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Python Beautifier

Normalize Python indentation — convert tabs to spaces, change indent size, and remove trailing whitespace.

Last updated: May 29, 2026

Client-Side Processing
Input Data Stays on Device
Instant Local Execution
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What is Python Beautifier?

Python Beautifier normalizes indentation in Python source files. Because Python uses indentation as syntax, the tool detects the existing indentation unit (tabs or spaces, and how many) and remaps every line to your chosen style: 2 spaces, 4 spaces (PEP 8 standard), or tabs. Triple-quoted strings are preserved verbatim to avoid altering multiline literals. It is intentionally conservative — it only adjusts whitespace and never rewrites expressions.

How to Use Python Beautifier

1

Paste Python code with inconsistent or unwanted indentation.

2

Choose your target indentation style.

3

Click Format.

4

Review the normalized output.

5

Copy or download the .py file.

Common Use Cases

  • Converting tab-indented Python scripts to 4-space PEP 8 style.
  • Normalizing indentation when pasting Python from different editors.
  • Shrinking 4-space indentation to 2 spaces for compact documentation snippets.
  • Cleaning up Python examples copied from websites that mix tabs and spaces.

Example Input and Output

Inconsistent indentation (tabs + 8 spaces) is normalized to 4 spaces.

Python with Inconsistent Indentation
def greet(name):
		if name:
				print("Hello, " + name)
		else:
				print("Hello!")
Normalized Python
def greet(name):
    if name:
        print("Hello, " + name)
    else:
        print("Hello!")

Privacy

Python code is formatted locally in the browser and is not uploaded.

Frequently Asked Questions

Does this reformat the code logic or just whitespace?

Only whitespace is changed. The tool never rewrites expressions, operators, or variable names.

Will it break my triple-quoted strings?

Triple-quoted strings (""" and ''') are preserved verbatim — their internal indentation is not changed.

Does it enforce PEP 8?

It normalizes indentation to 4 spaces by default (PEP 8 standard), but it does not enforce line length, spacing around operators, or other PEP 8 rules. Use autopep8 or black for full PEP 8 compliance.

Is my code uploaded anywhere?

No. Formatting runs entirely in your browser.

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