#231 · Formatters & Data Text Tool

Code Formatter

Format messy code into a cleaner structure with indentation cleanup, brace-aware line breaks, mixed tab and space detection, line length analysis, and a formatting quality score.

Text Input

Code formatting options
spaces

Recent History

No history yet.
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How to use this text tool

  • Paste code into the input area.
  • Select auto detect or a language hint.
  • Choose the indentation size.
  • Run the formatter and review the quality score.

What this tool does

This code formatter improves readability for common snippets by normalizing indentation, breaking simple brace structures, trimming trailing whitespace, and reporting structure issues.

Detect language style, normalize line endings, add safe line breaks around braces and semicolons, rebuild indentation, then calculate formatting statistics.

This is a lightweight browser formatter. Review output before committing production code.

Example

Sample input is included in the text box. Run the tool to see the processed output and the before/after statistics.

Use cases

  • Clean pasted code before review.
  • Normalize formatting before committing files.
  • Prepare text for editors, terminals, documentation, or data exchange.
  • Compare before and after structure using the result metrics.

Tips for better output

  • Use the same indentation style across a repository.
  • Keep very long lines under your team limit.
  • Run language-specific linters for critical code.

Processing details

The tool runs in the browser and focuses on safe whitespace, indentation, wrapping, line ending, or column formatting depending on the selected tool.

For critical code or regulated data, validate the final output with your project-specific parser, compiler, linter, or test suite.

FAQ

How do I automatically format source code online?

Paste your code, select a language mode or auto detect, then run the formatter to normalize indentation, braces, spacing, and line breaks.

Can this code formatter detect programming languages?

It uses lightweight browser-side detection for common patterns such as HTML tags, CSS braces, SQL keywords, JSON-like blocks, and JavaScript-like syntax.

Why are mixed tabs and spaces a problem in code?

Mixed indentation can display differently across editors and may cause syntax or readability problems in indentation-sensitive languages.

Does code formatting change program behavior?

Formatting should only change whitespace and simple layout, but you should still review output before using it in production.

What line length should I use for formatted code?

Many teams use 80, 100, or 120 characters depending on language and project style.

Processing modules

ModulePurpose
Input parserReads pasted text, uploaded files, or sample data.
Formatter coreApplies the selected conversion or formatting logic.
Quality analyzerCalculates line, whitespace, and consistency metrics.
ExporterProvides TXT, CSV, JSON, copy, and print actions.

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