“Hello 👋” encodes to 5L2g5aW9IPCfkYs=。
Base64 Encoder / Decoder
Convert UTF-8 text, URL-safe Base64, and files locally
All input is processed in this browser and is never sent to a server or written to local storage.
Waiting for input.
Text uses UTF-8. Files are limited to 20 MiB.
64
Usage and safety notes
Replaces +、/ with -、_ and removes trailing padding.
Base64 is only an encoding. Encrypt sensitive content and share it only in trusted environments.