JavaScript Formatter & Minifier
Format, validate, and minify JavaScript in your browser. Clean up messy code or generate compact output in seconds.
About this tool
Use the formatter to make code readable and consistent, and the minifier to reduce file size for faster loading. The validator provides quick feedback on syntax errors.
Frequently asked questions
Does this tool run in the browser?
Will minification change my code behavior?
Can I keep license comments when minifying?
What JavaScript syntax is supported?
Added Feb 23, 2026
🔄 Workflow Suggestion
Try combining multiple tools for a complete workflow. For example: Notepad → Text Encryption → Save to Cloud or Date Calculator → Calendar → Countdown Timer
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