PDF24 is the rare PDF toolkit that imposes essentially no limits: no registration, no daily task counter, no watermark. It also ships a desktop version that runs entirely offline.
Functionally it covers the standard set — merge, split, compress, convert between PDF and Office or image formats, rotate, extract, protect, unlock and add watermarks. What distinguishes it is the absence of friction: there is no sign-up wall and no "you have used your two free tasks today" message.
The desktop application is the standout feature. It performs the same operations locally on Windows, meaning files never leave your computer. For confidential documents or working without a reliable connection, that is a genuine advantage over every cloud-only competitor.
The web interface is more utilitarian than the polished designs of paid rivals, but it is fast and complete.
| Registration | Not required |
|---|---|
| Watermark | None |
| Task limits | None on the free web tools |
| Main tools | Merge, split, compress, convert, rotate, extract, protect, unlock, watermark |
| Desktop version | Yes — Windows, runs fully offline |
| Cost | Free |
| Processing | Server-side online; local on desktop |
Check before you rely on it: free quotas, file limits and pricing change frequently. Confirm current terms on the official site before depending on it for regular work.
Anyone who hits the limits of other free PDF tools, users handling confidential documents who want an offline option, and people who need unlimited processing without paying. The desktop app is the strongest reason to choose it.
Yes. The web tools and the desktop application are free, with no registration, no watermark and no daily task limit.
No meaningful ones on the free web tools, which is unusual among PDF sites.
Yes, a Windows application that performs the same operations fully offline.
The desktop version is, because files never leave your machine. The online version uploads files like any other cloud tool.
No. It can add watermarks you specify, but it never stamps its own branding onto output.
PDF to and from common Office and image formats, among others.