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Nginx Config Formatter & Beautifier

開発者

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入力

自動処理

出力

クライアント側

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ガイド

Nginx Config Formatter & Beautifier

Format and beautify Nginx configuration files with consistent indentation, block nesting, and syntax validation. Paste your nginx.conf content and instantly see properly formatted output with a structural overview of your server blocks, locations, and upstreams. Includes common snippet templates and a directive reference.

使い方

Paste your Nginx configuration into the input area. The formatter processes it instantly — indenting block directives (http, server, location, upstream, events, map, geo, if), normalizing comments, and validating syntax. Configure indent style (2 spaces, 4 spaces, or tabs), brace positioning, comment normalization, and blank line handling. View the structure tree to understand your config hierarchy. Copy the formatted output or download as nginx.conf.

特徴

Block Indentation — Automatically indents nested directives inside http, server, location, upstream, events, map, geo, if, types, limit_except, and other Nginx block directives.
構造ビュー — Tree/outline of your config hierarchy: http → server (with server_name and listen port) → location paths, upstream names. Helps visualize complex multi-server configurations at a glance.
構文検証 — Detects unclosed braces, extra closing braces, missing semicolons on directive lines, duplicate server_name values, and common misconfigurations. Color-coded with line numbers.
フォーマットオプション — Configurable indent style (2/4 spaces, tabs), brace style (same line or next line), comment normalization, blank line collapsing, semicolon spacing.
Common Snippets — Quick-insert templates: reverse proxy, static file serving, SSL/TLS, rate limiting, gzip compression, security headers, PHP-FPM fastcgi, WebSocket proxy.
Directive Reference — Collapsible reference with common Nginx directives, block types, and location matching rules (exact, prefix, regex).
エクスポート — Copy formatted output or download as nginx.conf file.

Nginx Block Types

http: Main context for HTTP server configuration. server: Defines a virtual host — identified by server_name and listen directives. location: Maps URI patterns to configuration — supports exact match (=), prefix (^~), regex (~, ~*), and default matching. upstream: Defines a group of backend servers for load balancing. events: Connection processing configuration. map/geo: Variable mapping blocks for conditional configuration.

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What is nginx.conf?

nginx.conf is the main configuration file for the Nginx web server. It uses a block-based syntax with directives ending in semicolons and nested blocks enclosed in curly braces. The configuration controls how Nginx handles HTTP requests, serves files, proxies to backend servers, handles SSL/TLS, and more. The file is typically located at /etc/nginx/nginx.conf on Linux systems, with additional configuration in /etc/nginx/conf.d/ or /etc/nginx/sites-enabled/.

How does Nginx location matching work?

Nginx evaluates location blocks in a specific order: first, exact matches (= /path) — if found, stop searching. Second, prefix matches (^~ /path) — the longest matching prefix wins and stops searching. Third, regular expression matches (~ for case-sensitive, ~* for case-insensitive) — the first regex match in config order wins. Finally, if no regex matches, the longest non-prefixed prefix match is used. Understanding this order is critical for correct Nginx configuration — the formatter’s structure view helps visualize your location hierarchy.

What are common Nginx configuration mistakes?

Common mistakes include: missing semicolons at the end of directives (Nginx silently fails), unclosed braces creating nested blocks where none were intended, incorrect location matching order (regex overriding intended prefix matches), not using ‘try_files’ for single-page apps (causing 404s on client-side routes), placing ‘return’ or ‘rewrite’ in wrong contexts, and forgetting to reload Nginx after config changes (nginx -s reload). This formatter’s validation catches structural issues like unclosed braces and missing semicolons.

私の設定データはサーバーに送信されますか？

No — all formatting and validation happens in your browser using JavaScript. Your Nginx configuration never leaves your device. This is critical because nginx.conf files contains sensitive information: server names, internal paths, upstream server addresses, SSL certificate paths, and security configurations. All processing runs entirely client-side with no API calls or data storage.

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