FastTextTools

Base64 Encoder/Decoder

Encode text to Base64 or decode Base64 strings back to plain text. Supports full UTF-8 character encoding.

How to Use

  1. 1Select Encode mode to convert plain text into Base64, or Decode mode to convert Base64 back to text.
  2. 2Type or paste your content into the input textarea on the left.
  3. 3The encoded or decoded result will appear instantly in the output textarea on the right.
  4. 4If the input is not valid Base64 while in Decode mode, a red error banner will explain the issue.
  5. 5Use the Copy button to copy the output to your clipboard, or Clear to reset both fields.