JAVASCRIPT Formatter & Minifier
"Zero-latency processing via WebAssembly.
Data never leaves your local environment."
Free JavaScript Formatter
JavaScriptFree JavaScript formatter and beautifier tool. Format and beautify your JavaScript code online at no cost. No registration required, instant formatting.
LeapOCR
Convert Documents to Markdown & Structured Data with AI-powered OCR
Combine world-class OCR with AI instructions for trusted extractions
JavaScript Minifier – Shrink JS & JSX in Your Browser, Zero Uploads
Ship smaller bundles and protect your intellectual property. Our online JavaScript minifier compresses JS, JSX and ES modules entirely in your browser using a high-performance WebAssembly build of Terser—no servers, no uploads, no risk. Paste your code, tweak mangling options, and download production-ready JavaScript that loads faster and scores higher on Lighthouse. From side projects to Fortune-500 codebases, get private, instant minification that fits any CI/CD pipeline or quick debugging session.
Javascript Integrity Checker
Comprehensive validation engine for javascript data structures with real-time error detection.
- → Parse Error Detection: Pinpoints exact location of syntax violations.
- → Character Encoding Analysis: Validates proper character encoding compliance.
- → Structure Verification: Ensures proper nesting patterns and syntax compliance.
Capabilities
- 01 Pure WebAssembly minification engine—no API calls, no latency, no data leaks..
- 02 Supports JS (.js), JSX (.jsx), ES modules (.mjs), TypeScript (.ts) and modern syntax up to ES2023..
- 03 Variable & property mangling, dead-code elimination, constant folding, license-comment preservation..
- 04 Benefit: Zero-latency, client-side minification keeps source code completely private—nothing ever leaves your browser..
- 05 Benefit: Smallest bundle sizes in milliseconds thanks to WebAssembly-powered engines that run 10-20× faster than server-side alternatives..