Free Online Python Code Formatter

Format Python to PEP 8 with autopep8

This Python code formatter cleans up messy scripts using autopep8 on the server. Paste code into the input pane, choose line length and indent size, then compare the formatted result side by side. It is ideal for homework cleanup, interview prep, code reviews, and learning PEP 8 conventions without fighting your editor settings.

When to use an online formatter

• You inherited poorly indented code and need a quick before/after view
• You are learning Python and want to see how PEP 8 reshapes spacing and line breaks
• You copied a snippet from docs or Stack Overflow and want consistent style
• You finished a quiz or challenge and want readable solution code to study

How to use this formatter

1. Paste Python into the left editor — sample code loads if the pane is empty
2. Set line length (79 or 88 cols are common) and indent size (2 or 4 spaces)
3. Pick a fix level: standard PEP 8, more fixes, or aggressive cleanup
4. Click Format or press Ctrl+Enter, then copy the output or open the free online Python IDE to run it

Privacy and server-side formatting

Unlike the IDE (which runs Python locally in your browser), formatting sends your source code to PythonSkillset servers to execute autopep8. Do not paste passwords, API keys, or proprietary production code. Use it for learning snippets, exercises, and non-sensitive practice code only.

Formatter vs IDE formatting

The IDE includes a quick Format button for in-place cleanup while you code. This page adds a dedicated split view, fine-grained autopep8 controls, and copy-friendly output — better when style is the focus. Many learners format here, then run the result in the IDE to verify behaviour.