Watermarking Documents Before You Share Them
Adding a watermark to a copy of your ID or documents makes it harder to reuse for fraud. Simple ways to watermark on a phone or computer, and what to write.
When you send a copy of your passport, ID card, utility bill or bank statement, you lose control of it. A simple watermark stating who the copy is for and why makes it much harder for anyone to reuse it for something else, such as opening an account or passing an identity check.
What to write
- Who: the organization receiving it.
- Why: the specific purpose.
- When: the date.
Place the text across the image, overlapping the photo or edges, but keep key details such as your name and document number readable if the recipient needs them.
How to watermark on a phone
- Open the photo in your phone's built-in editor and use the markup, text or draw tool to add the text across the image.
- Make the text semi-transparent if the tool allows.
- Save it as a copy, and send the copy.
Some reputable apps and password managers offer watermarking; check their permissions before installing.
How to watermark on a computer
- Insert the image into a document or presentation, add a text box across it, set it to partly transparent, and export as a PDF or image.
- Many PDF tools have a "watermark" option.
Avoid uploading your ID to unknown online watermark websites. That defeats the purpose. Use tools on your own device.
Other good habits
- Share only the pages and documents required.
- Use official upload portals rather than email or chat where possible.
- Delete copies from your downloads and messages afterwards.
- Keep a note of who you sent documents to and when.
See protecting your passport and ID copies.
Asked to send documents to someone you are unsure of? Paste the request into CyberWatch AI Scan for a free check.
For more, read about protecting your identity in our complete guide.
Frequently asked questions
Does a watermark stop fraud completely?
No, but it makes a copy much harder to reuse. A document clearly marked 'For XYZ Lettings rental check only, 2 Oct 2026' is awkward to present anywhere else.
Will organizations accept a watermarked ID?
Many will, as long as the key details remain readable. Some regulated checks require unmarked images through their own app; follow their official process in that case.
What should the watermark say?
Who it is for, why, and the date, for example: 'For [organization] [purpose] only, [date]'.
Sources
- Protect Your Personal Information From Hackers and Scammers, US Federal Trade Commission
- What To Know About Identity Theft, US Federal Trade Commission
- Top tips for staying secure online, UK National Cyber Security Centre
