Example
Input:
https://www.starrytool.com
Click the encode button to output:
aHR0cHM6Ly93d3cuc3RhcnJ5dG9vbC5jb20=
About the Online Base64 Decode/Decode Converter
The Base64 encoding in this tool is a method of converting binary data into characters for transmission across systems that do not support binary data. During encoding, three bytes of binary data are converted into four Base64 characters.
Base64 decoding is the reverse process of Base64 encoding, converting Base64 characters back into the original binary data. This is typically done after the data has been transmitted to its destination, to restore the original binary data.
• Features
Text Form: The output of Base64 encoding is in text form, which can be safely transmitted in text environments like XML, JSON, or other contexts requiring plain text.
Size Increase: Base64 encoding increases the size of the data by about 33%, as it encodes three bytes of data into four Base64 characters.
Not Encryption: Base64 encoding is not a secure method of encryption; it can be easily decoded back to the original data. Therefore, it should not be used to protect sensitive information.
Readability: Although Base64 encoded data is considered text, it is not human-readable.
• Use Cases
Email Transmission: Base64 is widely used in email systems to convert non-text attachments (such as images and document files) into text format, enabling their transmission in text-only email systems.
Data URLs: In HTML and CSS, Base64 encoding is used to embed small binary objects like images and font files directly in the code as data URLs.
Basic Authentication: In HTTP Basic Authentication, usernames and passwords are encoded in Base64 before being sent to the server, reducing the risk of transmitting sensitive information in plain text.
WebSockets and Other Binary Protocols: In cases where binary data needs to be transmitted over a text protocol like WebSockets, Base64 encoding provides a mechanism.