Gzip Compression

Code

# http block
gzip on;
gzip_vary on;
gzip_proxied any;
gzip_comp_level 6;
gzip_min_length 1024;
gzip_types
    text/plain
    text/css
    text/xml
    application/json
    application/javascript
    application/xml+rss
    application/atom+xml
    image/svg+xml;

# Brotli (requires ngx_brotli module)
# brotli on;
# brotli_comp_level 6;
# brotli_types text/plain text/css application/json;

# Verify with:
# curl -sH 'Accept-Encoding: gzip' -I https://example.com/file.css

Explanation

gzip compresses text responses, dramatically reducing transfer size for HTML, CSS, JS, and JSON. gzip_comp_level balances CPU versus compression ratio; 6 is a sane default. Set gzip_min_length to skip tiny responses where overhead exceeds savings, and gzip_types to opt in non-text MIME types.

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