Available for macOS and Windows

Every PDF tool you need. On your own machine.

Merge, reorder, sign, stamp, annotate, fill forms, OCR and encrypt — in one fast desktop app. No uploads, no accounts, no watermarks.

Download for macOS Windows — coming soon

Free to try · Signed and notarised · Works offline

contract-2026.pdf — 1TruePDF
Stamp APPROVED — done
APPROVED
ORGANISE
Merge PDFs
Rotate page
ANNOTATE
Stamp
Sign document
Add note
Everything included

One app instead of ten browser tabs

The jobs you actually do with PDFs, done properly — with undo, redo and a version history behind every one of them.

How it works

Open, edit, save. That is the whole loop.

Open or drop a PDF

Drag a file onto the window, or drop several at once to merge them. Your document opens instantly — nothing leaves your machine.

Work on it

Reorder pages by dragging thumbnails, rotate, sign, stamp, highlight, fill forms. Every action is undoable and every version is kept.

Save it

Save over the original or export a copy, protected with AES-256 and the print and copy permissions you choose.

Private by design

Your documents never leave your computer

Most "free PDF tools" upload your contract to a server you have never heard of. 1TruePDF does all of its work locally, which is why it also works on a plane.

  • No uploads. Every operation runs on your own CPU.
  • No account. Install it and open a file. That is the onboarding.
  • No watermarks. The file you save is the file you made.
  • Signed and notarised. macOS builds pass Gatekeeper without warnings.
100%
Processed locally
0
Files uploaded
AES-256
Encryption
2
Platforms supported
Questions

Frequently asked

Get 1TruePDF

One download. No sign-up. Works offline from the first second.

macOS 12 or later · Windows 10 or later