Brotli Compressor

What Can the Brotli Compressor Do?

The Brotli Compressor is a pure frontend online tool that supports Brotli format compression and decompression of text and files. Brotli is an open-source compression algorithm developed by Google, typically achieving 15-25% better compression ratios than Gzip, and is supported by all major browsers. The tool provides 11 quality levels (1-11) to balance compression speed and ratio. All data is processed locally in your browser and never leaves your device.

Core Features

• Text Compression: Paste any text content, one-click Brotli compression, output Base64 encoding or download .br file
• File Compression: Drag and drop any file, download compressed .br file
• Text Decompression: Paste Base64-encoded Brotli data or upload .br file, one-click decompression
• Adjustable Quality: 1-11 compression levels, level 1 fastest, level 11 highest ratio
• Compression Stats: Shows original size, compressed size, compression ratio, space saved

How to Use

Step 1: Select "Compress" or "Decompress" mode. For compression, input raw text or drag a file. For decompression, input Base64 data or drag a .br file.

Step 2: In compress mode, adjust the quality level slider (1-11). Default level 6 is recommended.

Step 3: Click "Compress" or "Decompress" button, or use Ctrl+Enter shortcut.

Step 4: View compression stats and results. Click "Copy Base64" or "Download .br File" to save.

Use Cases

Web Performance Optimization

Pre-compress static assets (HTML/CSS/JS/fonts), configure Nginx/Apache to serve .br files directly, reducing transfer size by 15-25%.

API Data Compression

Compress API response data to reduce network transfer time, especially beneficial for mobile and high-latency networks.

File Storage Optimization

Compress log files, backup data, and other large files. Brotli saves 15-25% more space than Gzip.

CDN Configuration Verification

Verify Brotli compression effectiveness, compare compression ratios at different quality levels, choose optimal configuration.

Technical Background

Brotli was released by Google in 2015, based on LZ77 algorithm, Huffman coding, and second-order context modeling. Compared to Gzip (based on DEFLATE), Brotli uses a larger dictionary and more complex algorithms to achieve higher compression ratios. In HTTP transmission, Brotli compression is identified by Content-Encoding: br. Nginx requires the ngx_brotli module, Apache uses mod_brotli. Quality level recommendations: level 4-6 for dynamic content (balanced speed), level 11 for static asset pre-compression (maximum ratio).

FAQ