Can I adjust watermark transparency?

Yes. You can adjust opacity from 10% to 90% so text remains readable underneath.

Can I use an image as a watermark?

This tool adds text watermarks only.

Can I change the watermark angle?

Yes. A 45° diagonal is the most common choice; 0° gives a horizontal watermark.

No. The watermark is added in your browser.

PDF Watermark Adder

Stamp diagonal or horizontal text watermarks (e.g. CONFIDENTIAL, DRAFT, SAMPLE) across all pages with custom opacity and angles.

Click to select PDF document or drag and drop here

Stamp diagonal or horizontal text watermarks (CONFIDENTIAL, DRAFT, SAMPLE) in your browser.

How to use PDF Watermark Adder

Upload a PDF document.
Enter watermark text or choose a preset (CONFIDENTIAL, DRAFT).
Adjust opacity and angle.
Download the watermarked PDF.

About PDF Watermark Adder

Stamp a text watermark such as CONFIDENTIAL, DRAFT, or your company name across every page of a PDF. Adjust the opacity and angle so the watermark is clearly visible but the page stays readable.

Making a good watermark

A diagonal watermark at 45° is hard to crop out and does not line up with the text, which keeps both readable. Opacity between 15 and 30 percent is visible on screen and in print without hiding the content underneath.

Short words work best: DRAFT, CONFIDENTIAL, COPY, or SAMPLE. A recipient's name makes leaked copies traceable.

How secure is it

The watermark is added as text on top of each page. It deters casual copying, but someone with PDF editing software could remove it. For stronger protection, convert the watermarked PDF to images or flatten it before sharing.

Common uses

Draft documents: Mark early versions so they are not mistaken for final ones.
Confidential files: Label sensitive documents before sharing.
Samples and previews: Watermark sample pages of a paid document.
Tracking copies: Add a recipient's name to discourage sharing.

Questions about PDF Watermark Adder

Can I adjust watermark transparency?: Yes. You can adjust opacity from 10% to 90% so text remains readable underneath.
Can I use an image as a watermark?: This tool adds text watermarks only.
Does the watermark appear on every page?: Yes, centered on each page.
Can I change the watermark angle?: Yes. A 45° diagonal is the most common choice; 0° gives a horizontal watermark.
Is my PDF uploaded?: No. The watermark is added in your browser.

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Comments

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