Watermark
Add a watermark to a PDF
Put DRAFT, CONFIDENTIAL, COPY or your own logo across a PDF's pages, check it on the page, and download the new file. It all happens in your browser.
Drop a PDF here
or
Free, no sign-up. Under 50 MiB. Not uploaded to our servers.
How it works
Three steps, on your device
- 1
Choose the PDF
It opens in the watermark tool on this device, and is not uploaded to our servers.
- 2
Set the watermark
Text or an image; size, colour, opacity and angle; once or tiled; the pages to mark. The preview is the actual result, page by page.
- 3
Download it
Save the new PDF, or share it straight from your phone. The original file is left as it was.
What you can set
Text or an image
One click for CONFIDENTIAL, DRAFT, COPY or SAMPLE, or type your own — in Chinese, Japanese or Korean too. Or use a PNG or JPEG — a logo or a stamp — under 10 MiB.
Where it sits
Centred and sized to fit the page by default, at 45°. Or pin it to a corner or an edge, or tile it across the whole page.
Over or under the content
Over the page, or behind its text and pictures. A scanned page or a solid background hides a watermark placed under it, and the preview shows that before you download.
Which pages
All of them, odd or even pages, a list such as 1-3, 5, 8-, and skip the first page.
Where it does not work
- PDFs under 50 MiB and up to 500 pages. A phone with little memory may manage less.
- Password-protected and encrypted PDFs cannot be opened here. The editor can unlock one if you have its password.
- Text in Latin letters, Chinese, Japanese or Korean; other scripts are not supported yet, but an image watermark works in any language.
- Adding a watermark to a digitally signed PDF invalidates the signature. The tool asks first.
Common questions
Before you start
Is it free?
Yes. No account, no limit on how many files, and no watermark of ours added.
Is my PDF uploaded?
Not to our servers. Your browser reads the file and writes the new one on your device, and the page that does the work loads no advertising or third-party analytics. We receive only a count of what the tool did — that it ran and roughly how many pages — never the file, its name or the watermark text. If you choose the file on this page, your browser keeps it briefly in its own storage to hand it to the tool, and removes it as soon as the tool opens it. The privacy policy has the details.
Does it work on a phone?
Yes, on recent iPhone and Android browsers. Very large files are better done on a computer, which has more memory.
Does a watermark protect my PDF?
No. It is a visible label that tells a reader a document is a draft, a copy or meant for them alone. It does not stop anyone copying the text underneath, and someone with a PDF editor can remove it or crop it off. To take information out of a file, a watermark is not the tool. Comments, highlights and form fields are drawn above a page’s content by every PDF reader, so they stay above the watermark even when it is placed over the content.
Which languages can the text be in?
Latin letters (Helvetica, Times or Courier), Chinese, Japanese or Korean (Noto Sans CJK). The Chinese, Japanese and Korean fonts hold the common characters — about 7,800 Chinese and Japanese characters with kana, and 2,350 Korean syllables — and are downloaded from this site the first time they are needed. Japanese is drawn with the Chinese forms of the characters the two share. Other scripts are not supported yet; an image watermark works in any language.
Can I remove a watermark with this?
No. This tool only adds one.
Can I change the words in the PDF too?
That is what the PDF editor is for: retype words already in the file, in its own font where the file allows.
Got a PDF to mark as a draft?
Drop a PDF here
or
Free, no sign-up. Under 50 MiB. Not uploaded to our servers.