Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 to plaintext. Supports standard and URL-safe Base64 variants.
Frequently Asked Questions
What is Base64?▾
Base64 is an encoding scheme that converts binary data into ASCII text using 64 printable characters. It's commonly used for embedding images in HTML/CSS, encoding JWT tokens, and transmitting binary data over text channels.
What is URL-safe Base64?▾
URL-safe Base64 replaces '+' with '-' and '/' with '_', and omits padding '=' characters. This is used in JWT tokens and URLs where standard Base64 special characters would need escaping.
Is my data safe?▾
Yes. All encoding/decoding happens in your browser. No data is sent to any server.