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Prettier for beautifying, Terser and CSSO for minifying — the real engines, running in a worker on your own device. Six jobs in one tool, and your source code never leaves the tab.
The engine downloads once, then stays ready for the rest of your visit.
Paste code, or open a file.
Paste into the editor or open a file — everything you add stays in this tab, and you see exactly what the tool will work on before anything runs.
Your browser does all the work locally. Nothing is uploaded — what you paste never leaves this tab, so there’s nothing for anyone to store, scan, or leak.
Take the result to your clipboard or save it as a file. Close the tab and nothing of what you pasted remains.