How to watermark a PDF
- Tap Choose file and pick your PDF.
- Type the watermark text, for example CONFIDENTIAL or Only for SBI loan.
- Choose Centered diagonal text or Tiled to repeat it across the page, and set size, colour and transparency.
- Press the button and download the watermarked PDF.
Protect your ID copies
When you share an Aadhaar, PAN, passport or bank statement copy, a watermark like For KYC at ABC Bank only, 10 Nov 2026 makes it much harder for anyone to reuse the copy for something else. Tiled text across the whole page is the hardest to crop out.
Safe for private documents
Watermarking happens inside your own browser. Your file is not uploaded to our server, so Aadhaar copies, marksheets, bank statements and office papers stay on your phone or computer. There is no sign-up, no daily limit and no watermark, and it works in Chrome, Edge, Firefox and Safari on Android, iPhone, Windows and Mac.
Other uses
- Mark drafts as DRAFT before sending for review.
- Put your shop or coaching name on price lists and study notes you share.
- Mark a document as COPY or SAMPLE.
Choosing size, angle and transparency
A watermark should be easy to see but should not hide the document. An opacity around 0.2 to 0.3 works for most pages. The default diagonal angle runs corner to corner and is hard to cut away without damaging the page. Use the tiled layout for ID documents, so the text appears many times across the whole page. Pick a colour that stands out from the page, such as grey on a white document or red for a strong warning. Include a date or purpose in the text, because a watermark that says who the copy was made for is much more useful than a plain word.
Related tools
- Add page numbers too with Add Page Numbers.
- Add text or a signature in one spot with Edit PDF.
Frequently asked questions
How do I add CONFIDENTIAL to every page?
Type CONFIDENTIAL as the watermark text, choose Centered and press the button.
Can I make the watermark light?
Yes. Lower the opacity so the page underneath stays readable.
Should I watermark my Aadhaar copy?
It is a good idea. Write who the copy is for and the date.
Are my files uploaded to a server?
No. The file is processed inside your browser and is never sent to our server.
Can the watermark be removed?
It is drawn into the page, so it cannot be removed with a simple PDF reader.