Gzip Compression

Enable Gzip

http {
    gzip on;
    gzip_comp_level 6;
    gzip_min_length 256;
    gzip_types text/plain text/css application/json application/javascript;
    gzip_vary on;
}

Settings Explained

• gzip_comp_level 6 - Compression level 1-9 (1=fast, 9=best)
• gzip_min_length 256 - Don't compress files smaller than 256 bytes
• gzip_types - Which content types to compress
• gzip_vary - Add Vary header for caches

Compression Reduction

With gzip:

• HTML: 60-70% smaller
• CSS: 70-80% smaller
• JavaScript: 60-70% smaller
• JSON: 50-60% smaller

Disable for Images

gzip off;
gzip_types text/plain text/css application/json application/javascript;

# Images already compressed
location ~* \.(jpg|png|gif|woff|woff2)$ {
    gzip off;
}

Speed matters!