Extract text from Security certificates (CRT)
To convert CRT Certificates to another format, you need OpenSSL or other Web software.
To convert other file formats to the "Digital Security Certificate" file type, you need software like OpenSSL or a similar tool.
A .CRT file stores an X.509 digital security certificate. It is predominantly used by web servers to establish secure SSL/TLS connections, verifying the identity of a website and enabling encrypted data transfer between a browser and a server.
You can view and manage these files using command-line utilities like OpenSSL or built-in OS tools like the Microsoft Management Console (MMC). They contain the public key and server identity details.
Working with .CRT files can be frustrating due to encoding mismatches and rigid platform requirements. A .CRT file usually contains Base64 ASCII text, but some applications demand binary encoding. Furthermore, a standalone .CRT only holds the public key. If you need to migrate an SSL certificate to a Windows IIS server, the .CRT format will not work directly; you must combine it with your private key into a single container.
To resolve compatibility issues, you must convert the file. For broad compatibility across Unix/Linux servers, convert to PEM. For Windows IIS, convert to PFX or P12 (which packages the certificate and private key together). For legacy systems or Java keystores requiring strict binary formats, convert to DER. Drop your file here to view and convert it securely right in your browser.
Convert.Guru analyzes your CRT file, detects the exact format, and lets you read the text inside.
Users also converted KEY, CER, CA-BUNDLE, PEM, CERT, PDF, CTR, P7B, CDR, CR2, ZIP, CSR and SRT files.
If you want to convert CRT file to PEM, PFX, CER, JKS, P12, DER, HTML, HTM, CSS, JS, PHP or ASP, you can use OpenSSL or similar software from the "SSL/TLS Security Certificate" category. In the File menu, look for Save As… or Export….
To convert RSS, CSS, CGI, SITEMAP, PL, WEBMANIFEST, JSON, JS, XML, HTML, ICO or HTM files to CRT, try OpenSSL or another comparable tool in the "SSL/TLS Security Certificate" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our CRT converter.