Paste your input
Drop CSS, HTML, JSON, or other text into the editor. Nothing is uploaded.
JavaScript Beautifier
Lightly indent JavaScript.
How to use
Four quick steps — paste, run, review, copy. Everything stays in your browser.
Run the tool
Click Convert or Run. The result appears instantly on this page.
Check the output
Read the generated code and any review notes before you ship it.
Copy and use
Copy the output to your clipboard and paste it into your project.
About this tool
Light indentation for small JavaScript snippets. Not a full Prettier — use your project formatter for real codebases.
Example
Tiny function shows indentation without claiming full AST formatting.
Input
function add(a,b){return a+b;}const x=add(1,2);Output
function add(a,b){
return a+b;
}Tip
For TypeScript/JSX, prefer the project’s Prettier/ESLint pipeline.