Add Watermark to PDF

Distributing confidential reports, contracts, or proposals without protection means anyone can claim authorship, re-distribute freely, or strip your branding. A simple footer is not enough — it can be deleted in seconds.

Apply a permanent diagonal text watermark across every page of every PDF in your batch. The watermark is embedded directly into the PDF content stream — it cannot be removed without destroying the document.

• 1Type your watermark text (e.g. "CONFIDENTIAL" or your company name).
• 2Set opacity and font size to your preference.
• 3Upload your batch of PDFs.
• 4The engine calculates perfect diagonal positioning across every page.
• 5Download the watermarked files, preserving your folder structure.