Free Add Watermark to PDF
Stamp a text watermark across every page of a PDF. Choose diagonal or tiled style, set your own colour and opacity, then download the finished file.
Watermark PDF
Stamp a text watermark across every page — diagonal or tiled.
🔒 Files never leave your device — everything runs in your browser.
Mark Every Page Without Editing the Document
Fast, private and completely free.
Two Watermark Styles
Place a single diagonal watermark across the centre of the page, or repeat it in a tiled pattern for extra coverage.
Any Colour You Want
Pick a colour that stands out or blends in, whatever suits the document.
Adjustable Opacity
Set the watermark light enough that the original text stays fully readable underneath.
Applied to Every Page Automatically
One setup covers the whole document, there is no need to repeat the process page by page.
Your File Stays on Your Device
The watermark is added entirely in your browser, the PDF is never uploaded to a server.
Ready in Seconds
Watermarking a full document happens almost instantly, even on longer files.
Add a Watermark to Your PDF
Three simple steps.
Add Your PDF
Drop in the file you want to mark.
Set the Watermark Text
Type the text, then choose the style, colour and opacity.
Download the Watermarked File
Save a PDF with the watermark applied to every page.
Why Add a Watermark to a PDF
A watermark serves a simple purpose, it marks a document without changing the content itself. A page still reads exactly the same, but anyone viewing or printing it sees a clear label layered across it, draft, confidential, sample, or whatever text fits the situation.
Adding it once to the whole file is far quicker than editing each page individually in a document editor before exporting to PDF again.
Common Reasons to Watermark a PDF
A few typical situations:
- Marking an unfinished document as "Draft" before it is final
- Labelling a document "Confidential" before sharing it internally
- Adding "Sample" or "Preview" to a document being shared before purchase or approval
- Including a company name or reference across pages that might get printed or forwarded
Diagonal vs Tiled Watermarks
A single diagonal watermark across the centre of the page is usually enough to make the point without cluttering the document. A tiled, repeating pattern covers the page more thoroughly, which is useful if the document is likely to be cropped or photographed and a single centred mark could be cut out.
Frequently Asked Questions
Can I choose between a diagonal and a repeating watermark?
Yes, you can pick a single diagonal watermark across the page, or a tiled pattern that repeats.
Can I change the watermark colour?
Yes, you can set any colour you like for the watermark text.
Will the watermark make the original text hard to read?
You control the opacity, so you can keep it light enough that the page underneath stays fully legible.
Does the watermark apply to every page automatically?
Yes, one setup applies the watermark across the entire document.
Is my PDF uploaded to a server to add the watermark?
No, the watermark is applied entirely in your browser, the file is never uploaded anywhere.
Can I remove a watermark once it has been added?
No, once the watermark is applied and downloaded it becomes part of that file. Keep your original PDF if you may need an unmarked copy later.
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Mark every page in seconds, right in your browser. Free forever, no signup needed.