Convert CRT To Base64 Online for Free


Note: offers online and free SSL certificate format conversion tool without needing any software installation or running the OpenSSL commands. If you would like to convert your CER file to other formats, check CRT Converter page.

Converting CRT to Base64 online is easy using tool

Just follow these steps:

What is CRT format?

The extension CRT is employed for certificates, with CER and CRT being almost interchangeable. This is especially prevalent in *nix systems. A file with a .crt extension encompasses an end-entity certificate, its public key, and identity details such as domain names verified to be linked with the certificate.

CRT certificates play a crucial role in enabling secure TLS handshakes, substantiating website identity ownership to browsers, and establishing encrypted sessions that are shielded against eavesdropping and content tampering.

What is Base64 format?

Base64 serves as the established industry standard for encoding SSL certificate content. It is widely adopted across various web servers, which not only generate certificate signing requests but also accept SSL certificates in the Base64 format. This encoding method allows binary data to be represented in ASCII text, ensuring compatibility and ease of transfer between different systems.

The size of the certificate content is a variable factor determined by the encryption strength of the certificate. Higher encryption strength certificates generally result in larger-sized content due to the complexity of the cryptographic keys and associated information. As a result, the Base64-encoded SSL certificates accommodate the diverse encryption requirements of different security protocols, ranging from standard to advanced levels of protection.

Moreover, the use of Base64 encoding is not limited to the SSL certificate itself; it extends to various cryptographic elements, including public and private keys, within the certificate. This uniform encoding approach enhances interoperability and simplifies the integration of SSL certificates across different platforms and services.

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