PDF Offline Studio

Merge, sign, redact and organise PDFs — every tool runs on your own device. The app has no internet permission at all, so your documents cannot leave it.

Every PDF tool you need. None of your documents ever leave your device.

Most free PDF apps quietly upload your files to a server to do the work. This one doesn't — because it can't. The app is built with no internet permission at all. Your contracts, IDs, medical records and tax forms are handled entirely on your phone or Mac.

It doesn't keep them either. There's no library and no cloud folder: you open a file, work on it, and save the result wherever you like. Nothing is left behind.

PAGES

• Merge several PDFs into one
• Split a PDF — see exactly where it will divide before you commit
• Extract only the pages you want
• Delete, rotate and reorder pages by dragging

MARK UP

• Draw, highlight and add text anywhere on the page
• Sign with your finger or mouse
• Stamp a page — Draft, Confidential, Approved and eleven more, or make your own
• Watermark every page, once or tiled
• Add page numbers

SECURITY

• Redact — removes what's underneath instead of covering it
• Flatten PDF — fixes your marks into the page so nobody can move them
• Lock a PDF with a password, or remove one you know

CONVERT

• PDF to images, images to PDF
• Compress — and it tells you honestly when there's nothing to gain

Redaction is the one worth explaining. Drawing a black box over a name doesn't remove it — anyone can still select the text underneath, and people have lost jobs over exactly that. Redact rebuilds the pages so what you covered is genuinely not in the file, then checks its own work and refuses to hand you the result if any readable text survived.

BUILT FOR PRIVACY, NOT MARKETED AS IT

• No internet permission — verifiable, not a promise
• No library, no cache, no account, no sign-up
• No ads, no analytics, no tracking, no crash reporting
• Works on a plane, in a tunnel, anywhere

Your documents are never stored at all.

Free. No subscription, no unlock, no Pro tier.

Available in English, Spanish, Portuguese, German, French and Italian.