nopa is a free collection of browser apps: PDF merge, sign, compress and convert; background removal; HEIC/AVIF converters; audio transcription; QR codes; notes, tasks, a whiteboard, an EPUB reader and a media player. There's no backend for your files — processing happens on your device (background removal and Whisper transcription run in-browser via WASM), so documents stay private, with no limits or watermarks. The apps share one desktop with a common file layer: merge a PDF, compress it, drop it into your notes without leaving the tab. Free, no accounts, installable as a PWA, works offline after the first visit. For anyone tired of "free" converter sites with fake download buttons and signup walls. Built solo, localized in 7 languages.

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