FileSeb
Convert, compress, edit and secure your documents and images in seconds.
*Illustrative figures — FileSeb doesn't track individual files or users to produce them.
Every everyday PDF task, handled locally in your browser.
Convert, compress, and clean up images without losing quality you care about.
Beyond conversion — clean up, mark up, and generate the small things your workday needs.
Get your work done in 3 simple steps.
Drag & drop your file or browse
Select your preferred settings (if any)
Get your converted file instantly
Every feature below is a real, working part of how FileSeb runs — not just marketing copy.
Every tool runs on-device — most files convert in seconds with no server queue to wait on.
Your files are never uploaded anywhere. Everything happens locally, right in your browser.
No account, no email, no paywall. Open a tool and start converting immediately.
Nothing is ever transmitted to a server, so there's nothing to intercept, leak, or store.
Instant, on-device insight into resolution, page text, and quality — before you convert.
Phone, tablet, or desktop — every tool is touch-friendly and installable as an app.
We built FileSeb the way we'd want a tool handling our own contracts and photos to work — nothing leaves your device, ever.
Every tool runs with JavaScript in your browser — your file never leaves your device to be converted.
Because we never receive your files, there's no server copy to worry about, expire, or leak.
There's no backend pipeline to send your content through — nobody but you ever sees it.
No app store required — install FileSeb straight from your browser and open it like any other app, even offline for tools that don't need a fresh download.
Install FileSeb as a desktop app with one click — it'll open in its own window, pinned to your taskbar or dock.
Add FileSeb to your home screen from Chrome and launch it just like any app from the Play Store.
Safari doesn't allow one-click installs, but Add to Home Screen takes about five seconds — we'll show you how.
FileSeb is a product of RBTech — built to make everyday file conversion fast, private, and free of friction.
RBTech builds tools that respect the person using them. FileSeb runs every conversion locally in your browser, on purpose — so a document you're not ready to share with anyone stays that way, even while you convert it.
"A file tool should do its job and get out of the way — no accounts, no waiting, no giving up your files to use them."
FileSeb runs entirely in your browser — no accounts, no subscriptions, no paywalls on any of the 60 tools. If one of them saved you a headache today, supporting on Ko-fi helps keep it running and funds building the next one.
Everything people usually ask before their first conversion.
Yes. Every tool is free, with no hidden tiers, watermarks, or file-count limits — nothing to upgrade to.
No. Every tool runs with JavaScript inside your own browser. Your file is read into memory on your device and never transmitted anywhere.
No sign-up, no email, no password. Open a tool and start converting right away.
PDF, Word, Excel, PowerPoint, JPG, PNG, WEBP, video, audio, and JSON across 60 tools — merging, splitting, compressing, converting, rotating, watermarking, OCR, background removal, QR codes, and more.
Yes — every tool is touch-friendly, and the site can be installed as an app on Android and iOS home screens.
There's no artificial limit we impose. The practical ceiling is your own device's memory and processing power, since everything runs locally rather than on a server.
You've converted a few files with us — a quick review helps other people find these free tools.