About this Tool
Base64 is a standard encoding mechanism used to convert plain text into an ASCII string format. This is incredibly useful for formatting basic authentication headers, embedding data in URLs, or ensuring data safely passes through text-based protocols like HTTP without corruption. Simply paste your text, and get the exact Base64 string instantly.
Frequently Asked Questions
Is Base64 encoding the same as encryption?
No. Base64 is an encoding scheme, not an encryption algorithm. It does not use a cryptographic key and can be easily decoded by anyone. Never use Base64 to secure or hide sensitive passwords.
What are the most common use cases for Base64 encoding?
Developers frequently use Base64 to encode API credentials for Basic Auth headers, embed small image data directly into HTML/CSS files, or safely transmit complex strings across systems that only support basic text.
Does encoding to Base64 increase the file size?
Yes. Because of how the encoding algorithm works, converting plain text or binary data to Base64 increases the overall size of the payload by approximately 33%.