Add Watermark to PDF
Add a custom text watermark, control opacity, rotation, size, and page range, then download the result.
Frequently asked questions
How does the Watermark PDF tool work?
Add transparent text across PDF pages. The operation runs from the tool workspace after you choose one PDF file.
Are files uploaded when I use Watermark PDF?
No. Processing is designed to run locally in your browser, so PrefillPDF does not receive or store the document used by this tool.
Will Watermark PDF overwrite my original file?
No. Your source remains unchanged. The tool creates a separate result for download.
What are the file limits for Watermark PDF?
You can use up to 1 file with a combined size of up to 100 MB per operation.
Can Watermark PDF open password-protected PDFs?
Encrypted PDFs may fail to open. Unlock the document first and then use the unlocked copy.
Does Watermark PDF reduce document quality?
The tool avoids intentional recompression when page content can be copied directly. Conversion tools render output at the configured quality.
Can Watermark PDF control opacity and rotation?
Yes. You can adjust the watermark text, opacity, size, angle, and page range.
Can I change watermark opacity?
Yes. Lower opacity creates a subtle mark, while higher opacity makes it more prominent.
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