Code cleanup

Python Formatter

Normalize indentation, remove trailing whitespace and clean Python snippets without sending code to a backend.

Python indentation guide Open YAML formatter

Input

0 bytes

Result

Ready

This lightweight browser formatter cleans whitespace and indentation. It does not execute Python or replace Black/ruff for full project formatting.

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Reference notes

Python cleanup for quick snippets

Whitespace safe

The formatter expands tabs, trims trailing whitespace and keeps a final newline so snippets paste cleanly into editors.

Indentation aware

Basic checks flag mixed tabs/spaces, sudden indentation jumps and suspicious dedents before you copy the result.

Local processing

Code is handled by client-side JavaScript. Formalint does not run Python code or upload snippets to a server.

Frequently asked

Python cleanup questions

Why does mixed tab and space indentation break Python?

Python uses indentation to define code blocks. Mixing tabs and spaces can produce an IndentationError, or worse, code that runs but executes a different block than intended depending on the editor's tab width setting.

Does this tool reformat code like Black or autopep8?

This tool focuses on indentation and trailing whitespace cleanup. It does not enforce PEP 8 line length, import ordering, or string quote style the way a full formatter like Black does.

Will it change my code's logic?

No. Only whitespace, indentation consistency, and trailing spaces are adjusted. Statements, variable names, and logic are left untouched.