How to decode Base64 to text

1. Paste the Base64 string

   Drop the encoded payload into the "Base64" field. A `data:…;base64,` prefix is stripped automatically; whitespace is OK.

2. Standard alphabet only

   The tool uses Node's `Buffer.from(.., 'base64')`, which expects the standard A–Z a–z 0–9 + / = alphabet. URL-safe Base64 (with - and _) won't decode here — convert it first.

3. Press Run

   Output is `text` — the UTF-8 view of the decoded bytes. Invalid input that decodes to zero bytes throws a clear error so you don't get a misleading empty string.

4. Watch for null bytes

   If the decoded buffer contains a null character, the result includes a note: the payload is probably binary, not text. UTF-8 rendering will look ragged — treat it as bytes.