JavaScript Formatter and Minifier
Format JavaScript for readable inspection or create a compact version for testing and transport. Processing takes place locally in your browser.
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What JavaScript Formatter and Minifier does
Format JavaScript for readable inspection or create a compact version for testing and transport.
Worked example
Input
function add(a,b){return a+b}
Result
An indented function with consistent spacing
How it works
The formatter tokenizes JavaScript syntax and writes it using consistent indentation. Minification removes optional whitespace and comments without intentionally changing program behavior.
Developer workflows
- Read generated or minified JavaScript
- Normalize code before a diff
- Create a compact non-production test copy
Security and compatibility checks
- Formatting does not test correctness, security or browser compatibility.
- A simple minifier may not perform production-grade compression or source maps.
- Do not run unfamiliar code merely because it has been formatted.
Frequently asked questions
Is formatted JavaScript safe to execute?
No. Formatting changes presentation, not behavior or trustworthiness.
Is this a replacement for a build minifier?
Use a maintained build tool for production bundling, tree shaking, mangling and source maps.
Processing takes place locally in your browser.