Foxit Reader is a popular alternative to Adobe Acrobat — lighter, faster, and often the default PDF reader on many Windows and enterprise installations. But if you're opening an Indian government PDF (Aadhaar, PAN, income tax documents, DigiLocker certificates) in Foxit, you've likely encountered an error like "Signature Not Valid" or "At least one signature is invalid." This is a trust configuration issue, not a document problem.
Foxit Reader supports two trust modes for digital signatures. It can use its own built-in trust list, or it can delegate to the Windows Certificate Store (the same repository that Microsoft Edge and Chrome use). By default, Foxit uses its own list, which — like Adobe's AATL — does not include Indian government Certificate Authorities such as NIC or CCA India. The result: any PDF signed by these authorities shows as "not valid" even when the signature is perfectly genuine.
Foxit's manual fix involves navigating to File → Preferences → Trust Manager → Windows Certificate Store and enabling it, then separately importing the NIC/CCA root certificate into Windows' Trusted Root Certification Authorities store via the Certificate Management Console (certmgr.msc). This requires administrator privileges on your computer, a correct understanding of certificate formats, and the right certificate files downloaded from India PKI. Even after doing this correctly, the fix only applies to your machine — the PDF will still show warnings on any other device.
Additionally, Foxit's signature panel behaviour varies between versions — some older Foxit versions don't even surface the Windows Certificate Store option, making the manual fix unavailable entirely.
Rather than configuring Foxit (or any reader), VerifySign.in verifies your PDF server-side and returns it with embedded LTV data. This means the verification result is baked into the PDF itself — not dependent on any reader's trust settings. Open the VerifySign.in-processed PDF in Foxit, Adobe, Chrome's built-in viewer, or any other reader: the signature displays correctly.
This approach has a key advantage: the verified PDF can be shared with anyone — a bank, an employer, a government department — and they'll see the valid signature too, without needing to configure anything on their end.
Step 1 — Open your browser and go to verifysign.in. No login or account needed.
Step 2 — Drag your government PDF into the upload zone, or click to browse and select the file.
Step 3 — VerifySign.in verifies the signature cryptographically against its trusted certificate store, which includes all major Indian government CAs.
Step 4 — Download the processed PDF. Open it in Foxit Reader — the signature panel now shows the correct, valid status including signer details and signing time.
Step 5 — Share the verified PDF with confidence. The LTV data means it will display correctly in Foxit, Adobe, and any other PDF reader — on any machine, with no configuration required.
VerifySign.in supports any digitally signed PDF from Indian government authorities, including: Aadhaar card (UIDAI), PAN card letters (NSDL/UTIITSL), Income Tax Returns (ITR-V acknowledgements), DigiLocker-issued documents (degrees, marksheets, driving licences), GST registration certificates, EPFO/UAN documents, and more. If it's a signed government PDF, VerifySign.in can verify it.
Instant digital signature verification for any government PDF — free, secure, no software needed.
Go to VerifySign.in →