measuring uncompressed vs compressed transfer payload sizes.
Compression Status
Encoding Algorithm
Brotli (br)
Payload Transfer Size
0 KB
Bandwidth Savings
0%
Measured Bandwidth & Compression Savings
Transfer Payload Comparison
Uncompressed Baseline:0 KB
Compressed Transfer Payload:0 KB
Bytes Saved:0 KB
Bandwidth Reduction Ratio
Compression Ratio: 1.0x smaller
Content-Type Suitability
MIME Type:
text/htmlSuitability: High Compression Benefit
Server Latency & Header
Response Time: 0 ms
Content-Encoding Header:
brContent Negotiation Matrix (`Accept-Encoding` vs Response)
| Requested `Accept-Encoding` | Server Response `Content-Encoding` | Status Code | Transferred Size |
|---|---|---|---|
| Select "Full Matrix Test" in dropdown and click Check Compression to execute. | |||
Server Response Headers Inspection
| Header Key | Raw Header Value | Significance |
|---|
Performance Findings & Diagnostics
Modern browsers support both Brotli (`br`) and GZIP (`gzip`). Brotli provides up to 15–20% higher compression efficiency than standard GZIP for text assets.
Why GZIP Compression Matters for Web Performance
GZIP Compression is a web server technique that compresses HTML, CSS, and JS files before transmitting them over the network. Enabling GZIP reduces bandwidth transfer payload by up to 70-80%, accelerating page load times and improving mobile SEO rankings.
Frequently Asked Questions (FAQ)
Brotli is a newer compression algorithm developed by Google that provides 15-20% better compression than GZIP.
On Apache, enable `mod_deflate` in `.htaccess`. On Nginx, enable `gzip on;` in `nginx.conf`.
