So this started because I was fed up. Someone would send me a file and it'd be this whole thing. A .heic from an iPhone I couldn't open on my laptop. A 3D model a friend wanted feedback on. Once it was a DICOM scan from a doctor and I genuinely had no idea what to do with it. Every time, the options were the same: install some sketchy desktop app, or drag my file into a random "free online viewer" and just... hope they weren't keeping a copy. That second one always bugged me. You're uploading your tax doc, your medical scan, your whatever, to a server you know nothing about. So I built the thing I wanted. You drop a file in, it figures out what it is, and it opens it. That's it. And nothing leaves your machine — it all runs in your browser, so there's genuinely no upload happening. If you're the type to check the network tab, please do, that's kind of the whole point. It got a little out of hand on the format count (216 now, somehow) — PDFs and images and spreadsheets, but also the weird stuff: CAD files, LIDAR point clouds, Outlook emails, packet captures, astronomy data. If you've ever double-clicked a file and gotten "no app can open this," there's a decent chance this handles it. It also converts and compresses and does basic edits, all the same way, on-device. No account, no paywall, no ads. I'm not totally sure what it becomes yet, honestly — right now I just wanted it to exist. Would love to know what breaks, and what formats you wish it opened. Throw the weirdest file you've got at it.

uDocumentViewer

Open any file in your browser — 216 formats, zero uploads

Open any file in your browser — 216 formats, zero uploads