What Is CertViewer and What Does it Do?

CertViewer offers an intuitive and user-friendly interface that allows you to easily view X.509 certificates. This tool provides essential functionalities, including detailed information on certificate validity, issuer, and subject details, as well as the ability to inspect the certificate chain.

What is an X.509 Certificate?

The X.509 certificate, particularly in the form of TLS/SSL certificates, plays a crucial role in securing web traffic and authenticating websites. As a standardized format for public key certificates, X.509 certificates are essential for protocols such as TLS/SSL, which facilitate secure connections over the internet (enabling HTTPS). These certificates link an entity's identity, such as a website's hostname, to a public key, thereby ensuring secure and encrypted communication between users and web servers.

Simplifies Certificate Analyzation

Whether you're a developer needing to verify encryption protocols or an IT professional managing security certificates, CertViewer simplifies the process of accessing and analyzing your digital certificates efficiently.

Using CertViewer

When a certificate file is loaded into the application, users can access various key pieces of information, including the serial number, public key, validity periods, and fingerprint. This insight enhances the understanding of the certificate's authenticity. Additionally, users can view the associated subject name, as well as sections detailing certificate policies and CRL (Certificate Revocation List) distribution points.

It is recommended that you take a look at the developer's repository,, as it includes some tips to help get you started.

Geek Verdict: Handy Tool For Authenticity Verification

Utilizing CertViewer can significantly improve your ability to assess the authenticity of specific software or services. By verifying the certificate and examining its detailed attributes, you can gain confidence in the reliability of the applications you are using. However, it's important to note that a deeper comprehension of these specifics may require a higher level of computer knowledge than that possessed by the average user. The application's drag-and-drop functionality further enhances its accessibility, making it easier for users to add and explore certificates.