Input JavaScript
Output
Lightning Fast JS Minifier
Boost Core Web Vitals
Instantly compress JavaScript code, slash file size by up to 70%, and accelerate your website performance. Free, secure, no signup.
⚡ Paste any JS snippet — minified code ready in milliseconds
Eliminate bloated scripts & win SEO
Every extra kilobyte of JavaScript slows down your site, hurting Core Web Vitals and Google rankings. Our JS Minifier removes whitespace, renames variables, and strips comments without breaking functionality.
Manual minification is error-prone and time-consuming. Automate optimization in one click — get production-ready code that loads 2-3x faster.
CLI & REST API options
Google PageSpeed gains
Everything you need to minify smarter
Precision, speed, and full control for modern web optimization
Minify in 4 steps
From raw code to production‑ready JS in seconds
Paste JS
Input raw code or file URL
Configure
Set options: mangling, comments, source maps
Minify
One click — advanced compression engine
Export
Download .min.js or copy directly
Unlock blazing performance & higher rankings
Smaller JS = faster Time to Interactive, better UX, and improved Google Core Web Vitals.
Reduced JS payload directly decreases First Contentful Paint and LCP.
Google prioritizes fast websites — minified JS improves PageSpeed score.
Smaller assets reduce hosting bills and CDN egress fees.
Trusted by developers & SEO pros
Real‑world impact across roles
Frontend Developers
- ✓ Minify production builds instantly
- ✓ Integrate via Webpack/Vite plugin
- ✓ Automate with CI/CD pipelines
- ✓ Reduce bundle size under budget
- ✓ Debug via source maps
SEO Agencies
- ✓ Improve Core Web Vitals scores
- ✓ Audit JS bloat for clients
- ✓ Faster indexing by crawlers
- ✓ Mobile UX gains → higher rankings
- ✓ White-label reports
Bloggers & Marketers
- ✓ Speed up WordPress/Webflow sites
- ✓ No coding skills required
- ✓ Minify theme scripts instantly
- ✓ Reduce bounce rate by 25%
- ✓ Improve ad revenue with faster load
eCommerce Owners
- ✓ Optimize Shopify/ Magento JS
- ✓ Boost conversion rates
- ✓ Lower cart abandonment
- ✓ Meet Google’s speed requirements
- ✓ Scale during traffic spikes
Superior JS Minifier engineered for precision
Unmatched speed, zero bloat, and fully transparent
Privacy-first
All minification happens locally in your browser — no server uploads. Protect proprietary source code.
Lightning speed
Minify 1MB JS under 0.2 seconds with WebAssembly powered engine.
Free forever plan
Unlimited minifications, API calls, and team collaboration at zero cost.
Why SEOScaleUp outperforms
Got questions?
Absolutely not. All minification is performed inside your browser via WebAssembly. No data leaves your device — perfect for proprietary scripts.
ES2022, ES6 modules, async/await, optional chaining, and all modern features. We use acorn parser + terser core for full compatibility.
Yes, we provide a free REST API and npm package (seoscaleup-minify) for CLI integration, CI/CD pipelines, and build tools.
Up to 5MB per file for browser tool, and unlimited via API (chunked upload). Handles large libraries like Three.js, React, etc.
Yes, smaller JS = faster load times, directly improving Core Web Vitals (LCP, FID, CLS) which are ranking factors for Google.
Yes, enable source map generation to get a .map file. Debug production code like a pro.
SEOScaleUp JS Minifier is 100% free for all core features. For enterprise SLA, advanced analytics, we offer a Pro plan starting at $19/mo.
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