Base64 Encode / Decode
Encode or decode text in your browser, without sending it anywhere.
Runs on your device · No input uploadsResult
LOCALEnter your values, then choose Convert.
How this tool works
Encodes UTF-8 text and decodes Base64 back to UTF-8. URL-safe mode uses - and _ and omits padding when encoding. Invalid padding, non-canonical bits and invalid UTF-8 are reported. This is not encryption.