Free tool · No upload
Add a watermark to a PDF
Write one line across every page, diagonal or straight, in the colour and strength you choose. Bangla, Hindi, Arabic and other scripts shape correctly.
Lower keeps the page readable; higher makes the mark stand out.
Add a file to begin.
How to add a watermark to a PDF
- 1
Add the PDF.
- 2
Type the watermark text and pick layout, strength and colour.
- 3
Press Add watermark, then download the PDF or keep editing it.
Your PDF stays on your device
Most online PDF tools send your file to a server. This one runs in your browser instead, so there is nothing to delete later and nothing to leak.
- Works offline. Load the page, turn off the internet, and it still works.
- No account, no watermark. The result is yours, with nothing added.
Frequently asked questions
- Can the watermark be removed later?
- It is drawn into the page content, like any other text, so casual readers cannot switch it off. A determined editor could still remove it; no watermark is tamper-proof.
- Can I use an image as the watermark?
- Not on this page yet. Open the PDF in the editor, place the image on the first page and duplicate it onto the others.
- Is my document uploaded?
- No. The watermark is applied in your browser, and the page works offline.