Code Formatter

A fast, language-agnostic code formatter designed for developers, educators, and mentors to quickly produce clean, consistent code formatting across projects.

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2,864+

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

A code formatter tool applies language-specific formatting rules to source code. It accepts the raw code, the target language, and a set of style options, then outputs standardized formatting. Conceptually, the formatter parses syntax-aware structures and re-emits code with consistent indentation, spacing, and punctuation. This enables teams to enforce a single style without manual edits. The tool benefits developers, educators, and code reviewers by reducing bike-shedding and improving readability across repositories and onboarding sessions. Unique value comes from multi-language support, configurable presets, and CI-friendly output that can be consumed by editors or pipelines. Core features include language detection, presets (default, strict, compact), indentation controls, max line length, quote style, and trailing comma rules. Use cases range from daily coding sessions to code reviews and teaching examples. The tool avoids brand-specific dependencies, focusing on universal formatting concepts that align with common language standards and best practices.

Save your calculation history with a free account

How to Use

Provide inputs: source_code, language, and formatting options.
Choose preset or customize rules (indent_size, quote_style, max_line_length, trailing_commas).
Run formatter to produce formatted_code.
Review the formatted_code and optional diff or summary of changes.
Integrate into your workflow via API/CLI or repository hooks.

Frequently Asked Questions

Find Quick Answers

Which languages are supported?

The formatter supports a broad set of languages including JavaScript, Python, Java, C++, JSON, YAML, and others. Each language applies its canonical style rules while allowing user customization.

Can I customize the formatting rules?

Yes. Presets cover default, strict, and compact styles, and you can override indent size, max line length, quote style, and trailing comma handling to match project conventions.

Is it usable in CI/CD?

Yes. The tool exposes an API and CLI interface that can be integrated into CI pipelines or editor integrations to auto-format code on commit or pull request events.

Are there any usage limits or costs?

The tool is designed for developer workflows and can be used locally or in pipelines; depending on deployment, there may be hosting costs, but the formatter itself is not inherently restricted by usage limits.

Need to run multiple calculations?

Create a free account today to unlock unlimited daily runs, access advanced parameters, save your history, and request custom features.

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