comparison
The best free PDF watermark tools
The best free PDF watermark tool depends on what you are putting on the page. PDF24 is the only option here with no published limits at all, but its web tool is text only. Sejda has the deepest free controls and the worst hourly cap. iLovePDF and Smallpdf are the safe general choices with daily limits, PDF Candy throttles downloads to about an hour, and our tool trades unlimited use for a clear 5-job day and image watermarks in the free tier. Every figure comes from the vendors' own pages, checked 6 October 2026.
How we shortlisted
Plenty of lists rank tools by popularity. We ranked them by the things that decide whether a free tool is usable on an ordinary working day, and dropped anything that failed more than one of them.
- Can the watermark be added without creating an account?
- Are the free limits published as real numbers rather than the word limited?
- Which controls are free: images, opacity, rotation, page ranges?
- How long is the file kept, and does the vendor say so?
- Does the free output carry the vendor's own mark?
Six free watermark tools compared
| Tool | Free limits | Free watermark types | File kept for | Verdict |
|---|---|---|---|---|
| WalkingPDF (ours) | 6 jobs a day, 100 MB, 300 pages | Text and image; diagonal, behind, footer and tiled styles, with page ranges | 1 hour | Best when you need a logo or page selection without paying |
| PDF24 | None published; no signup | Text only, with nine positions and a fill-page pattern | 1 hour, servers in Germany | The strongest genuinely unlimited free option |
| Sejda | 3 tasks an hour, one file each, 200 pages or 50 MB | Text and image, page ranges, saved templates | 2 hours | Deepest free controls, but the hourly cap stops busy work |
| iLovePDF | 100 MB, 2 files per batch, daily use described as limited | Text and image, with typography and transparency | 2 hours | The safest all-round suite; 4.9 out of 5 from 13,769 reviews |
| Smallpdf | Daily download limit and a size cap, neither published as a number | Text only; logos need the paid editor | 1 hour | Fine if you already pay for it; thin as a free watermark tool |
| PDF Candy | About one download an hour observed, no batch on free | Text or image, with first and last page exclusion | 2 hours | Capable controls, punished by the download throttle |
Limits and retention from each vendor's own tool, pricing and privacy pages, and the rating from Trustpilot, as recorded in the October 2026 competitive research. Accessed 6 October 2026; figures change, verify at the source.
What the free tiers have in common
The pattern across this category is consistent, and knowing it saves you from surprises mid-task. Free tiers are unlimited in marketing and throttled in practice, and the wall appears at the moment of greatest annoyance: after the upload, before the download.
- The limits sit at the download, not the upload, so you discover them when the work is already done.
- Every online tool here uploads your file to a server, whatever the marketing says about security.
- Caps are often unpublished: Smallpdf says daily download limit and limited size, without numbers.
- Adverts pay for the genuinely free options: PDF24 states it is 100% free thanks to advertising.
- Hourly throttles hurt more than daily ones, because they interrupt work already in progress.
Which free tool to pick
| If you need... | Use | Because |
|---|---|---|
| A logo or image on every page | WalkingPDF or PDF Candy | PDF24 and Smallpdf limit their free watermark tools to text |
| Unlimited text marks with no signup | PDF24 | No published file-size, page or task cap |
| Page ranges or odd and even pages | WalkingPDF or Sejda | Both publish page selection on the free tier |
| Batch on a free tier | Smallpdf or iLovePDF | Free batch of 2 files at iLovePDF; Smallpdf also allows free batch |
| The deepest set of controls | Sejda | Font, rotation, position and templates, held back by 3 tasks an hour |
| Files that must stay on your machine | A desktop or client-side application | No upload means no retention question at all |
Frequently asked questions
What is the best free PDF watermark tool?
For unlimited text marks with no signup, PDF24, which publishes no file-size, page or task cap. For logos, page ranges and a clear daily allowance, this tool. Sejda is the answer if you want the widest set of free controls and do not mind waiting an hour between tasks.
Which free watermark tool has no limits at all?
PDF24 is the only major tool in this list that publishes no limits: no file-size cap, no page cap and no task cap, with no registration. Most others throttle by the hour or the day, and several describe their free tier only as limited without giving a number.
Do free watermark tools add their own mark to the file?
Some do. Our research records Watermarkly's free output as branded, and a third-party review claims some Sejda tools add a Sejda watermark on the free plan, which we could not confirm on Sejda's own pages. The large suites do not advertise branded output, so check the finished file before you send it.
Is a free online watermark tool safe for work documents?
It depends on retention, so read the vendor's own policy first. The tools here publish one or two hours before deletion, and this tool publishes one hour with no account required. For documents that may not be uploaded at all, skip online tools and use desktop software that processes files locally.