Certificate Checker
Analyze and extract signatures and certificates from executable files (.exe, .efi) or certificate files.
Drop file (.efi, .exe, .dll, .sys, .cer, .crt, .pem, .p7b) here or click
How does this tool work?
Analyze and extract digital signatures and X.509 certificates.
Upload a file (.exe, .efi, .cer, etc.). For PE executables, the embedded signature is located in the security directory and decoded to display issuer, validity, serial number, and fingerprints.
Where are my data processed?
Only in your browser. Your data is not sent to any server.
The tool calculates and converts with JavaScript right on your device. Input and files are not sent to us or anyone else. You can check this yourself: load the page, disconnect from the internet, and the tool keeps working in the open tab.
No Server UploadNo sign-upRuns Offline in Tab