Add a Watermark to PDF
Add a text watermark to up to 100 PDFs. Preview a page, adjust the text and download your files without uploading them.
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How to use Add a Watermark to PDF
- Choose one or more PDFs, up to 100 files.
- Enter your watermark text and check the preview.
- Apply the watermark and download a PDF or a batch ZIP.
What this tool does
The watermark is added over the existing page contents. Its size adapts to each page. Diagonal or centered placement, opacity and color apply to the selected page range in every PDF. This version adds text only, not image logos. A watermark is not encryption or a restriction on copying.
File limits and important documents
Use up to 100 PDFs, 25 MB each and 60 MB total. Batch output is limited to 200 MB. Password-protected PDFs and interactive forms are not supported. Use an unsigned copy: editing a PDF can invalidate digital signatures. Your original files are unchanged. On smaller devices, use fewer or smaller files.
Are my files uploaded?
No. File processing and previews run in this browser. Reset clears your selection and generated download links.