Private by design. Heavy tools (OCR) may take a minute on large files.
How it works
Watermarking is local.
1
Enter text
Use short marks like CONFIDENTIAL or DRAFT.
2
Download
Watermark is drawn with pdf-lib on each page.
When you’d use this
Stamp text across every page — A colleague sent a multi-part PDF and you only need a subset for a meeting pack. A portal rejects the file shape and you must fix it without desktop Acrobat.
FAQ
About watermark pdf free
Image watermark?
Use Image Watermark for PNG/JPG overlays.
What is Watermark PDF for?
Stamp text across every page. It runs in your browser on SortMyFile so you can finish the job without an upload converter.
Does Watermark PDF upload files to SortMyFile?
No. Watermark PDF processes locally in the tab. We do not operate an upload API for this tool.
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