Home » Developer Tools » Python Formatter
Paste messy Python and get clean readable code with normalized indentation and spacing.
Your code never leaves your browser. Everything runs locally on your device.
Inconsistent Python indentation makes code hard to read and easy to break. The Python Formatter normalizes indentation to one consistent width and tidies spacing around operators, without changing what your code does.
It works by relative depth, not by guessing: a block nested one level deeper stays one level deeper, whether your file used tabs, two spaces, or four spaces. String content is never touched. Everything runs in your browser, so your code is never uploaded to a server.
Yes, it is completely free with no sign up and no limits. You can format as much Python as you like, as often as you like.
No. Formatting only changes leading whitespace and spacing outside strings. Your logic, values, and program structure stay exactly the same.
Yes. Tabs are converted to spaces at your chosen indent width, keeping the relative depth of every block.
Lines with indentation that does not match any open block are left untouched, so the tool never guesses a depth that could change your code.
No. String content, including triple quoted strings, is copied exactly and never reformatted.
No. All formatting happens in your browser on your own device, so your code never leaves your computer.
When your Python is readable again and ready to ship smaller, try the Python minifier to remove comments and blank lines.