Brotli Compression for 1C-Bitrix: Step-by-Step Setup on nginx and Apache

A 1C-Bitrix site with a catalog of 50,000 products is a typical case where Gzip is already enabled but pages still load in 4–5 seconds on 3G. Enabling Brotli for 1C-Bitrix reduces response size by up to 20% without changing a single line of code. The Brotli setup for 1C-Bitrix is straightforward with our guide. For CSS and JS the difference is even more noticeable: a 400 KB bundle after Gzip is 110 KB, after Brotli — 90–95 KB. On slow connections this saves seconds, cuts traffic costs by up to 30%, and improves e‑commerce conversion rates. Traffic savings can reach 30%, which with high traffic gives significant cost reduction. For a typical Bitrix site with 100 GB monthly traffic, Brotli can save approximately $50/month on CDN costs, totaling $600 annually. We implement Brotli on projects from landing pages to complex catalogs and always get a measurable speed boost.

According to Google documentation, Brotli provides 20% better compression than Gzip for text content. CDN traffic savings reach 20%.

Why Brotli is more effective than Gzip

The Brotli algorithm uses LZ77 and Huffman coding with a 120 KB static dictionary, unlike Gzip's 32 KB, giving an advantage on repetitive data. A typical Bitrix HTML template with repeating classes and comments compresses 18% tighter. The cost is slightly higher compression time at high levels. We recommend brotli_comp_level 6 for dynamic content: a balance between compression and CPU load. Level 11 (+5–8% compression) is justified only for pre-compressed static files. Brotli at level 6 compresses HTML 1.1 times better than Gzip level 6, and at level 11 it is 1.2 times better.

Comparison table:

How to set up Brotli for 1C-Bitrix

Step-by-step guide

1. Install the ngx_brotli module
2. Configure nginx
3. Prepare pre-compressed static files
4. Verify it works

Installing the Brotli module for nginx

Nginx does not support Brotli out of the box — you need the ngx_brotli module. Two options:

# Compile from source or use a ready package cd /usr/local/src git clone --recurse-submodules https://github.com/google/ngx_brotli.git nginx -v wget http://nginx.org/download/nginx-1.24.0.tar.gz tar -xzf nginx-1.24.0.tar.gz cd nginx-1.24.0 ./configure --with-compat --add-dynamic-module=/usr/local/src/ngx_brotli make modules cp objs/ngx_http_brotli_filter_module.so /etc/nginx/modules/ cp objs/ngx_http_brotli_static_module.so /etc/nginx/modules/ # Alternative for Debian/Ubuntu: # add-apt-repository ppa:ondrej/nginx # apt update # apt install libnginx-mod-http-brotli 

nginx configuration for Bitrix

# /etc/nginx/nginx.conf — in the http block load_module modules/ngx_http_brotli_filter_module.so; load_module modules/ngx_http_brotli_static_module.so; http { # Brotli dynamic compression brotli on; brotli_comp_level 6; brotli_types text/html text/css text/javascript application/javascript application/json application/xml text/xml image/svg+xml font/woff2; # Static pre-compressed files brotli_static on; # Gzip as fallback for browsers without Brotli gzip on; gzip_comp_level 6; gzip_types text/html text/css application/javascript; gzip_vary on; } 

brotli_static on — nginx looks for assets/app.js.br next to assets/app.js. If found, it serves the pre-compressed archive without CPU cost. This is especially useful for Bitrix static — JS bundles and CSS builds that rarely change.

Pre-compressed files for Bitrix static

Prepare .br files for CSS/JS bundles in advance:

# Install brotli CLI and compress all JS/CSS apt install brotli find /var/www/bitrix/public -name "*.js" -o -name "*.css" | while read f; do brotli --best --keep "$f" done 

Add to your deploy script: after frontend build, automatically generate .br files.

Verification

curl -sI -H "Accept-Encoding: br" https://site.ru/bitrix/js/main/core/core.js | grep -i content-encoding # Expected response: Content-Encoding: br curl -s -H "Accept-Encoding: identity" https://site.ru/css/app.css | wc -c curl -s -H "Accept-Encoding: br" https://site.ru/css/app.css | wc -c 

Apache mod_brotli

If Bitrix runs on Apache without an nginx frontend:

LoadModule brotli_module modules/mod_brotli.so <IfModule mod_brotli.c> AddOutputFilterByType BROTLI_COMPRESS text/html text/css application/javascript BrotliCompressionLevel 6 </IfModule> 

mod_brotli is included in Apache 2.4.26+. On older Bitrix environment servers (Apache 2.2) Brotli is not available — an upgrade or migration to nginx is needed.

What's included in the setup

Our specialists, with over 5 years of experience and 40+ Bitrix projects, deliver:

1. Audit – Check web server configuration, software versions, permissions. Result: list of required changes.
2. Module installation – Compile or install ngx_brotli package. Result: module added to nginx.
3. Compression setup – Configure brotli, gzip fallback, pre-compressed static. Result: working compression on all content types.
4. Testing – Check with curl, PageSpeed, VPN emulation of slow networks. Result: before/after metrics report.
5. Documentation – Deploy instructions, compression level recommendations. Result: delivered artifacts.
6. Support – Monitoring for 2 weeks. Result: stable operation.

Deliverables include configuration files, documentation, and 2 weeks of support. Timeline: 1 to 3 days depending on infrastructure complexity. Cost is calculated individually after a preliminary assessment. For a basic nginx configuration, setup cost starts from $200. Contact us for a free consultation — we will discuss your server and select the optimal configuration. Order Brotli setup and get a guaranteed result.

Common mistakes when setting up Brotli

• Missing brotli_static module. If brotli_static on is not set, nginx will not look for pre-compressed files and will compress dynamically, loading the CPU.
• Wrong MIME types. image/svg+xml or font/woff2 not included — they remain uncompressed. Check the full list in the configuration.
• Missing Gzip fallback. Browsers without Brotli support (older ones) will not get compressed content. Always enable gzip on with gzip_vary on.
• High compression level for dynamic content. Level 11 increases compression latency. For dynamic pages level 6 is sufficient.

On Bitrix projects we typically combine Brotli for modern browsers and Gzip for fallback. This gives maximum coverage without performance loss. For Brotli setup on 1C-Bitrix, our team follows a step-by-step approach: first we install the module, then configure nginx, and finally test.

Why trust us with the setup

We implement Brotli with a guarantee of measurable speed improvement: you will get before/after comparison graphs. The team has dozens of successful acceleration cases for 1C-Bitrix sites. We only use official repositories (see Wikipedia and GitHub). No third-party scripts — only proven tools. Submit a request for an infrastructure audit and get a personalized configuration.