Code Formatter

Formats code to a consistent style across languages, helping developers and teams maintain readable, uniform code.

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1,820+
Total Calculations Run
< 15ms
Browser Execution Speed
100%
Client-Side Privacy
4.9 / 5.0
User Satisfaction

Worked Example & Common Values

Below is a sample worked calculation demonstrating how Code Formatter processes input data instantly inside your browser.

Sample Input Minified string: {"id":1,"status":"active","roles":["admin"]}
Computed Result { "id": 1, "status": "active", "roles": [ "admin" ] }
Execution Mode Client-Side In-Browser JS
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About This Tool

The Code Formatter provides language-aware formatting to produce clean, readable code that adheres to team or project style guides. It accepts raw source code, the target language, and optional style rules, then outputs a consistently formatted version and a change diff. This enables teams to maintain uniform aesthetics across repositories and reduces review friction.


Conceptually, the tool analyzes code using language grammars to produce tokens or an abstract syntax form, then applies a printer that enforces spacing, indentation, and wrap decisions without altering semantics. Comments and docstrings are preserved and aligned with surrounding code. Long expressions are wrapped at configurable breakpoints while preserving readability and syntactic correctness.


Benefits include faster onboarding for new teammates, reliable diffs for pull requests, and reproducible formatting across editors and CI environments. It supports multi-language projects and accepts presets or custom rule sets so teams can encode their preferred style. Typical use cases are pre-commit formatting, CI checks, and editor integrations.


Unique value lies in language-specific formatting that remains deterministic under repeated runs, supports batch processing, and emits structured diffs for review. Core features include explicit language input, style presets, idempotent formatting, and batch options. Use cases range from small scripts to large codebases requiring consistent formatting discipline.

How to Use

  1. Provide inputs: source_code, language, and optional options.
  2. Choose style: select a preset or customize indent_size and max_line_length.
  3. Run formatter: execute to generate formatted_code and diff.
  4. Review outputs: apply formatted_code in your editor or CI; inspect the diff for changes.
How to use clean code formatter

Frequently Asked Questions

Find Quick Answers

Which languages are supported?
The formatter supports major languages including Python, JavaScript/TypeScript, Java, C++, Go, and C#. It uses language-specific grammars to apply appropriate indentation, line breaks, and punctuation spacing while preserving semantics.
Can it enforce team style guidelines?
Yes. It provides default presets and allows custom rule sets that encode project-wide conventions for indentation, line length, and comment alignment. Rules are deterministic and reusable across repositories.
Can it integrate with CI or IDEs?
Yes. Outputs (formatted_code and diff) are designed for consumption by build pipelines and editors. It can be invoked in pre-commit hooks, CI jobs, or editor plugins to ensure consistent formatting.
How are comments and docstrings handled?
Comments and docstrings are preserved and aligned with surrounding code, with whitespace normalization applied to improve readability without altering content or position relative to code.

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