Best free PDF tools 2026 (tested)
Most “free” PDF tools are free until you hit a signup wall, a watermark or a daily limit. We ran the same jobs through seven of them in July 2026 and wrote down exactly what happened — including where nopa is genuinely better and where it is not.
How we tested
We used one rule: a free PDF tool should get you to the result without an account, without a watermark, and without quietly uploading your file to a place you cannot see. Between the 21st and 23rd of July 2026 we ran the same everyday jobs — merge, split, compress, images to PDF — through each tool on a mid-range Android phone and a laptop.
For every tool we checked five things:
- Signup — can you download the result without creating an account?
- Watermark — is the free output clean, or stamped?
- Free limits — how many tasks, how big a file, how many pages before a paywall?
- Where the file is processed — does it leave your device for a server, or stay in your browser?
- Mobile speed — how quickly it works on a phone and a normal connection.
At a glance
The short version. The details, and who each tool is for, are below.
| Tool | Signup? | Watermark? | Free limits | Where files go |
|---|---|---|---|---|
| iLovePDF | Optional | None | Task + size caps; some tools Premium | Their server |
| Smallpdf | Pushed hard | None | ~2 tasks, then Pro | Their server |
| Sejda | No | None | 3 tasks/hour · 50 MB · 200 pages | Their server (auto-deleted) |
| PDF24 | No | None | Generous, ad-supported | Their server · free offline app |
| TinyWow | No | None | Fair-use, ad-supported | Their server (auto-deleted) |
| Adobe | To download | None | ~2 tasks, then Pro | Their server |
| nopa | No | None | Your device’s memory on huge files | Your browser — nothing uploaded |
iLovePDF
iLovePDF is the friendly all-rounder. Most common tasks work in the browser without an account and without a watermark, and the interface is hard to get wrong. The catches: files are uploaded to its servers, batch jobs and a few tools ask you to sign in, and it nudges you toward Premium once you do more than a little. Best for people who want a polished, do-everything site and do not mind their files touching a server.
Smallpdf
Smallpdf is the most polished of the bunch, and also the quickest to ask for money. You typically get a couple of free tasks before it wants a Pro account, and it pushes sign-in throughout. No watermark, files processed on its servers. Best for occasional use inside a workflow you already pay for — less so if you just need one quick, free job.
Sejda
Sejda is the quiet favourite of people who actually edit PDFs. It does real editing and OCR that most free tools skip, with no signup and no watermark. The limits are the trade-off: roughly three tasks an hour and 50 MB / 200 pages per document, and files go through its servers (then auto-delete). Best for real PDF editing and the occasional OCR job, as long as you stay under the hourly cap.
PDF24
PDF24 is the generous one. A huge toolset, no signup, no watermark, funded by ads rather than a paywall — and, unusually, a genuinely free desktop app for Windows that runs completely offline. Online jobs still go through its servers. Best for a wide range of tasks on a budget, and the offline app is a great pick if you want processing to stay on your own machine.
TinyWow
TinyWow throws in PDF, image, video and AI-writing tools for free with no account. It is handy and broad, but your file is uploaded, the pages carry ads, and free capacity flexes with demand. Files are deleted after about an hour. Best for a quick one-off when you do not want to install or sign up for anything.
Adobe Acrobat (online)
Adobe’s free online tools have the best conversion and OCR quality here — it is Adobe’s own engine — but they are the most gated. You can try a task, then a sign-in or a Pro prompt usually stands between you and the download. Files are processed on Adobe’s servers. Best when conversion fidelity matters more than speed or staying logged out.
nopa
Full disclosure: nopa is ours, so here is the honest version. nopa runs PDF tasks entirely in your browser — merge, split, compress, images to PDF and PDF to JPG — with no account, no watermark, and nothing uploaded. Your file never leaves the tab, which is the whole point.
The trade-offs are real. Because everything runs on your device, nopa does not do OCR, and it will not turn a PDF into an editable Word or Excel file — those need heavy server-side engines we deliberately do not run. Very large files are limited by your phone or laptop’s memory rather than a data-centre’s. Best for fast, private everyday PDF jobs where the file staying on your device matters more than OCR or format conversion.
So which should you use?
If you want one site that does nearly everything, iLovePDF or PDF24. If you need to edit or OCR a PDF, Sejda or Adobe. If you want the file to never leave your device, PDF24’s offline app or nopa. And if you just need to merge or compress something in ten seconds with no signup, any of PDF24, TinyWow or nopa will do — pick the one that asks the least of you. We tested this in July 2026 and refresh it quarterly, because every one of these plans can change.