🏷️ PDF Watermark Stamp Add
Add custom text watermarks or stamps to all pages of a PDF document online 100% client-side using pdf-lib. Private, fast, and completely free.
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Select or Drag & Drop a PDF File
Processed 100% locally in your browser. Complete privacy assured.
❓ Frequently Asked Questions
Are my confidential PDF documents uploaded to external servers?
No. All PDF page parsing, vector text overlay, rotation transformations, and file generation execute 100% locally inside your web browser using pdf-lib.
Can I customize the watermark text, font size, angle, and opacity?
Yes! You can specify custom watermark text, adjust font size, change text rotation angle (e.g., -45° diagonal), pick custom colors, and set opacity for subtle watermarking.
Is the watermark added to every page of the PDF?
Yes, the tool automatically iterates through every page of your imported PDF and applies the exact watermark configuration to all pages.
