PDF Watermark & Page Number Tool
Add customizable text watermarks, confidential stamps, and page numbers to PDF documents online. 100% free, private, and runs in your browser.
Drag & drop a PDF document here, or
Runs 100% locally • Your file is never uploaded to any serverLive Preview (Page 1 of 3)
About this tool
How to use it
- Upload a PDF file using the drag-and-drop zone, or click "Load Sample PDF" to test the tool with a mock document.
- Enable text watermarks to add diagonal stamps such as CONFIDENTIAL, DRAFT, COPY, PAID, or custom text.
- Adjust watermark rotation angle, text scale, and opacity slider.
- Enable page numbering to stamp page counts (e.g. "Page X of Y", "X / Y", "- X -") at your chosen position.
- Review the live canvas preview across pages, then click "Apply & Download Stamped PDF".
Why it matters
['100% private client-side processing: Your sensitive legal documents, contracts, and financial PDFs never leave your browser.', 'Customizable corporate stamps: Choose from standard enterprise presets or input customized project classifications.', 'Flexible numbering placements: Place page counts at bottom-center, bottom-right, or headers with cover page skipping.', 'Zero installation: Operates directly within any modern web browser without third-party printer drivers or desktop software.']
When to use it
['Contract drafting: Mark preliminary agreements with diagonal "DRAFT" or "CONFIDENTIAL" overlays.', 'Accounts & invoicing: Stamp paid vendor bills with a distinct "PAID" or "COPY" verification banner.', 'Academic papers & reports: Add sequential "Page X of Y" pagination to unnumbered thesis and case study submissions.', 'Real estate & legal filings: Protect distributed pitch books and confidential disclosures with persistent identity stamps.']
Common questions
Are my PDF files uploaded to an external server?
No. The entire PDF parsing, canvas previewing, and document generation pipeline executes 100% locally inside your browser session using web standards.
Can I skip numbering the title or cover page?
Yes. Check the "Skip first page (cover page)" box to start sequential page numbering from page 2 onwards.
What watermark angles are available?
You can select -45° diagonal (bottom-left to top-right), +45° diagonal, or 0° horizontal alignment.
Will watermarking degrade the quality of my original PDF pages?
No. Stamps and page numbers are appended cleanly as vector text streams, maintaining the crisp resolution of your document's original fonts and imagery.