Base64 Encode Decode
RFC 4648Live two-way base64 encode decode tool. A complete base64 converter with full UTF-8 support for emojis and international characters.
What is Base64 encoding and why is it used under RFC 4648?
This tool operates as a versatile base64 encode decode and base64 converter. Base64 is a standardization for encoding binary data into ASCII characters, defined in RFC 4648. It translates streams of bytes into a 64-character subset (A-Z, a-z, 0-9, +, /) along with equals padding. This allows data to travel safely through legacy protocols that cannot handle raw binary bytes without corrupting the content.
How does this two-way Base64 converter handle UTF-8 text?
Standard browser atob and btoa functions only parse binary characters (latin1), failing on UTF-8 multi-byte characters such as emojis or international scripts. Our base64 converter leverages URL encoding wrappers to serialize multi-byte characters into URI escape sequences before encoding, guaranteeing correct UTF-8 string serialization in both directions.
Is my data secure when converting text to Base64?
Security is fully managed on your local computer. This utility performs all byte formatting and translation inside your web browser. No network sockets are opened, and no data leaves your machine. Your private strings remain private.
Frequently Asked Questions
What is base64 encode decode used for?
Base64 encode decode schemes format binary data into ASCII characters for transmission across text-only protocols like email or JSON.
Is Base64 encryption or just encoding?
Base64 is just an encoding scheme, not a form of encryption. It does not secure or hide data, as anyone can easily reverse the process (decode it) back to the original text. It is designed solely for data formatting and transmission compatibility, not confidentiality.