Nginx Config Compressor

Nginx config compression removes all developer-facing content from an Nginx configuration file — comments, blank lines, and trailing whitespace — that the Nginx server ignores when loading the config. Nginx uses the # character for single-line comments (the only comment type in Nginx config syntax). However, a # inside a quoted string value — such as in a log_format directive or a map block — is part of the directive value and must not be removed. Our nginx config compressor correctly tracks quoted string boundaries before removing comments, ensuring directive values are never modified.

1. 1Paste or upload your Nginx config: Paste any Nginx config — nginx.conf, site configs, snippets, or upstream definitions — or upload a .conf or .nginxfile. Use the "Load sample" button to try the compressor with a realistic production Nginx config.
2. 2Configure compression options:Toggle any of the 5 compression options. Enable "Normalize indentation" to reformat the config with consistent 4-space brace-aware indentation. All processing happens locally in your browser — your Nginx config never leaves your device.
3. 3Copy or download the compressed config: The compressed output appears in the right panel. Copy it to clipboard with one click, or download as abacktools-nginx.conf. The stats bar shows original size, compressed size, bytes saved, reduction percentage, and lines removed.

• Comments (#): All # comments are removed — from the # character to the end of the line. The newline is preserved to maintain line structure. A # inside a quoted string value is never removed.
• Blank lines: Empty lines and lines containing only whitespace are removed. Multiple consecutive blank lines can be collapsed to a single blank line to preserve visual section separation between server blocks.
• Trailing whitespace: Spaces and tabs at the end of each line are stripped. This is the most common source of invisible bytes in Nginx configs edited with auto-indenting editors.
• Quoted string values preserved: Content inside double-quoted and single-quoted directive values — including log_format strings, map values, and add_header values — is never modified. The compressor tracks all string boundaries character by character.

The optional indentation normalization feature reformats the Nginx config with consistent 4-space indentation based on brace depth. It tracks { and } characters to determine the current nesting level and applies the correct indentation to each line. This is useful for standardizing configs from different sources — for example, when merging configs from multiple servers into a single config management repository. Note that indentation normalization runs after comment removal, so the output is both comment-free and consistently formatted.