Honest comparison
PDF24 alternative
PDF24 is one of the few genuinely free competitors, and its Windows desktop tool processes locally. The comparison here is narrower and more interesting than usual.
PDF24 deserves credit: it is free without a subscription, has a large tool catalogue, and offers a Windows desktop application that processes files on your own machine. That makes it a closer match to what we do than most, so this comparison is about a narrower difference than the others.
What PDF24 does well
Starting here because any comparison that skips it is not worth reading.
- A free local desktop applicationThe PDF24 Creator for Windows processes files on your machine, which gives the same confidentiality benefit as a client-side browser tool.
- A very large tool cataloguePDF24 covers a wide range of operations, including several we do not offer.
- No subscriptionGenuinely free, which is not true of most competitors in this space.
- A virtual printerThe desktop tool installs a print-to-PDF driver that works from any application — convenient and outside what a web page can do.
Install locally, or run nothing at all
PDF24 gives you two options: the online tools, which upload your file to their servers, or the Windows desktop application, which processes locally but must be installed and is Windows-only.
Pixellwork is a third option — local processing with nothing to install, on any operating system with a modern browser. No administrator rights, no download, no Windows requirement.
If you are on a managed work machine where you cannot install software, or on a Mac, Linux box, Chromebook or phone, that difference is the whole point. If you are on a personal Windows PC and happy to install, PDF24's desktop tool is a perfectly good answer.
Side by side
Green marks where Pixellwork is ahead, amber where PDF24 is. Reviewed October 2026 — check their site for current plans and limits, which change.
| Feature | PDF24 | Pixellwork |
|---|---|---|
| Installation required for local processing | Yes — Windows desktop app | No |
| Works on macOS, Linux, ChromeOS, mobile | Online tools only | Yes, any modern browser |
| Online tools upload files | Yes | No |
| Account required | No | No |
| Cost | Free | Free |
| Virtual PDF printer | Yes | No |
| Tool catalogue size | Larger | 18 focused tools |
| Offline desktop use | Yes, full app | Page must load once first |
Which should you choose
Stay with PDF24 if…
- You are on Windows, can install software, and want a full offline application.
- You want a virtual PDF printer available from any program.
- You need a tool from their catalogue that we do not offer.
Use Pixellwork if…
- You cannot install software — a managed work machine, a library computer, a Chromebook.
- You are on macOS, Linux, ChromeOS, or a phone.
- You want local processing without downloading an executable.
- You want to OCR a scan in the browser without uploading it.
The equivalent tool here
If you came looking for a specific PDF24 tool, this is where it lives.
Frequently asked questions
Is PDF24 safe to use?
The Windows desktop application processes files on your own machine, which is a sound design. Their online tools upload files to their servers like most web converters. Which one you are using matters more than the brand.
Why use a browser tool instead of installing PDF24?
Three reasons: you may not be able to install software on a managed machine, PDF24's desktop app is Windows-only, and a browser tool works the same on any device including a phone. If none of those apply to you, their desktop app is a good option.
Is a browser-based tool actually as capable as an uploading one?
For the operations covered here — merging, splitting, compressing, converting, OCR — yes. The same open-source libraries do the work either way; the only difference is whose processor runs them. Where server-side tools genuinely pull ahead is in features that need an account or persistent storage: e-signature workflows, shared team folders, and cloud-drive integrations.
How can I verify files really are not uploaded?
Load the tool page, disconnect from the internet, then process a file. A client-side tool carries on working because everything it needs is already in the page. A server-based one fails immediately. You can also open your browser's developer tools with F12, switch to the Network tab, and watch for an outgoing request carrying your file.
What is the catch?
Three honest ones. Processing uses your own CPU, so a large OCR job takes longer than it would on a server farm. Very large files are bounded by your device's memory. And we deliberately do not offer accounts, cloud storage, e-signatures or team features — if you need those, a server-based product is the right choice.
Nothing is uploaded
Try it on a real file
No account, no size limit, no upload. Load a tool, disconnect your internet, and it still works — which is the only proof worth trusting.
PDF24 is a trademark of its respective owner. Pixellwork is not affiliated with, endorsed by, or sponsored by PDF24. Comparison reviewed October 2026 and based on publicly documented behaviour; features and plans change, so please verify current details on their website.