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Number & Stamp PDF
Add page numbers, headers, footers, or a custom stamp to every page of a PDF privately in your browser.
Drag & drop your PDF here
or click to browse
How to Add Numbers and Stamps to a PDF
01
Upload a PDF
Choose the document you want to mark up.
02
Customize the Stamp
Choose a position, label, size, opacity, and optional custom text.
03
Create & Download
Generate a new stamped PDF while leaving your original untouched.
Simple Browser-Based PDF Stamping
pdf-lib writes text directly into each page of a new in-memory PDF, including page counts and custom labels.
The entire operation runs locally. Your documents are never sent to a server or third-party storage.
Frequently Asked Questions
Can I add only custom text?
Yes. Turn off page numbers and enter custom text to create a standalone stamp.
Can I choose where the text appears?
Yes. Place it in any top or bottom corner, or center it on the page.
Will my original PDF change?
No. The tool creates a separate stamped copy and leaves your source file unchanged.
Are files uploaded?
No. Numbering and stamping happen entirely inside your browser.
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