Yes. No subscription, no page limit, no watermark. The app is open source under Apache-2.0 and the PDF tools do not require an account.

PDF toolkit

Every PDF job, done on your phone

No. Merging, splitting and compression all run on your device. Your documents are not sent anywhere — doing it locally is the whole point.

The practical limit is your phone memory rather than an artificial cap. Very large files take longer but are not blocked.

Yes. You can combine PDFs and images in one document, or convert PDF pages into images and back.

Why OneBox for PDFs

AI agent

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