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uDocumentViewer
Open any file in your browser — 216 formats, zero uploads
uDocumentViewer opens 216+ file formats right in your browser — PDFs, images, ebooks, spreadsheets, 3D models, CAD/PCB, scientific data (DICOM, NIfTI, FITS), geospatial, email, fonts, and more. What makes it different: every file is decoded on your own device with JavaScript and WebAssembly. Nothing is ever uploaded It's not just a viewer: 107 client-side converters, 7 compressors, and 21 editing tools (merge PDF, trim video, crop images, and more). No accounts, no quotas, no ads, no paywall.
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.
About uDocumentViewer on Product Hunt
“Open any file in your browser — 216 formats, zero uploads”
uDocumentViewer was submitted on Product Hunt and earned 0 upvotes and 1 comments, placing #92 on the daily leaderboard. uDocumentViewer opens 216+ file formats right in your browser — PDFs, images, ebooks, spreadsheets, 3D models, CAD/PCB, scientific data (DICOM, NIfTI, FITS), geospatial, email, fonts, and more. What makes it different: every file is decoded on your own device with JavaScript and WebAssembly. Nothing is ever uploaded It's not just a viewer: 107 client-side converters, 7 compressors, and 21 editing tools (merge PDF, trim video, crop images, and more). No accounts, no quotas, no ads, no paywall.
On the analytics side, uDocumentViewer competes within Productivity, Privacy and Developer Tools — topics that collectively have 1.2M followers on Product Hunt. The dashboard above tracks how uDocumentViewer performed against the three products that launched closest to it on the same day.
Who hunted uDocumentViewer?
uDocumentViewer was hunted by Gagandeep Singh. A “hunter” on Product Hunt is the community member who submits a product to the platform — uploading the images, the link, and tagging the makers behind it. Hunters typically write the first comment explaining why a product is worth attention, and their followers are notified the moment they post. Around 79% of featured launches on Product Hunt are self-hunted by their makers, but a well-known hunter still acts as a signal of quality to the rest of the community. See the full all-time top hunters leaderboard to discover who is shaping the Product Hunt ecosystem.
For a complete overview of uDocumentViewer including community comment highlights and product details, visit the product overview.
Gagandeep Singh