๐ŸŒ
Pyrfecter
pyrfecter.com โ€บ format-python-code
Format Python code online ยท Pyrfecter
June 26, 2025 - If you have Python code you want to format online, look no further. Pyrfecter is an easy and secure way to format, lint, and improve your Python code all from inside your browser. Even if your code is well written Pyrfecter can help. It can even make improvements to AI-generated code!
๐ŸŒ
Code Beautify
codebeautify.org โ€บ python-formatter-beautifier
Python Formatter and Beautifier
This tool supports loading the Python File to beautify. Click on the Upload button and Select File. Python Beautifier Online works well on Windows, MAC, Linux, Chrome, Firefox, Edge, and Safari.
Discussions

Easy, free to use online formatter for Python code with configuration options?
You want a tool that's not configurable and is very opinionated, because you and anyone else that ever touches the codebase can set up a commit hook to run that tool over the whole project and you never have to think about it again. I'm telling you, formatting is not an aesthetic consideration. Stick with the strictest pep8 compatible formatter you can find. As for indent, use a tab character and configure your editor to display it as 2 spaces Edit: to clarify, strict as in as few choices left to the developer as possible. Pep8 compatible as in implements most of pep8, but that's secondary to the first point. Arguments about spaces vs tabs are the reason for my first point: that's not a conversation you have to have if your formatter just does it. More on reddit.com
๐ŸŒ r/learnpython
24
3
July 13, 2024
Most common Python linter, formatter?
I use Ruff from Astral. From the same folks, there is uv. Can also be used in a CI/CD environment. More on reddit.com
๐ŸŒ r/Python
75
66
January 19, 2025
Which code formatter do you use?
Black. We don't care that it may look bad. We don't want to argue about formatting. We know it isn't configurable, that's the point. We don't want to deal with everyone's configuration preferences. More on reddit.com
๐ŸŒ r/Python
144
68
December 21, 2022
What code formatter is the standard?
The formatter itself doesn't really matter. It's the style that it formats to that matters. PEP8 is the most popular style guide to format to by far when it comes to python. If you're not happy with autopep8, swap to a different formatter. I'm pretty sure a lottt of people use flake8. More on reddit.com
๐ŸŒ r/learnpython
3
2
October 19, 2022
People also ask

Is it safe to paste my Python code into an online formatter?
Code is sent to a secure backend over HTTPS and processed transiently for formatting. However, as a best practice you should avoid sending passwords, API keys, personal data or highly confidential business logic to any online tool. For sensitive projects, run Black locally or inside your own CI environment instead.
๐ŸŒ
encode64.com
encode64.com โ€บ home โ€บ formatters โ€บ python formatter
Free Online Python Formatter โ€“ Black & PEP 8 Style Code Beautifier ...
Will the Python formatter change how my code behaves?
No. A Black-style formatter is designed to change only the presentation of valid Python code, not its behavior. It rewrites whitespace, indentation and layout while preserving the semantics of your program.
๐ŸŒ
encode64.com
encode64.com โ€บ home โ€บ formatters โ€บ python formatter
Free Online Python Formatter โ€“ Black & PEP 8 Style Code Beautifier ...
What line length should I choose when formatting Python code?
PEP 8 suggests 79 or 99 characters, while Blackโ€™s default is 88. Many teams use 88, 100 or 120 depending on their screens and preferences. The important part is to pick a single value and apply it consistently everywhere.
๐ŸŒ
encode64.com
encode64.com โ€บ home โ€บ formatters โ€บ python formatter
Free Online Python Formatter โ€“ Black & PEP 8 Style Code Beautifier ...
๐ŸŒ
Minifier
minifier.org โ€บ python-beautifier
Python Beautifier - Format & Beautify Python Code Online
Python Beautifier & Formatter is a free online tool to format Python code by fixing indentation, spacing, and line breaks for clean, readable output.
๐ŸŒ
TutorialsPoint
tutorialspoint.com โ€บ online_python_formatter.htm
Online Python Formatter | Tutorialspoint
Online Python Formatter and Beautifier - Try online Python Code formatter and beautifier and Editor to beautify and format Python code using jQuery Plug-in
๐ŸŒ
Formatter.org
formatter.org โ€บ python-formatter
Python Formatter Online โ€“ Beautify and Format Python Code
Beautify and format Python code online to improve readability, fix indentation, and keep formatting consistent.
๐ŸŒ
Encode64
encode64.com โ€บ home โ€บ formatters โ€บ python formatter
Free Online Python Formatter โ€“ Black & PEP 8 Style Code Beautifier | Encode64
Clean up your Python code in one click with a Black-style formatter. This online tool enforces consistent indentation, spacing and line length so your scripts, APIs and notebooks stay readable, reviewable and PEP 8โ€“friendly.
๐ŸŒ
Testmuai
testmuai.com โ€บ home โ€บ free tools โ€บ python formatter & beautifier online
Python Formatter & Beautifier Online | TestMu AI
This is where a Python beautifier comes in handy; it can help you format your code to look more neat and readable while still using the same logic! Here's a simple Python program that prints "Hello, World!": ... Python Beautifier is an online ...
Find elsewhere
๐ŸŒ
ExtendsClass
extendsclass.com โ€บ python-formatter.html
Python formatter online
This Online Python formatter allows to easily format unformatted or ugly Python code.
๐ŸŒ
Codeformatting
codeformatting.com โ€บ python
Free online python code formatter - Format and beautify code.
Format and beautify your Python code instantly with our free online Python Formatter. Make your data readable, organised, and easy to debug with our python formatter. ... Just paste your Python code into the input and get ready! Any code you have copied elsewhere can be pasted in here ยท Once ...
๐ŸŒ
Vercel
black.vercel.app
Black Playground
Playground for Black, the uncompromising Python code formatter.
๐ŸŒ
Happyformatter
happyformatter.com โ€บ home โ€บ instant python formatter โ€“ private, pep-8 perfect, browser-based
Python Code Formatter & Minifier Online | Free HAPPYFMT Tool
Free online Python formatter and beautifier. Format, validate, and beautify your Python code with PEP 8 compliance. Privacy-focused, client-side processing.
๐ŸŒ
Pythonium
pythonium.net โ€บ domicile โ€บ python formatter
Python beautifier
February 12, 2024 - This python formatter online allows to format python code online. How to format your code? Nothing could be simpler to beautify your python code, just put it in the editor and click on the โ€œformatโ€ button. Why uses this python code beautifier ? If you're experiencing indentation issues in your Python code, you can use this python indentation fixer to fix the indentation according to the language's style conventions. This tool ...
๐ŸŒ
Reddit
reddit.com โ€บ r/learnpython โ€บ easy, free to use online formatter for python code with configuration options?
r/learnpython on Reddit: Easy, free to use online formatter for Python code with configuration options?
July 13, 2024 -

I am searching for a formatter for Python3 which takes a few simple styling parameters and yet is very easy to use. All I found so far where tons of formatters, which ansolutely enforce one and only one formatting style.

Example input:

def deleteSubnet(ipAddress, cidrMask, interface = defaultNetworkInterface):
    if subprocess.run(["ip","a","d",ipAddress+"/"+cidrMask,"dev",interface], stdout=subprocess.DEVNULL, stderr=subprocess.DEVNULL).returncode != 0:
        quit(color.red+" ERROR:"+color.stop+" IP could not be cleared. You need to manually remove "+color.blue+ipAddress+"/"+cidrMask+color.stop+" from "+color.blue+interface+color.stop+"!!! Terminating...")
    print(color.green+" Success: deleted IP "+color.stopcolor.blue+ipAddress+"/"+cidrMask+color.stop+" from interface "+color.blue+interface+color.stop+".")

Example output (NOT WANTED):

def deleteSubnet(ipAddress, cidrMask, interface=defaultNetworkInterface):
    if (
        subprocess.run(
            ["ip", "a", "d", ipAddress + "/" + cidrMask, "dev", interface]
            stdout=subprocess.DEVNULL,
            stderr=subprocess.DEVNULL,
        ).returncode
        != 0
    ):
        quit(
            color.red
            + " ERROR:"
            + color.stop
            + " IP could not be cleared. You need to manually remove "
            + color.blue
            + ipAddress
            + "/"
            + cidrMask
            + color.stop
            + " from "
            + color.blue
            + interface
            + color.stop
            + "!!! Terminating..."
        )
    print(
        color.green
        + " Success: deleted IP "
        + color.stopcolor.blue
        + ipAddress
        + "/"
        + cidrMask
        + color.stop
        + " from interface "
        + color.blue
        + interface
        + color.stop
        + "."
    )

Yes it is ugly. Does not matter. If reddit does word-wrap the lines, it will be horrible. But if the line just overflows, it just looks great for me.

All I want to do is a simple tool that understands the indentations and allows me to configure a target indentation. I do not care for the standard that tools like pylint try to enforce - i dislike it.

However what is way worse than not breaking lines, is uneven indentations. And that I need to fix - but please not manually. Is there an easy to use tool, that can fix my *variable* indentations to exactly 2 spaces per indent without changing the rest of the content of the lines? (yes I want 2 spaces, period)

For javascript there are amazing tools, like beautifier.io which handles it perfectly. Why can't I find something like that for python? And yes, I prefer a simple online tool actually, that does not require a login or download.

As to why it is uneven: It is a copy&paste collection from different sources.

Thanks for your help.

๐ŸŒ
Codexize-Website
codexize.com โ€บ home โ€บ tools โ€บ python formatter
Free Python Formatter Beautifier Viewer Validator Online
Optimize your Python code effortlessly with our online Python Formatter tool. Beautify, validate, and ensure consistency in your scripts for improved...
๐ŸŒ
CleanCSS
cleancss.com โ€บ python-beautify
Python Viewer, Formatter, Editor
Enter your messy, minified, or obfuscated Python into the field above to have it cleaned up and made pretty. The editor above also contains helpful line numbers and syntax highlighting. There are many option to tailor the beautifier to your personal formatting tastes.
๐ŸŒ
W3 SpeedUp
w3speedup.com โ€บ home โ€บ python beautifier
Python Beautifier and Formatter Free Online Tool Optimize Easily
May 1, 2025 - Free online Python Beautifier and Formatter to clean, optimize, and format Python code quickly for better structure and readability.
๐ŸŒ
CodeUtility
beautifycode.codeutility.io
Online Code Beautifier - Supports JS, HTML ... - CodeUtility
Advanced online code beautifier for JS, HTML, CSS, Python, PHP, C, C++, C#, SQL & more - fast, accurate, and browser-based.
๐ŸŒ
GitHub
github.com โ€บ psf โ€บ black
GitHub - psf/black: The uncompromising Python code formatter ยท GitHub
Formatting becomes transparent after a while and you can focus on the content instead. Black makes code review faster by producing the smallest diffs possible. Watch the PyCon 2019 talk to learn more. Read the documentation on ReadTheDocs! Black can be installed by running pip install black. It requires Python 3.10+ to run.
Starred by 41.4K users
Forked by 2.7K users
Languages ย  Python
๐ŸŒ
Formatter.org
formatter.org
Online Code Formatter and Beautifier
These tools can automatically reformat the code to follow consistent styling guidelines, such as indentation, spacing, and alignment, making it easier for developers to read and understand. By using code formatter and code beautifier tools, developers can save time and ensure that their code is consistent and readable. Code Formatters ยท C/C++ Formatter ยท Java Formatter ยท Python Formatter ยท
๐ŸŒ
CloudDefense.ai
clouddefense.ai โ€บ tools โ€บ code-formatter โ€บ python
Best Python Code Formatter Tool Online
Protect your Applications & Cloud Infastructure from attackers by leveraging CloudDefense.AI ACS patented technology ยท 579 University Ave, Palo Alto, CA 94301