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Decode Base64 text

Decode a Base64 string to readable text directly in your browser.

Processed on your device. Nothing is sent to any server.

Decode a Base64 string to readable text directly in your browser, with full UTF-8 support.

Decodes the Base64 string to bytes and interprets them as UTF-8 text, showing a clear error if the string isn't valid Base64.

Use cases

  • Reading the content of a basic authentication header.
  • Decoding a Base64 value found in a JSON or log.
  • Checking the content of encoded data while debugging.

How it works

  1. 1

    Paste the Base64 string

    Type or paste the encoded text.

  2. 2

    Decode it

    Click Decode and copy the resulting text.

Frequently asked questions

What happens if the text isn't valid Base64?
An error message is shown stating the format isn't recognized, instead of an incorrect result.
Developer