6 min read
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 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 four 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?
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 | No task cap · 100 MB a file (50 MB on phones); scans: 20 pages per run, printed text | 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 edit PDFs for real. 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 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 weigh this section accordingly. It is free with no signup, no watermark and no task limit — convert as many files as you need. The PDF list covers the everyday jobs: merge, split, compress, sign, fill in, PDF to Word, Word to PDF, images to PDF and PDF to JPG. Everything runs in your browser, so there is no upload, no queue and nothing to meter — and it works on a phone too (files up to 50 MB).
The trade-offs: nopa reads scans and photos of pages on the PDF to Word, Image to text and PDF to Markdown pages, in seven languages — Russian, English, Spanish, German, French, Turkish and Indonesian (you pick the document’s language before reading); printed text only, not handwriting. Scan recognition reads up to 20 pages per run, and Organize takes PDFs of up to 50 pages. Recognition runs in your browser (the first time it downloads a reading model of about 4–5 MB; nothing is uploaded) and can misread a character, so check names, numbers and dates. PDF to Word carries the text, headings, lists, bold, italic, pictures and tables with clear columns, not merged cells or the exact layout, and you see the result before you download it. A file can be up to 100 MB on a computer and 50 MB on a phone, because the work happens in your device’s memory rather than a data centre’s. Best for fast, free everyday PDF jobs on any device — including the Word ↔ PDF conversions other sites put behind a sign-in.
So which should you use?
If you want one site that does nearly everything, iLovePDF or PDF24. If you need to edit a PDF, OCR a scan in another language or get a pixel-exact conversion, Sejda or Adobe; to turn a scan into editable Word without uploading it, nopa. If you want the file to never leave your device, PDF24’s offline app or nopa. And if you just need to merge, compress or turn a PDF into Word 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 plans change — check a tool’s pricing page before you pay; nopa’s own row was updated in September 2026.