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Select a single file
Files are read locally — never uploaded
Signature image (PNG with transparency recommended)
Add a file to enable processing.
This tool runs entirely in your browser. Your file is read into this tab, processed on your device, and never uploaded to PDFDig or any third party. Closing the tab clears it from memory.
Frequently asked
Is my signature uploaded anywhere?+
No. Both the PDF and the signature image are read and combined locally; nothing is transmitted.