Base64 Decoder

EncodeDecode

Base64 Input

0 chars

Decoded Result

0 chars

Waiting for input

Paste a Base64 string on the left. The decoded text appears here.

About Base64 decoding

  • Decodes Base64 to plain text
  • Ignores whitespace. Accepts URL-safe alphabets and missing padding
  • Strict UTF-8 check: binary data that is not valid text is rejected
  • Runs locally in your browser. Nothing is uploaded
Decode Base64 to plain text (UTF-8). Handles URL-safe alphabet and missing padding.