Add Watermark to PDF
Use Add Watermark to PDF, review the result, and keep the original until the output is checked.
Watermark Options
How to use Add Watermark to PDF
- Load your PDFs, then choose Watermark Type: Text or an Image supplied through the separate image picker.
- For text, set the wording (WATERMARK by default), the font family, colour, Size, Rotation and Opacity sliders.
- Narrow the scope with Apply to All Pages, or switch it off and type a range such as 1-3, 5, 7-10, or limit it to odd or even pages.
- Press Preview Watermark to see it on the rendered page, then Add Watermark and Download <name>_watermarked.pdf.
What Add Watermark to PDF actually does to your file
The watermark is drawn on top of each page as text or an image, so the words underneath stay selectable and searchable, and opacity is applied for real rather than faked with a pale colour. This is the one PDF page that understands a typed page range with commas and dashes. Image watermarks must be PNG or JPEG - other formats are refused while embedding. Bold and Italic switch the font to a Helvetica variant, so the family you picked is overridden, and the two decorative symbol fonts map ordinary letters to glyphs. Preview is drawn in the browser and is not what gets downloaded.
Add Watermark to PDF FAQ
What does Add Watermark to PDF do?
Our free online PDF watermarking tool allows you to easily add text or image watermarks to your PDF files. Fast, easy, and accessible from any device with no sign-up required!
Which files work with Add Watermark to PDF?
This category commonly supports PDF and exported JPG or PNG pages. Use the accepted file types shown in the uploader, because support varies by browser and by the engine behind each tool.
Can I remove a watermark from a file?
Only if you own the source or have permission to edit it. Removal tools patch the pixels around the mark and cannot restore what was covered, so keep the unwatermarked original.
Will my original file be changed?
No. The work is done on a copy in this tab by pdf.js and pdf-lib, and the result arrives as a separate download, so your original is still there if you need it.
How is my file processed?
It is not uploaded. The processing is done locally by pdf.js and pdf-lib, so the practical ceiling is your device's memory and the limit shown beside the uploader - no queue, no account, no copy on a server.
Is the ADD Watermark PDF free?
Yes. The ADD Watermark PDF is free with no trial limit, subscription, or watermark on downloads. You can use it for personal and commercial projects without creating an account.