AccDox: PDF Watermark

Add a text watermark to all or selected pages — no server upload

Drop a PDF file here or click to choose

Your file is processed entirely locally in your browser — never uploaded to a server. (Max 20 MB.)

AccDox Watermark lets you stamp PDF documents right in your browser — fast, free, and completely secure for your files.

Need to merge several PDF files into one?

Try PDF Merge →

Need to split a PDF into pages?

Try PDF Split →

Want to turn photos into a PDF?

Try Image to PDF →

Frequently Asked Questions (FAQ)

No. The entire process — reading the PDF, adding the watermark, and generating the new file — happens locally in your browser using the pdf-lib JavaScript library.

Yes, choose the "Page range" option and set a start and end page.

You can pick any color with the color picker and adjust opacity from 5% to 100%.

Yes, the maximum file size is 20 MB.

The watermark text repeats at regular intervals across the whole page — useful for protecting image-heavy content from copying.

Yes, after processing a "Download PDF" button appears that saves the finished file to your device.

The tool uses the standard Helvetica font from pdf-lib, which covers Latin characters. For Cyrillic, we recommend using Latin transliteration instead.