Add Watermark to PDF
Add Watermark to PDF
Stamp a text watermark diagonally across every page — ideal for drafts, samples, and confidential files. All in your browser.
Add Watermark to PDF stamps a word or short phrase diagonally across every page of your document. Watermarks such as DRAFT, CONFIDENTIAL, SAMPLE, or your business name make the status of a file obvious at a glance, discourage casual copying, and remind readers not to treat a preview as the final version. Photographers, teachers, offices, and freelancers all use them when sharing work that is not yet final or not meant for wider distribution.
You control the text, the size, and how faint or strong the mark appears. A low opacity keeps the watermark visible without hiding the content underneath, which is usually the right balance for review copies. The text is drawn at a fixed diagonal angle across the centre of each page, the most recognisable watermark style. Because the mark is drawn onto every page, it prints with the document and survives normal viewing and sharing.
Please note this is a visual mark, not security. Anyone with PDF editing tools could remove it, so do not rely on a watermark alone to protect highly sensitive files. Processing happens entirely in your browser; your PDF is never uploaded.
How to use
- Click the file box and choose the PDF you want to mark.
- Type your watermark text, such as CONFIDENTIAL or your company name.
- Adjust the font size and opacity sliders until the balance looks right for your document.
- Click Add Watermark and Download and wait for the stamped copy.
- Open the download and check a few pages to confirm the text is readable but not overpowering.
Frequently asked questions
Can the watermark be removed later?
Your original file is untouched, so you always keep a clean copy. On the watermarked copy, the text is drawn as page content; removing it would need PDF editing software and is not a one-click job for most readers.
What opacity should I choose?
Around 15 to 30 percent works well for most documents: clearly visible on screen and in print, yet light enough to read through comfortably. Use a higher value only for strong sample marking.
Does the watermark appear on every page?
Yes. The same text, size, angle, and opacity are applied to all pages, centred on each page so it also suits documents with mixed page sizes.
Is my document uploaded?
No. The watermark is added locally in your browser, and your file never leaves your device.