Plain Local Cryptographic Signer
Add a visual signature and a locally verifiable cryptographic signature envelope to your PDF without uploading files.
Plain Local Signer produces locally verifiable cryptographic signatures. It does not currently meet the requirements for qualified electronic signatures under eIDAS, ESIGN Act, or equivalent regulations. For legally binding e-signatures, consult a qualified trust service provider.
Drop a PDF here, or click to browse
Signing and key generation happen fully local in your browser.
Signature Creation
Upload a PDF and add your signature.
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Touch and mouse drawing are supported.
Signature Placement
Click the page preview to place your signature, then drag or resize it.