JavaScript Formatter & Beautifier
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Part of Code & data tools
About JavaScript Formatter
The JavaScript Formatter pretty-prints functions, objects, and modules with stable indentation, or minifies scripts for production. It supports quick cleanup of bundles copied from stack traces, bookmarklets, or legacy pages.
How to Use JavaScript Formatter
Paste JavaScript source into the input panel. Click Format JavaScript to expand blocks and align braces. Use Minify JavaScript to produce a compact build artifact. Copy the formatted code back into your repo or sandbox.
When to Use JavaScript Formatter
Application development: Review minified third-party snippets before integration. Debugging: Beautify code logged from error reports or browser extensions. Interviews & teaching: Present readable examples during live coding sessions. Build prep: Generate a minified version when you do not have a bundler handy.
Why Use This JavaScript Formatter?
Consistent formatting makes logic flow obvious and reduces merge conflicts during reviews. Running locally in the browser keeps proprietary code off remote format servers unless you choose to share it.
How to use
1. Paste JavaScript source into the input panel.
2. Click Format JavaScript to expand blocks and align braces.
3. Use Minify JavaScript to produce a compact build artifact.
4. Copy the formatted code back into your repo or sandbox.
Frequently asked questions
Does JavaScript Formatter upload my source code?
No. Formatting runs locally in your browser after the page loads—nothing is sent to Case Modify servers.
Can JavaScript Formatter minify as well as beautify?
Yes when the tool supports both modes. Use Format for readable indentation and Minify for compact output before deployment.
Does JavaScript Formatter change how my code runs?
No. Formatting only adjusts whitespace and line breaks (or minifies size). It does not rewrite logic, although you should always review output before deploying.