Code Indentation Tool

What Does This Tool Do?

It detects each line's current indentation level and re-applies it using your chosen indentation style (a specific number of spaces, or tabs) - a simple, language-agnostic way to normalize indentation.

Why Use This Tool?

Team members using different editor settings (tabs vs. spaces, 2 vs. 4 spaces) produce inconsistently-indented files - this tool normalizes a whole file to one consistent style in one pass.

How to Use It

1. Paste your code.
2. Choose spaces (and how many) or tabs.
3. Copy the re-indented result.

Limitations

This works on relative indentation levels detected from your input - it doesn't validate or understand the syntax of any particular programming language.

Example

Code indented with tabs:

if (ready) {
	start();
	if (debug) {
		log("started");
	}
}

re-indented with 2 spaces becomes:

if (ready) {
  start();
  if (debug) {
    log("started");
  }
}

Common Conventions

Prevent the Problem

Add an .editorconfig file to your repository so every editor uses the same settings:

root = true

[*]
indent_style = space
indent_size = 4

[Makefile]
indent_style = tab

For Python code, where indentation defines blocks, use the Python Formatter. For full formatting, try the Code Beautifier.