Encode or decode text
- Choose standard Base64 or Base64URL.
- Use Encode text for UTF-8 input or Decode to text for encoded input.
- Review, copy, swap, or download the exact result.
Base64 Encoder and Decoder
Encode UTF-8 text as Base64 or strictly decode Base64 and Base64URL back to text.
Input and results stay in browser memory in this tab. Nothing is uploaded, logged, saved, or added to the URL.
Enter text and choose an action.
Convert text with the standard Base64 alphabet or the URL-safe Base64URL alphabet. Base64 changes representation; it is not encryption and provides no confidentiality.
How OpenFileTools processes it
Local processing, explicit choices.
Text is converted to UTF-8 bytes, transformed with a strict Base64 helper, and retained only in this tab.
Questions, answered.
Is Base64 encryption?
No. Anyone can decode Base64; it is an encoding format.
How is Base64URL different?
It replaces characters that conflict with URLs and commonly omits padding.