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Verify DigiLocker Document Signature Online — Free & Instant

DigiLocker is India's official cloud-based document wallet, operated by the Ministry of Electronics and Information Technology (MeitY). It allows citizens to store and share government-issued documents digitally — eliminating the need for physical copies in most official situations. Every document issued through DigiLocker carries a digital signature that makes it legally equivalent to the original. Yet when you download a DigiLocker PDF and open it on your computer, you'll almost always see: "Signature Validity Unknown."

How DigiLocker Signs Documents

All DigiLocker-issued PDFs are digitally signed by the National Informatics Centre (NIC), the technology backbone of the Indian government. NIC acts as a Certifying Authority (CA) under India's IT Act, 2000, and issues the certificates used to sign DigiLocker documents. The NIC signing certificate is part of India's national PKI infrastructure, rooted at the Controller of Certifying Authorities (CCA).

When a document is fetched from an issuing authority (like CBSE, NSDL, or the transport department) and placed in DigiLocker, NIC applies its digital signature at the moment of issuance. This signature locks the document content — any change after signing would immediately invalidate it.

Why DigiLocker Signatures Show 'Validity Unknown'

NIC's certificate chain is not included in the default trust stores of global PDF viewers — Adobe Acrobat's AATL, Apple's trust store, or Microsoft's certificate store. This is a gap between India's national PKI and the global PKI ecosystem. Your DigiLocker document is authentic and legally valid. The warning is simply your PDF viewer saying: "I don't recognise the authority that signed this." VerifySign.in does recognise it — and can prove it.

DigiLocker Document Types Supported

VerifySign.in verifies NIC-signed DigiLocker PDFs for all major document categories:

• Aadhaar Card — issued by UIDAI via DigiLocker
• PAN Card — issued by NSDL/UTI-ITSL via DigiLocker
• Academic Marksheets & Certificates — CBSE, state boards, universities
• Driving Licence — issued by Parivahan/VAHAN via DigiLocker
• Vehicle Registration Certificate (RC) — from Parivahan
• Insurance Policy Documents — from IRDAI-registered insurers
• Birth & Caste Certificates — from state government portals
• Employment Documents — EPF, ESIC documents

How VerifySign.in Verifies NIC-Signed Documents

VerifySign.in maintains the complete NIC certificate chain — from the CCA India root through the NIC sub-CA to the document signing leaf certificate. When you upload a DigiLocker PDF, VerifySign.in:

1. Extracts the embedded NIC digital signature from the PDF.
2. Verifies the signature against the known NIC certificate chain.
3. Checks the document hash to confirm nothing has been changed since signing.
4. Displays the signer (NIC), signing timestamp, and issuing authority badge.
5. Embeds Long-Term Validation (LTV) data into a new PDF copy so it shows a green tick everywhere.

Step-by-Step: Verify Your DigiLocker Document

1. Open the DigiLocker app or website (digilocker.gov.in) and download the PDF of your document.
2. Go to verifysign.in.
3. Upload your downloaded DigiLocker PDF.
4. VerifySign.in detects the NIC signature and verifies it within seconds.
5. Review the result — document type, signer name, date, and integrity status.
6. Download the verified PDF with LTV data for sharing.

The verified PDF will display a green tick on any device or system — no certificate installation required on the receiving end. This makes it ideal for sharing with banks, employers, colleges, or government offices where the recipient may not be familiar with Indian government PKI.