{"$schema":"https://toolsly.tools/schemas/tool-manifest-v1.json","generated":"2026-05-20T20:47:38.320Z","discovery":{"catalog":"https://toolsly.tools/tools.json","llmsTxt":"https://toolsly.tools/llms.txt","sitemap":"https://toolsly.tools/sitemap.xml"},"relatedTools":[{"slug":"url-parser","name":"URL Parser","url":"https://toolsly.tools/url-parser"},{"slug":"user-agent-parser","name":"User-Agent Parser","url":"https://toolsly.tools/user-agent-parser"},{"slug":"http-status-code","name":"HTTP Status Code Lookup","url":"https://toolsly.tools/http-status-code"},{"slug":"mime-type-lookup","name":"MIME Type Lookup","url":"https://toolsly.tools/mime-type-lookup"},{"slug":"subnet-calculator","name":"IPv4 Subnet Calculator","url":"https://toolsly.tools/subnet-calculator"},{"slug":"css-minifier","name":"CSS Minifier","url":"https://toolsly.tools/css-minifier"},{"slug":"css-beautifier","name":"CSS Beautifier","url":"https://toolsly.tools/css-beautifier"},{"slug":"html-minifier","name":"HTML Minifier","url":"https://toolsly.tools/html-minifier"}],"kind":"utility","slug":"js-minifier","name":"JavaScript Minifier","description":"Minify JavaScript with Terser — compress, mangle and ship the smallest possible bundle.","longDescription":"Paste any JavaScript or ES module and get a compressed, single-line version powered by Terser. Compression eliminates dead code and shortens expressions; mangling renames local identifiers to single letters for maximum size reduction. You can turn mangling off if you need stack traces with readable names. Runs entirely in your browser — your source never leaves this page.","category":"dev","categoryName":"Dev","keywords":["javascript minifier","js minifier","javascript minifier online","minify javascript","minify js online","compress javascript","js compressor","javascript optimizer","terser online","shrink javascript","online js minifier","js minify free"],"badge":"Minifier","url":"https://toolsly.tools/js-minifier","inputs":[{"type":"text","key":"js","label":"JavaScript","placeholder":"function hello(name) {\n  console.log('hi ' + name);\n}","multiline":true,"monospace":true},{"type":"boolean","key":"mangle","label":"Mangle identifiers","defaultValue":true,"help":"Rename local variables to single letters for smaller output."}],"outputs":[{"key":"minified","label":"Minified JS","multiline":true},{"key":"originalSize","label":"Original size (chars)"},{"key":"minifiedSize","label":"Minified size (chars)"},{"key":"savings","label":"Saved"}],"invocation":{"webUi":"https://toolsly.tools/js-minifier","api":null,"notes":"Currently invoked via the web UI at `webUi`. Inputs are form fields; outputs are structured text values. A remote MCP/REST API is planned."}}