Base64 Encoder & Decoder - Encode Decode Online
Encode and decode Base64 strings online. Support UTF-8, URL-safe mode. Free and processed locally in your browser.
Free Online Base64 Encoder & Decoder
Encode text to Base64 or decode Base64 back to text. Supports UTF-8 (including Chinese characters) and URL-safe Base64URL variant. All processing happens locally in your browser.
What is Base64?
Base64 is an encoding scheme that represents binary data using 64 printable ASCII characters. It's commonly used in data URLs, email attachments (MIME), JSON Web Tokens, and API authentication headers.