Where your data goes
Nowhere it shouldn't. The claim is architectural, not a policy promise: there is no server-side code that could receive your content.
What moves in each direction
| Direction | What | Why | | --- | --- | --- | | Comes down | The app, templates, fonts | It is a website; it has to load | | Goes up | Anonymous page counts, no cookies | To know which pages are used | | Never sent | Your files, prompts, slides, brand kits | They exist only in your browser |
Don't trust it — check it
- Turn off your Wi-Fi. Load the converter, then go offline and convert a
deck. It still works. The
on your devicemark in the header lights up. - Open your browser's network inspector and convert a deck. Watch nothing of yours leave.
- Read the source. There are no document-processing API routes and no server actions. Templates make no external requests.
There is no account to create, so there is no profile to leak. There is no AI inside unPaper, so your content is never sent to a model by us — you choose the assistant, and you paste into it yourself.
The full statement is on privacy, and the institutional version — the one to hand to a security reviewer — is on for institutions.