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Check digital signatures in a PDF — valid, edited after signing, expired, who signed
இப்போதே திற · Open →Upload a signed PDF such as Form 16, a TRACES certificate, a GST or e-filing document, or an Aadhaar e-Sign PDF. The tool reads the signature inside the file and tells you in plain language whether the signature is intact, whether the content was changed after signing, who signed it, when the certificate is valid and which CA issued it. The file stays on your device. DSC / e-Sign Verifier is part of PDF Tools India's PDF toolkit. Check digital signatures in a PDF — valid, edited after signing, expired, who signed. Runs entirely in your browser — your file is never uploaded to a server. Available in Tamil and English, on both mobile and desktop, with no account required to try it.
🔒 Runs entirely in your browser — your file is never uploaded to a server.
No. The check runs inside your browser and the file never leaves your device.
It means the signature is mathematically intact and the signed content is unchanged. Certificate revocation (OCSP/CRL) and the official trust list cannot be checked offline, so for an official verdict also open the file in Adobe Acrobat Reader.
No. A browser cannot access a USB token by itself; signing needs your token driver and your CA signer utility. See DSC Token Help for fixes.
Any edit, compression, merge, rotate, print-to-PDF or re-save after signing breaks a digital signature. Make all changes first and sign last.
Yes. DSC / e-Sign Verifier is free on PDF Tools India — no signup, no watermark and no daily limit.
Yes. DSC / e-Sign Verifier runs inside your own browser, so your files and text never leave your device.
Yes. DSC / e-Sign Verifier works on Android phones, iPhones, tablets and desktop browsers. The interface is available in Tamil and English.
Check digital signatures in a PDF — valid, edited after signing, expired, who signed.