Code utilities

Code Formatter

Format JavaScript, TypeScript, JSON, CSS, HTML, Markdown, and YAML in your browser with Prettier.

Formatted TypeScript
Formatted output will appear here.

Features

Prettier Powered

Uses Prettier standalone in the browser for familiar formatting results.

Multiple Parsers

Supports JavaScript, TypeScript, JSON, CSS, HTML, Markdown, and YAML.

Print Width Control

Tune print width, tab size, semicolons, quotes, and trailing commas.

Copy or Download

Copy formatted output or download it with the selected file extension.

Sample Snippets

Load realistic snippets for quick parser checks and demos.

Local Formatting

Source code stays in the browser tab and is not uploaded.

Frequently Asked Questions

No. Formatting runs in your browser with Prettier standalone.

This page supports JavaScript, TypeScript, JSON, CSS, HTML, Markdown, and YAML.

Prettier needs syntactically valid input for the selected parser. Switch parsers or fix the syntax error shown in the output panel.

A growing collection of fast, privacy-first developer utilities. All tools run in your browser — your data never leaves your device.

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