JavaScript Minifier

FAQ

How is this different from the formatter?+

The formatter pretty-prints for reading. This page compresses code for smaller payloads. Invalid JavaScript fails minify instead of guessing.

Is Terser loaded on every visit?+

No. Terser is loaded only when you minify. Formatter-only pages do not download it.

Are source maps supported?+

No. Source maps are ignored. Output is minified text you can copy or download as a .js file.

Is my code uploaded?+

No. Minify runs locally. Treat pasted secrets as untrusted in any browser tab, but DevTilt does not send the input to a server.

Why did minify fail with a syntax error?+

Terser requires valid JavaScript. TypeScript-only syntax, missing brackets, or JSON pasted into the minifier will fail. Use the formatter or your editor to locate the parse error line when Terser reports a position.