.CRL File Info & Viewer

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.CRL files online

Need to inspect a Certificate Revocation List? Open and view your .CRL files online instantly for free.

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Certificate Revocation Lists & more
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Extension
.CRL
Category
System
Primary Use
Certificate Revocation Management
Primary Software

OpenSSL

What is a CRL file?

A .CRL file is a Certificate Revocation List. This file is a key part of the X.509 Public Key Infrastructure. Certificate Authorities use .CRL files to publish a list of digital certificates that they have canceled before their expiration dates. Systems read these files to block untrusted connections.

How to open CRL files?

Operating systems like Microsoft Windows and Apple macOS have built-in certificate managers that can open .CRL files. You can also inspect them using command-line tools. The OpenSSL toolkit allows you to read a .CRL file using the command `openssl crl -in file.crl -text -noout`. Network administrators also use software from certificate authorities like GoDaddy to manage these files.

Inspecting with viewer.online

Often, you need a fast way to verify the contents of a revocation list. viewer.online/crl analyzes .CRL files to identify their exact format and creator software. It shows which programs can open the file and usually previews it directly in your browser. If a .CRL file has multiple possible meanings or uses a different data structure, viewer.online/crl helps identify the actual format of your file.

Summary

Because .CRL files use the known certificate?? format, viewer.online/crl can safely open and display them online, eliminating compatibility problems.

Frequently Asked Questions

What does a .CRL file do?

A .CRL file tells a system which digital certificates are no longer safe to trust. It lists revoked certificates by their specific serial numbers.

Can I read a .CRL file as plain text?

Usually, you cannot. A .CRL file typically uses binary encoding. You need a tool like OpenSSL or a dedicated viewer to translate it into readable text.

Is it safe to open a .CRL file?

Yes. A .CRL file is a simple list of data. It does not execute software code. However, you should only install or trust certificates from reliable sources.

How do I view the contents on Windows?

You can double-click the .CRL file. The built-in Windows Certificate Manager will open it and display the list of revoked certificates.

Why is my browser rejecting a website certificate?

Your browser might have checked a .CRL file that lists the website's certificate as revoked. This happens if the certificate is compromised or replaced by the owner.

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