Watermark PDF
Stamp your PDF with text across every page. Set the words, size, and opacity, then download. Do one file, or add several and stamp them all the same way and download a ZIP. It all runs in your browser, so nothing is uploaded.
100% private. Your files are processed entirely in your browser and never uploaded.
Why watermark your PDF with frisqoo
100% private
The watermark is drawn inside your browser. Your PDF is never uploaded to a server.
Clear diagonal stamp
Your text sits across the center of every page, readable but unmistakable.
Size and opacity
Make it a faint background mark or a bold, prominent stamp.
Stamp in bulk
Add several PDFs and mark them all the same way, then download a ZIP.
Content untouched
The stamp is a new layer on top, so your text and images stay exactly as they were.
Any device
Runs in any modern browser on phone, tablet, or computer. Nothing to install.
How to watermark a PDF
- Add your PDF by dropping it in the box above, or add several at once, then type your watermark text.
- Set the size and the opacity so the stamp is as faint or as bold as you need.
- Tap Add watermark. One file downloads on its own; several are stamped together, to download each on its own or all as a ZIP.
Everything runs on your device, so it is fast and your files stay private, even with no internet once the page has loaded.
Set the text, size, and opacity
Type any words you like, such as CONFIDENTIAL, DRAFT, a company name, or a date. The stamp is placed diagonally across the center of every page in a light gray so it reads clearly without hiding the content beneath it. Choose a size to suit the page, then set the opacity: a low value leaves a faint background mark, while a higher value makes the watermark bold and hard to miss.
Watermark several PDFs at once
Add a single PDF and it is stamped and downloaded on its own. Add two or more and every file is watermarked with the same text, size, and opacity, then you can download each stamped file by itself or grab them all as one ZIP. Files are processed one at a time, so even a large batch stays light on memory, and any file that cannot be read is skipped so the rest still finish. It is the quick way to mark a whole set of documents the same way in one pass.
What changes, and what does not
- A diagonal text stamp added across the center of every page.
- The same text, size, and opacity applied to every page and every file in a batch.
- Your original text and images left exactly as they were, at full quality.
- No change to the content under the stamp.
- No upload, no watermark on the tool itself, and no page limit.
Private and free, with no upload
Most online tools send your file to a server to stamp it, then make you wait for an upload and a download. This one does the work inside your browser, so there is no upload and no waiting. It is free with no watermark on the tool and no page limits, which makes it a safe, fast choice for contracts, drafts, and anything confidential.
Common ways people watermark PDFs
- Marking a document CONFIDENTIAL before sharing it.
- Stamping DRAFT across a proposal that is still in review.
- Adding a company name or date across every page of a report.
- Watermarking a whole batch of files the same way in one pass.
- Labeling copies so you can tell versions apart at a glance.
FAQs about Watermark PDF
Are my files uploaded to add a watermark?
No. The watermark is drawn inside your browser on your own device. Nothing is sent to a server, so your document stays private the whole time you work, and closing the tab leaves nothing behind.
Where does the watermark appear?
Your text is placed diagonally across the center of every page in a light gray, so it marks the document clearly while keeping the content underneath readable.
Can I change how strong it looks?
Yes. Set the size and the opacity. A lower opacity gives a faint background stamp, while a higher value makes the watermark bold and prominent.
Can I watermark several PDFs at once?
Yes. Add several files and they are all stamped with the same text, size, and opacity. Download each stamped file on its own, or grab them all as a single ZIP. Files are processed one at a time, so a large batch will not overwhelm your device.
Does it change my original content?
No. The watermark is drawn on top as a new layer, so the existing text and images are untouched and nothing under the stamp is altered.
Can I remove the watermark later?
Not from here. The stamp is baked into the saved PDF, so keep your original file if you may need a clean copy. This tool only adds a watermark; it does not take one off.
What do the saved files get named?
A single file saves as your-file-watermarked.pdf, keeping the original name. In a batch, each file follows the same pattern, and the ZIP is named frisqoo_watermarked.zip.
Is it free?
Yes. No sign-up, no watermark on the tool itself, and no size limit. It works the same on phones, tablets, and computers in any modern browser.