Base64 Encoder - Convert Text to Base64

Base64 encoding is used to convert binary data into ASCII text format for safe transmission through text-only channels. Common uses include email attachments, data URLs for embedding images, API data transfer, and HTTP Basic Authentication.

No, Base64 is not encryption. It is a reversible encoding scheme that anyone can decode instantly. It provides no security - use proper encryption (AES, RSA) for protecting sensitive data.

Base64 increases data size by approximately 33% because it converts every 3 bytes of input into 4 characters of output. This overhead is the cost of ensuring safe text-based transmission.

Yes, this encoder properly handles UTF-8 text including international characters, accented letters, and emojis. The text is converted to UTF-8 bytes before encoding.

The equals sign (=) is used for padding when the input data length is not divisible by 3. It ensures the output is always a multiple of 4 characters, which is required by the Base64 standard.

No, all encoding happens directly in your browser using JavaScript. Your text never leaves your device, ensuring complete privacy.