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Client-Side Engine Loading
Client-Side Engine Loading
Explore other helpful utilities in the Developer Tools suite.
Minify JavaScript code instantly in your browser. Remove whitespace and comments to reduce bundle size and improve site speed. Free, offline.
Paste your raw JavaScript into the left editor pane, or drag and drop a .js / .mjs file into the sidebar upload zone.
Review the right panel to see the instantly minified code and verify your total KB savings in the telemetry box.
Click the "Download JS" button to save the production-ready script locally.
Advanced AST Parsing
Safely collapses operators, strips comments, and removes line breaks while strictly protecting the integrity of your template literals and strings.
Reduce Payload Size
Drastically cut down your JavaScript bundle sizes. Smaller bundles execute faster on mobile devices and improve your Time to Interactive (TTI).
Real-Time Telemetry
Watch your code compress instantly. The sidebar provides a live readout of exactly how many Kilobytes were saved and the total percentage reduction.
Client-Side Security
JavaScript files often contain proprietary logic or sensitive API endpoints. This tool processes your code entirely offline in your local browser cache.