Watermark PDF
Add a text watermark to PDF online free.
Drop your PDF here
or click to browse — one PDF, up to 100 MB
or click to browse — one PDF, up to 100 MB
Live preview — first page
Done! Your watermarked PDF is ready.
Download watermarked PDF
How to use this tool
1
Upload your PDF
Drag & drop or browse. Your file never leaves your device.
2
Design the watermark
Type your text, pick size, color, opacity and position — see it live on page one.
3
Download
Apply the watermark to every page and download your stamped PDF.
Frequently asked questions
Will the watermark lower my PDF's quality?
No. The watermark is drawn as new text on top of each page — your original content is untouched.
Can I remove a watermark later?
This tool only adds watermarks. Removing one requires the original unwatermarked file.
Is my PDF uploaded anywhere?
No. Everything happens in your browser with pdf-lib. Your file never leaves your device.
Which pages get the watermark?
Every page of the PDF gets the same watermark in the position you choose.
What if my PDF is password-protected?
Password-protected PDFs can't be opened in the browser tool — remove the password first, then watermark.