Base64 is a way of representing binary data as plain text, widely used in emails, APIs, auth tokens and embedded image URLs. This tool converts text to Base64 and back, instantly.
Paste your content, click Encode or Decode, and the result appears in the same box, ready to copy.
When to use Base64
- Debugging JWT tokens or Basic Auth headers in APIs.
- Embedding small images directly in CSS or HTML (data URIs).
- Inspecting the content of Base64-encoded email attachments.
- Transmitting binary data over formats that only accept plain text.