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Free private browser tool

Document watermark maker [Free private tool]

Add a clear, purpose-specific watermark to an image of a passport, ID or supporting document before sharing it.

Your document never leaves your device

The image is opened and watermarked inside your browser. It is not uploaded to London for Cheap, stored on our server or added to an account.

1. Document

Choose an image

PDF files are available as an output, but the source file must be an image.

2. Purpose

Say exactly what the copy is for

30/140 characters. Add the recipient and date when useful, for example “FOR ABC LETTINGS ONLY — 10 AUG 2026”.

3. Appearance

Make it visible but readable

Choose an image to begin.

Live preview

Your protected copy

Local previewNo image selected
Your browser does not support the document preview.

Choose a document image to see the watermark here.

A watermark helps, but it is not a guarantee

Verify who is requesting the document, share only what is needed and use the organisation’s official secure channel. Some checks require a clean copy, so ask before adding a watermark.

Why add a watermark to an ID copy?

A specific watermark gives a copied document context. Wording such as “FOR ABC HOTEL CHECK-IN ONLY — 10 AUG 2026” makes the intended recipient, purpose and date visible if the file is later separated from the original conversation.

It does not encrypt the file, hide personal information or prevent determined editing. Read our guide to sharing a passport or ID copy more safely before sending sensitive information.

Document watermark questions

Is my passport or ID uploaded anywhere?
No. Your browser decodes the image and creates the downloads locally. London for Cheap never receives the file or the words you type into the editor.
What should the watermark say?
Name the exact purpose, recipient and date when possible. Avoid vague wording such as “COPY”. A useful example is “FOR ABC LETTINGS TENANCY CHECK ONLY — 10 AUG 2026”.
Can I upload a PDF?
Not in this version. Convert or photograph the relevant page first, then use JPG, PNG, WebP or AVIF. The finished watermarked copy can be downloaded as either PNG or PDF.
Does this make sending an identity document safe?
No tool can make an unnecessary or fraudulent request safe. Confirm the request independently, ask why the information is needed, share the minimum required and use an official secure upload route.
Why might a recipient reject a watermarked copy?
Some regulated or automated identity checks need a clear, unaltered image. Ask the recipient whether a watermark is accepted and keep it away from essential details when they need to read the document.

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