A deep dive comparison of Brotli and Gzip compression, their performance, file size reduction, and browser support.

Brotli vs Gzip: Which Compression Algorithm Wins in 2026?

Web performance is everything. One of the easiest ways to speed up your website is by enabling server-side compression, which compresses HTML, CSS, and JavaScript files before transmitting them to visitors.

While Gzip has been the standard for decades, Google’s Brotli has emerged as a major competitor. Let’s compare both algorithms and see which one you should use.

The Comparison

• File Sizes: Brotli generally achieves 15-20% higher compression density than Gzip, resulting in smaller files.
• Speed: Gzip is slightly faster at compressing on the fly, but Brotli is extremely fast at decompressing on the client side.
• Support: Both are widely supported by all modern browsers.

For static assets, Brotli is the clear winner because smaller files load much faster and improve page scores.