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Universal File Opener
Open and edit almost any file. Offline, no subscription.
Opens PDF, Word, Excel, PowerPoint, archives, images, media, SQLite, code, fonts, and 100+ formats. Edits most of them. No INTERNET permission, no ads, no accounts: a ~5 MB Android app that runs entirely on the phone. Free for 30 files, then $5 once.
Hey PH. Solo dev here.
This started because opening email attachments on Android was ridiculous. One app for PDFs, another for spreadsheets, a third for archives, and every one of them wanted a subscription, an account, or to send the file to a server to "convert" it.
So I built one app that opens things. Then it grew into one that edits them too. PDFs: sign, fill forms, type, insert images, rearrange pages, merge, split, password-protect. Word and PowerPoint: text, formatting, tables, comments, footnotes, tracked changes. Excel: cells, formulas, sort, freeze panes, charts. Plus images, CSV, SQLite, Markdown, code, archives, fonts, certificates, and a text/hex view for anything unknown.
The unusual part is under the hood. The Office and PDF engines are written from scratch to run entirely on-device, so the app ships with no INTERNET permission at all. Not "we promise we don't upload your files". Android's own App info screen shows "No permissions requested." No ads, no analytics, no accounts either. A side effect of writing everything from scratch: the whole app is about a 5 MB download.
There are some limits, it's not desktop Office. Complex layouts render simplified, for example legacy .doc/.xls/.ppt open as extracted text only. I'm receiving feature requests daily and the app has much room to grow and improve.
Free to open your first 30 files, $5 one time to unlock. Android only for now.
I'll be around all day. Happy to answer any questions.
About Universal File Opener on Product Hunt
“Open and edit almost any file. Offline, no subscription.”
Universal File Opener was submitted on Product Hunt and earned 4 upvotes and 3 comments, placing #140 on the daily leaderboard. Opens PDF, Word, Excel, PowerPoint, archives, images, media, SQLite, code, fonts, and 100+ formats. Edits most of them. No INTERNET permission, no ads, no accounts: a ~5 MB Android app that runs entirely on the phone. Free for 30 files, then $5 once.
On the analytics side, Universal File Opener competes within Android, Productivity and Privacy — topics that collectively have 724.1k followers on Product Hunt. The dashboard above tracks how Universal File Opener performed against the three products that launched closest to it on the same day.
Who hunted Universal File Opener?
Universal File Opener was hunted by Krauq. 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 Universal File Opener including community comment highlights and product details, visit the product overview.
Krauq