JavaScript Prettify Guide

What this guide covers

Use this JavaScript Prettify tool to format compact or messy JavaScript into a more readable structure. It is useful for debugging copied snippets, inspecting generated code, reviewing minified-looking samples, cleaning simple scripts, and making JavaScript easier to scan before editing or sharing.

This guide explains when to use JavaScript Prettify, how to get a cleaner result, and which mistakes to avoid before moving on to related tools or the main tool page.

Why use JavaScript Prettify

• Make messy JavaScript easier to read
• Inspect copied snippets before editing them
• Add indentation and line breaks to compact code
• Review generated script output more comfortably
• Format simple JavaScript directly in the browser

How to use JavaScript Prettify

1. Paste JavaScript into the input box
2. Click Run Tool to format it
3. Review the formatted output with indentation
4. Scan the structure more easily before editing or copying
5. Copy the result for debugging, documentation, or cleanup

Best use cases

• Cleaning copied JavaScript snippets
• Reviewing generated front-end code
• Inspecting compact script samples
• Making short JS blocks easier to document
• Debugging one-line code fragments

Common mistakes