Sign a PDF with a real digital signature using your DSC certificate file (.pfx or .p12). The signature is made on your computer, and anyone who opens the PDF can check who signed it and that nothing was changed afterwards. No certificate? Make a personal one in seconds.

When to use Sign with digital certificate

• Sign invoices, agreements and letters with your Class 3 DSC
• Send a PDF that shows clearly if anyone edits it later
• Add a visible stamp with your name, date, reason and place

How to use Sign with digital certificate

1. Select the PDF.
2. Add your .pfx or .p12 certificate and type its password, or make a personal certificate.
3. Choose where the stamp goes and click Sign PDF.

Tips

• DSC tokens (USB) from eMudhra, Capricorn or Sify can export a .pfx only if the certificate was issued as exportable. If yours cannot, use the signing software that came with the token.
• Check the result with Verify PDF signature, or open it in Adobe Reader and look at the Signature panel.

Questions about Sign with digital certificate

Is my file uploaded?

No. Everything happens inside your browser, on your phone or computer. Nothing is sent to our servers.

Does my certificate or password leave my computer?

No. The certificate is opened and used in your browser, and the password is never sent anywhere.

Will Adobe show a green tick?

For a certificate from a licensed Indian certifying authority, Adobe shows the signer once the CCA root is trusted on that computer. A personal certificate shows "validity unknown" until the reader trusts it.

Is this the same as Aadhaar eSign?

No. Aadhaar eSign needs an online OTP service. This tool uses a certificate file that you already have.

Is it safe?

Yes. Sign with digital certificate works inside your browser. Your files are not uploaded anywhere, so nobody else can see them, and there are no waiting queues.

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