A few weeks ago I got a signed contract PDF from someone.

It had a little stamp in the corner: "Digitally Signed by Rahul Sharma, Date: 2026-06-01."

I had absolutely no idea if that signature was real.

Not because I'm not technical — I am. But because there was genuinely no easy way to check. Adobe Reader gave me a partial result. Online tools asked me to upload my document to some random server. Government portals were confusing. And most people I spoke to didn't even know the difference between a scanned signature and a legally valid digital signature.

So I built SigVerify — a tool that actually tells you whether an Aadhaar eSign or DSC-signed PDF is cryptographically valid.