← utilities

Base64 Encoder

Encode and decode in this tab. UTF-8 safe. Nothing uploaded.

Mode
Alphabet
Status

Paste or type to encode. Toggle Decode for Base64 → text.

Local file
Optional. Stays in this tab.

How to use it

  1. Pick Encode or Decode, then Standard or URL-safe.
  2. Paste text, or tap Choose file.
  3. Tap Encode or Decode. A bad input shows in the status line.
  4. Copy output, or Download bytes if you started from a file. Clear starts again.

Common uses

Check a token or a data string. Turn a small file into text for a test.

Privacy

Your text and files stay in this browser. Nothing is uploaded. Refresh and they're gone. We do not see them.