Certificate Inspector

Upload a signed Windows or macOS/iOS binary, or paste a raw certificate. We'll extract the full chain and explain every field in plain English. PE and Mach-O files are processed entirely in your browser — only the embedded signature (a few KB) is sent to the server, so even large binaries upload instantly.

Drop file here or click to browse
Supported: .exe, .dll, .sys, .msi, .appx, .msix, .dylib, .p7x, .pem, .crt, .cer, .der, .p7b
You can paste a full chain (multiple PEM blocks).
What you'll see
Chain visualization
Interactive tree from root → leaf
All certificate fields
Subject, EKU, AKI, CDP and more
Plain-English glossary
Hover any field for an explanation