Does this tool execute code?

No. HTML, CSS, and JavaScript remain escaped editor text and no live preview or evaluation path exists.

How is JavaScript minified safely?

Terser parses the program while compression and identifier mangling remain disabled, avoiding homegrown regex transforms.

HTML CSS JS Beautifier & Minifier

What is code beautification?

Beautification parses code and rewrites whitespace into a consistent, readable layout. Minification reduces transport size while aiming to preserve behavior.

HTML, CSS, and JavaScript formatting

HTML and CSS use their language parsers through Prettier. JavaScript uses Babel-compatible parsing for beautification. The source and result remain plain escaped editor text, with no live DOM or script preview.

Why JavaScript minification requires parsing

Strings, regular expression literals, templates, and comments make regex-based JavaScript minification unsafe. This tool uses Terser with compression and name mangling disabled, providing conservative whitespace and comment removal.

Does minification improve performance?

Smaller text may reduce transfer and parse costs, but compression such as Brotli or gzip and caching remain important. The before-and-after panel reports exact UTF-8 byte sizes for the current transformation.

Frequently asked questions

Does this execute my HTML or JavaScript?

No. There is no preview frame, DOM injection, or evaluation path.

Does minification rename variables?

No. JavaScript identifier mangling and compression are deliberately disabled.