I built 17 file tools with no backend. The constraint hurt more than I expected.

Every file converter I've used sends your document to a server, processes it, and promises to delete it afterwards. I wanted to see how far you can get without asking anyone to believe that promise — so Novexa Studio runs entirely in the browser. No upload, no queue, no "deleted after 1 hour."

The honest part: the constraint is expensive.

• Large PDFs are routine on a server. In a browser tab they're a memory wall.

• No backend means no server-side OCR, no heavy models, no background jobs.

• I can't back a progress bar with a real job queue — everything competes with the user's own RAM.

What I got in return is that the privacy claim is falsifiable. You can open DevTools, watch the Network tab stay empty while a file is processed, and stop trusting me entirely. That felt like the only version of "we respect your privacy" that actually means something.

But here's what I keep going back and forth on: does anyone outside this forum ever check? Or is "private" just a word on a landing page that converts the same either way?

Has privacy-first architecture ever shown up in your numbers — or is it something we build to be able to sleep at night?