Base64 encoding converts binary or text data into a set of 64 ASCII characters. It is commonly used for embedding images in HTML/CSS, encoding credentials in HTTP Basic Auth, transmitting data in JSON APIs, and attaching files in email (MIME).
Enter your text to encode it to Base64, or paste Base64-encoded text to decode it back to its original form. The tool supports UTF-8 characters so it handles non-ASCII text like emojis and international characters correctly.
Yes. All encoding and decoding is performed client-side in your browser using JavaScript. Your text data never leaves your device — nothing is uploaded to any server.