Watermark PDF
Add text or a logo to PDF pages. Choose page ranges, position, opacity and diagonal placement, then preview the watermarked PDF.
Processed on your device · Text or logo · Selected pages
PDF up to 50 MB and 200 pages. A watermark is a visible label, not access protection. Editing a signed PDF can invalidate its signatures.
How to Use Watermark PDF
Choose and prepare
Choose a PDF and a text or logo watermark. Enter page numbers such as 1, 3-5 or leave blank for all pages. Set position and opacity, then create the result.
Review the result
Inspect the result and correct settings before downloading. Keep your original file.
About Watermark PDF
How it works
Add a visible draft, sample or ownership label to selected pages. The watermark follows the visible page orientation, including rotated pages. Latin text is supported directly; use an image for other scripts.
Supported files and practical limits
PDFs up to 50 MB and 200 pages. Password-protected or damaged documents may not open. Watermarks are not encryption or access control. Changes can invalidate existing digital signatures; keep the original signed file.
Common uses for Watermark PDF
- Labeling draft proposals
- Adding a logo to PDF handouts
Frequently Asked Questions
Do I need an account?
No. This tool is free to use without an account.
Are my files uploaded?
Processing happens in your browser. Your files are not uploaded to a conversion server.
What should I check before using the result?
PDFs up to 50 MB and 200 pages. Password-protected or damaged documents may not open. Watermarks are not encryption or access control. Changes can invalidate existing digital signatures; keep the original signed file.