Download Latest Version CertViewer2.2.5.zip (308.5 kB)
Email in envelope

Get an email when there's a new version of X509 GUI Certificate Viewer

Home
Name Modified Size InfoDownloads / Week
Readme.txt 2025-03-23 1.1 kB
CertViewer2.2.5.zip 2025-03-23 308.5 kB
CertViewerSetup_v2.2.5.exe 2025-03-23 1.7 MB
CertViewer2.2.4.zip 2025-03-22 853.7 kB
CertViewerSetup_v2.2.4.exe 2025-03-22 1.7 MB
CertViewer2.2.3.zip 2025-03-19 3.5 MB
CertViewerSetup_v2.2.3.exe 2025-03-18 3.4 MB
CertViewer2.2.2.zip 2025-03-12 3.5 MB
CertViewerSetup_v2.2.2.exe 2025-03-12 3.4 MB
Totals: 9 Items   18.4 MB 9
Certviewer.zip is a portable application to show X509 certificates. No setup required just unzip then click to run it.
BUT on Windows all files .DLL and .EXE must be unlock (Properties->Unlock), also in the directory QuicProxy.

CertViewerSetup.exe is the installer version available for the current or all users (admin rights are required).

Run in WinForm and command line mode like "certviewer Certificate.crt"

This tool can navigate in the Cert chain if exist.

Certificate files can be Drop on the Form or you can paste a valide URL (https, smtp startTLS, wss, opc.tcp, quic ... not really standard that last one) using the popupMenu.

If QUIC is not required one can remove the directory QuicProxy (not supported on Linux with NetCore 7 & 8).

Runs on Linux in online mode without QUIC, in offline mode not all file formats are recognized. 

CA certificates from a private/enterprise/own PKI can be used : certificates files should be inserted into a Folder named PrivateCA on the user Desktop and/or next to the .EXE file (both are read).

Handshakes timeout can be adjusted in config.yaml.
Source: Readme.txt, updated 2025-03-23