C Beautifier

Format and beautify C code online with proper indentation and brace placement. Paste C code and get clean, readable output following standard C conventions.

Input

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Output

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What is C Beautifier

Last reviewed: April 18, 2026

C is a low-level, compiled programming language that underpins operating systems, embedded systems, and the runtimes of most other modern languages.

C Beautifier is an online tool that helps you format and beautify C.

It reformats C so the pasted content is easy to scan, diff, and share, no manual whitespace cleanup required.

Why use it

Make C easier to read, review, and debug.
Standardize C spacing and structure before sharing or committing output.
Clean up pasted C payloads from logs, APIs, or config files faster.
Avoid manual C formatting work when you need copy-ready output.

Example (before/after)

Before formatting

int max(int a,int b){if(a>b){return a;}return b;}

After formatting

int max(int a, int b)
{
  if (a > b) {
    return a;
  }

  return b;
}

Common errors

Invalid syntax

The tool cannot process input that already contains broken syntax or malformed structure.

Fix: Check the pasted content first and correct the syntax error closest to the reported failure point.

Incomplete pasted input

Partial snippets often fail when opening and closing characters are missing.

Fix: Paste the full block or file so the tool can evaluate the complete structure.

Wrong content type

Formatting or validating the wrong format produces misleading errors.

Fix: Make sure the content matches the tool you are using before processing it.

FAQ

When should I use C Beautifier instead of a CLI or library?

Reach for C Beautifier when you need to format and beautify C for a quick check, debug session, code review, or ticket comment — a CLI or library is better for scripted pipelines, but C Beautifier removes the setup cost for one-off work.

Does C Beautifier work offline after the page loads?

Most of the processing is client-side, so once the page has loaded you can keep using C Beautifier even if your connection drops — unless the tool explicitly hits a backend API for data it can't compute locally.

What does C Beautifier do?

Format and beautify C code online with proper indentation and brace placement. Paste C code and get clean, readable output following standard C conventions. Use it when you need a faster browser-based way to format and beautify C.

Is C Beautifier free to use?

Yes. C Beautifier is a free browser-based tool — no sign-up, no watermark, no rate limits for typical developer workflows.

Does C Beautifier send my data to a server?

Almost all of the processing runs client-side in your browser, so pasted input stays on your device unless the tool explicitly calls an external API.

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