01
Paste Raw Scripts
Input your raw, minified, or unformatted JavaScript code block into the top text area.
JavaScript Beautifier Online
Beautify, format, and decompress minified or messy JavaScript code snippets instantly. Custom spacing options with 100% local client-side execution.
Developer Tool
JavaScript Beautifier Online
Spacing:
Beautified Output
How to use
Use this tool in three simple steps
Our workflow is designed to be straightforward, allowing you to complete your task in seconds.
02
Configure Indentation
Select 2 Spaces or 4 Spaces indent formatting according to your styling preferences.
03
Copy Formatted Code
Review the formatted JavaScript code in the lower output box and copy it to your clipboard.
Fast results
Numbers update in real time, so iteration stays quick.
Focused UI
Clean hierarchy keeps actions and outputs easy to scan.
SEO ready
Structured sections improve readability and crawlability.
Scalable shell
New tools can reuse this layout without UI drift.
Use cases
Useful for different workflows
Code Reviews
Format minified code packages to inspect functionality.
Script Debugging
Beautify compressed console scripts to identify syntax errors.
Learning & Auditing
Analyze compiled JS scripts in a human-readable indentation.
Tool guide
Why Beautify JavaScript?
In production systems, JavaScript is typically minified to strip comments, whitespaces, and compress parameters to load websites faster. However, this makes the code impossible for human engineers to read or debug. A JavaScript beautifier restores the styling layouts, indentations, and structure to make the code readable.
How Our Formatting Engine Works
The engine works by identifying syntax boundaries (such as curly braces, semicolons, and operators). It maps tokens into a linear array, strips legacy unneeded margins, and builds new indentation margins based on open and closed brackets.
How to Beautify JS Online
Paste your code block, configure your indent spacing preference (2 or 4 spaces), and copy the formatted script. Everything is processed locally in the client thread to protect your code privacy.
FAQ
Frequently asked questions
Will beautifying JavaScript break my code?
No. The formatting engine only alters structural metadata like whitespace spacing, indent tabs, block newlines, and semicolon layouts. It never alters function declarations, variable names, or execution paths.
Can I copy private scripts into this tool?
Yes. The code you input remains entirely inside your browser tab's RAM space. No data is stored, cookies are not logged, and code strings are not transmitted, guaranteeing absolute code privacy.
Can it format TypeScript or JSON?
For JSON files, we recommend using our specialized JSON Formatter tool. For simple TypeScript scripts, this beautifier will format basic statements, bracket layers, and declarations correctly.
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