Nginx Config Formatter

Q: Does it validate directive names?

No. It checks braces, quotes and semicolons only. Use `nginx -t` for full validation.

Format nginx configuration: one directive per line, nested blocks indented, comments and quoted strings kept. Detects unclosed blocks and missing semicolons.

Indentation

Nginx input

Output

Runs entirely in your browser. Your data is never uploaded.

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What is Nginx Config Formatter?

The Nginx Config Formatter re-indents nginx configuration files: every directive goes on its own line, blocks such as server and location are indented, and blank lines are reduced to at most one. It also reports structural mistakes – unbalanced braces, unterminated quotes and directives missing their ;.

How to use Nginx Config Formatter

Paste your nginx configuration (nginx.conf or a server block).
Choose the Indentation (4 spaces is the nginx convention).
Click Format (the output also updates while you type).
Fix any reported error, then copy or download the result.

Example

Input

server{listen 80;server_name example.com; # main
location / {root /var/www;}}

Output

server {
    listen 80;
    server_name example.com; # main
    location / {
        root /var/www;
    }
}

When to use Nginx Config Formatter

Use it to tidy configs copied from tutorials, review changes, or find the missing brace or semicolon reported by nginx -t. It checks structure only – it cannot tell whether a directive is valid in a context; always run nginx -t before reloading.

How Nginx Config Formatter works

A tokenizer splits the text into words, quoted strings ("…" and '…'), ${variables}, # comments, braces and semicolons, tracking line and column. The printer outputs each directive as its words joined by single spaces followed by ;, opens blocks with { and closes them on their own line. Comments that followed a directive on the same line stay on that line. Quoted strings and regular expressions are copied verbatim. The formatter does not know directive names, so it never changes your arguments.