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Best Code formatters in 2026

Code formatters help standardize source-code layout. This list is for people choosing a formatter for a personal project, team workflow or development setup on a budget.

  1. 1

    Prettier

    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.

    8.8 Open source Visit site
  2. 2

    Black

    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.

    7.7 Free plan Visit site
  3. 3

    CSharpier

    Free plan APILinuxMac+1

    CSharpier provides an opinionated way to format C# and XML across common development workflows.

    7.6 Open source Visit site
  4. 4

    autopep8

    Free plan APILinuxMac+1

    autopep8 offers configurable PEP 8 formatting across major desktop platforms and can be used from commands, hooks, or Python code. Review aggressive changes carefully because some can affect meaning.

    7.4 Free plan Visit site
  5. 5

    clang-format

    Free plan ExtensionLinuxMac+1

    clang-format offers broad language coverage and several ways to apply formatting, from editors to staged Git changes.

    7.3 Free plan Visit site
  6. 6

    elm-format

    Free plan LinuxMacWindows

    elm-format offers a free way to apply consistent formatting to Elm source code, with command-line and editor workflows. Its scope is focused on Elm rather than multiple languages.

    7.3 Free plan Visit site
  7. 7

    gofmt

    Free plan LinuxMacWindows

    gofmt provides a focused way to format Go source, with options for checking differences and applying transformations.

    7.2 Free plan Visit site
  8. 8

    Ruff

    Free plan LinuxMacSelf-hosted+2

    Ruff combines Python linting, formatting and fixes, with integrations for common editors and CI workflows.

    7.1 Free plan Visit site
  9. 9

    PHP CS Fixer

    Free plan LinuxSelf-hosted

    PHP CS Fixer offers automatic formatting alongside a reporting-only mode, with configurable styles and editor and CI options.

    6.9 Free plan Visit site
  10. 10

    RuboCop

    Free plan LinuxSelf-hosted

    RuboCop provides configurable Ruby linting, formatting, editor integration, and CI reporting at no cost. Its plugin and autocorrection options support both new projects and legacy codebases.

    6.9 Open source Visit site
  11. 11

    rustfmt

    Free plan LinuxMacWindows

    rustfmt covers common Rust formatting workflows, including Cargo, editor use, and CI.

    6.9 Open source Visit site
  12. 12

    Spotless

    Free plan LinuxMacWindows

    Choose Spotless if you need an open-source formatter that can check and fix code across multiple languages and build systems.

    6.9 Open source Visit site
  13. 13

    Uncrustify

    Free plan LinuxMacSelf-hosted+1

    Uncrustify offers extensive formatting controls and command-line processing across several languages.

    6.9 Free plan Visit site
  14. 14

    OCamlFormat

    Free plan Linux

    OCamlFormat combines project-level formatting settings with integrations for Dune and other tools. Check its OCaml and Dune requirements before adding it to a project.

    6.8 Free plan Visit site
  15. 15

    swift-format

    Free plan iPhoneLinuxMac

    Choose swift-format for a free, Apache-2.0 tool that formats and lints Swift with command-line, plugin, API, and editor integration options.

    6.8 Open source Visit site
  16. 16

    Dart formatter

    Free plan LinuxMacWindows
    6.3 Free plan Visit site
  17. 17

    EditorConfig

    by EditorConfig
    Free plan
    5.8 Visit site
  18. 18

    LuaFormatter

    by Koihik
    Free plan
    5.6 Visit site
  19. 19

    StyLua

    by JohnnyMorganz
    Free plan
    5.3 Visit site
  20. 20

    Deno

    Paid
    4.5 Visit site
  21. 21

    google-java-format

    Paid
    4.1 Open source Visit site
  22. 22

    YAPF

    Paid LinuxMacWindows
    4.1 Open source Visit site

#1Places #1, #2, #3, #4, #5 on this list can be bought by the makers of the software on it. See the price

Compare free plans, free trials and open-source licences before choosing. Check the supported language, platform and integration style you need, such as Linux, macOS, Windows, self-hosted use, an API or an extension.

Questions

Can I use a code formatter for free?

Yes. The list includes tools with free plans, such as autopep8, Black, clang-format, gofmt and LuaFormatter. Check the listed pricing details for the tool you want.

Are open-source code formatters listed?

Yes. CSharpier and google-java-format are marked open source. Review a tool's licence if you need to inspect or modify its code.

Do code formatters offer free trials?

A free trial is available from tools on this list. Check the individual listing for trial terms before signing up.

Which platforms can these tools use?

Platform options represented here include Linux, macOS, Windows, self-hosted use, APIs and extensions. Confirm the platform for the specific tool.

Does google-java-format support Java?

Yes. google-java-format is listed with Java as a supported language.

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