Paste minified or messy HTML, CSS, JavaScript or JSON and get it back tidily indented. The language is detected, or pick it.
Formatting a minified file makes it readable again, but it can’t bring back what minifying removed: comments are gone and short names like a and b stay short. It’s still the quickest way to see what a script or stylesheet does.
js-beautify (MIT), the formatter many editors have used for years, running in your browser.
No.
Open all 35 Dev Tools. Everything runs in your browser; nothing you paste is uploaded.