Add a watermark to a PDF
Stamp a word like CONFIDENTIAL or DRAFT, your name, or your logo across the pages of a PDF. You see a live preview of the real result, and the work happens in your browser, so the document is never uploaded.
Everything runs on your device. Nothing you add or type is sent to any server.
How to use it
- 01
Drop your PDF into the box above, or tap it to pick a file from your phone or computer.
- 02
Choose Text and type your watermark, or choose Image and add a PNG or JPG logo. Set the size, colour, opacity and angle.
- 03
Pick a spot on the 3 × 3 grid, or Tile to repeat the mark over the whole page. Limit it to some pages if you want.
- 04
Check the preview, then press Add watermark. The new file downloads with -watermarked added to its name.
When a watermark helps
A watermark tells everyone who opens the file what it is and where it came from. Mark a quotation or contract as DRAFT until it is final. Put CONFIDENTIAL on salary slips or internal reports. Add your studio name to design proofs, or your school's logo to notes you share with students.
When you send a copy of your Aadhaar, PAN or passport, a line such as "Only for bank KYC, 8 Nov 2026" makes it harder to reuse that copy for something else.
Hindi and other scripts
English text (and most Western European letters) is added as real PDF text, so it stays sharp at any zoom. Hindi, other scripts and symbols such as ₹ are drawn by your browser, which joins the letters correctly, and then added as a high-resolution image. It looks right on screen and in print, but it cannot be selected or searched as text.
What a watermark can and cannot do
Your original pages are not changed or re-compressed. The mark is drawn on top, so text stays selectable and images keep their quality. Be aware that a watermark is only a visible label. Someone with a PDF editor can often remove it, and it does not stop copying or printing. To control who can open the file, use Protect PDF as well.
Frequently asked questions
Will the watermark cover my text?
It sits on top of the page, so keep the opacity low (20 to 40 percent works well) and the text stays readable underneath. The preview shows the exact result before you download.
Does it work with scanned or sideways pages?
Yes. Scanned pages are images inside the PDF and take a watermark like any other page. Pages that are stored rotated are handled too, so the mark appears the right way up as you see the page.
Can I use my logo with a transparent background?
Yes. Use a PNG with transparency and only the logo itself is shown. JPG images always have a solid background.
Why can't it open my PDF?
The file may be damaged, or it may have a password or editing restriction. Remove the protection first with Unlock PDF, then try again.