PDFs done privately.
PDFslime is a set of free PDF tools that run entirely in your browser. Your files never leave your device — not now, not ever.
Why PDFslime exists
Most PDF tools online require you to upload files to their servers. You have no idea what happens to them — who sees them, how long they're stored, whether they're ever deleted.
Your data, your device
Every tool in PDFslime runs in your browser using JavaScript and libraries like pdf-lib and pdf.js. Files are processed on your device using your CPU and memory. Nothing is uploaded anywhere.
This isn't a cloud feature — it's the architecture. There's no server to trust because there's no server involved.
Built for real documents
Financial records. Legal contracts. Medical forms. Tax returns. These are the documents people actually need to process — and they're the ones you can't afford to send to a third party. PDFslime was built for exactly this: handling sensitive documents without the risk.
No compromises on features
Private doesn't mean limited. PDFslime gives you a full studio: merge, split, compress, protect, unlock, OCR, rotate, add page numbers, convert images — all with real-time preview and editing.
Made with care
PDFslime is built by a small team obsessed with clean interfaces, smooth interactions, and tools that just work. Every detail — from the page transitions to the download flow — is crafted to feel polished.
Everything you need
A complete toolkit for working with PDFs — no sign-up, no watermarks, no catch.
What we stand for
These aren't marketing claims — they're architectural guarantees.
Privacy by default
Your files stay on your device. We can't see them even if we wanted to — and we don't want to.
No tracking
No analytics cookies. No fingerprinting. No behavioral tracking. Your usage is your business.
No sign-ups
No email, no password, no personal data. Open the tool and start working immediately.
Transparent
The code is auditable. See exactly how your files are processed — no black boxes.
Free, truly
No hidden fees. No premium upsells on basic features. Everything is free.
Fast by design
Local processing means no upload wait times. Speed limited only by your device.
Ready to try it?
No sign-up. No email. No uploads. Just open the tool and start working.
Open PDF Studio