Add Stamp to PDF
Add text or image stamps to PDF documents.
Drag & drop files here, or click to select
Stamp Settings
Preview:
Controls the font size of your stamp text
How to Add Stamp to PDF Files Online
Select the PDF document from your device.
Choose the stamp type (Text or Image).
Enter your custom stamp text or select an image to upload.
Customize page range, coordinates, size, opacity, and rotation angle.
Click the Add Stamp button to apply and download.
Why Use SonuPDF to Stamp PDFs?
In-Browser Stamp Processing
Place text or image overlays directly in the browser container. Your files are never uploaded to a cloud server.
Flexible Position Controls
Set custom margins, rotation degree angle, scale width/height, and opacity levels to place the stamp precisely.
Custom Text Styling
Adjust font style, size, color, and stroke parameters for text stamps like 'APPROVED' or 'CONFIDENTIAL'.
Multi-page Application
Apply the stamp to the entire document or specify a set of target pages.
Frequently Asked Questions
Yes, stamp application runs locally in browser storage. No server uploads occur, keeping your data confidential.
Yes, you can choose the Image Stamp option and upload PNG, JPG, or WebP files as custom stamps.
You can set the rotation angle input (e.g., 45 degrees) to orient the stamp diagonally.
Yes, you can use the Page Range option to specify page '1' or any selection of pages.