Side by side
Black vs Prettier
Both stand on code formatters. Which one you can start free with, which one lets you read the code, and what each costs once you pay.
Free plan LinuxMacSelf-hosted+1
Black is a focused Python formatter with editor and automation integrations, plus a check that reformatted code remains effectively equivalent. Its command-line orientation and fixed indentation style may not suit every workflow.
Visit Black
Free plan Open source APIExtensionLinux+4
Prettier offers a consistent formatting workflow through its CLI, editor integrations, and API. Its limited configuration and plugin requirement for additional languages are worth considering.
Visit PrettierThe facts
| Black | Prettier | |
|---|---|---|
| Free plan | Yes | Yes |
| Open source | Not published | Yes |
| Runs on | Linux, Mac, Self-hosted, Windows | API, Extension, Linux, Mac, Self-hosted, Web, Windows |
| Lowest paid plan | Free or on request | Free or on request |
| Plans published | 1 | 2 |
| Maker | Not published | Not published |
| Website | black.readthedocs.io | prettier.io |
| On code formatters | #2 of 22 | #1 of 22 |
Black: what it does well
- Free and MIT-licensed.
- Formats entire Python files in place.
- Checks abstract syntax tree equivalence.
- Integrates with editors and GitHub Actions.
- Supports notebook formatting with the jupyter extra.
What to know first
- Requires Python 3.10 or newer.
- Does not provide a Python interface.
- Indentation style cannot be configured.
- Some notebook cells are skipped.
Prettier: what it does well
- Free and open source
- CLI can format files or check them in CI
- Integrations are listed for several editors and IDEs
- Can format automatically when saving a file
What to know first
- Configuration options are intentionally limited
- Languages beyond the built-in set require a plugin
- Exact local versions are recommended for project consistency
Alternatives to Black Alternatives to Prettier The whole list