Add Watermark to PDF (text or image, all or chosen pages)
Add a text or image watermark to all or chosen pages of a PDF. Pick the position, angle, opacity or a tiled pattern; text in any language works. Everything runs in your browser.
- Runs in your browser (no upload)
Up to 150 MB per file
Up to 200 characters and 5 lines. Any language works (the text is drawn with your device fonts and embedded as an image).
Positive values tilt counterclockwise (45° runs from bottom left to top right).
Lower values are fainter and keep the text underneath readable.
How to use
- Choose or drag and drop the PDF to watermark.
- Pick text (e.g. CONFIDENTIAL) or an image, then set the position, angle, opacity and the pages to watermark.
- Press "Add watermark", check the verification and preview, and download.
FAQ
Can I use non-Latin text?
Yes. The text is drawn with your device fonts and embedded as an image, so Japanese, Chinese, Vietnamese and other scripts work.
Does a watermark stop editing or copying?
No. It is only drawn on top of the page and may be removable with PDF editors. Use it as a visible label such as "Confidential".
Is my file uploaded?
No. Reading the PDF, drawing the watermark and saving all happen in your browser.
Notes & limitations
- What you enter is processed only on this page and is not sent to YUCTS servers.
- Password-protected PDFs are not supported.
- Text watermarks are embedded as images, so they cannot be searched or selected; letter shapes depend on your device fonts.
- Watermarks may be removable with PDF editors and do not protect against editing or copying.
- Image watermarks support PNG and JPEG.
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