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Watermark PDF

Add a text watermark, such as CONFIDENTIAL or DRAFT, to every page of your PDF

✓ Free✓ No registration✓ Fast✓ Secure

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Formatos aceptados: .pdf

All about Watermark PDF

Add a text watermark to every page of your PDF. The text is placed diagonally in the center of each page, in semi-transparent gray, so the content stays readable. It's the fastest way to mark a document as CONFIDENTIAL, DRAFT, COPY or with your company name before sharing it, and to discourage reuse without permission.

How to add a watermark to a PDF

All you need is the PDF and the watermark text:

Select or drag and drop your PDF file.

Type the watermark text, up to 60 characters.

Choose the intensity: light, medium or strong.

Click the button to apply it to all pages.

Download your watermarked PDF.

Technical details of the watermark

Diagonal and centered

The text follows the diagonal of each page and its size adjusts to the sheet, including landscape or rotated pages.

Semi-transparent

The light, medium or strong intensity controls the transparency, so the content underneath stays readable.

Supported characters

Supports accented letters, the ñ and common punctuation. Emojis and some special symbols are skipped because the PDF font doesn't include them.

What is a watermark on a PDF used for?

A watermark makes the status or origin of a document clear:

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Confidential documents: mark reports and contracts as CONFIDENTIAL before sending them.

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Drafts: show that a document is not the final version yet with DRAFT.

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Ownership: add your company or brand name to catalogs, proposals and portfolios.

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Copies of personal documents: mark a copy of your ID with its intended use, for example “For application X only”.

Tips for your watermark

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Use short uppercase text, such as CONFIDENTIAL or COPY: it looks bigger and clearer.

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Choose light intensity if the document has a lot of text and you want it to stay comfortable to read.

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When sending copies of your ID, state in the watermark what the copy is for: that makes it harder to use for anything else.

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If the PDF is protected, unlock it first with Unlock PDF.

Advantages of our tool

✓100% Free: No hidden costs or subscriptions
✓No registration: Start converting immediately
✓Fast: Conversion in seconds, not minutes
✓Secure: SSL encryption and automatic deletion
✓No limits: Convert as many files as you need
✓Compatible: Works on any device

Frequently asked questions about watermarking PDFs

How do I add a watermark to a PDF for free?

Upload your PDF, type the watermark text, choose the intensity and click the button. The watermark is applied to all pages and you download the result instantly.

Does the watermark cover the content?

No. It's semi-transparent and gray, so the text and images underneath remain visible. If you want it to be even less intrusive, choose the light intensity.

Can the watermark be removed afterward?

The watermark is embedded in each page. Someone with advanced editing software might try to remove it, but it can't be removed with a single click. Keep your original PDF without the watermark.

Can I use an image or a logo as a watermark?

For now the tool adds text watermarks. You can type your company or brand name.

Frequently asked questions about Watermark PDF

Is it safe to use this tool?

Yes, completely safe. We use SSL encryption to protect your files and automatically delete them from our servers after 1 hour.

What is the maximum file size?

You can convert files up to 20MB. For larger files, we recommend compressing them first.

Do I need to create an account?

No, you don't need to register or create an account. You can use the tool immediately without any registration.