Base64 Encoder / Decoder

Convert UTF-8 text to Base64 and back in one click.

Output

About this tool

Use this tool to quickly encode plain text to Base64 or decode Base64 back to readable UTF-8 text. It is useful for JWT segment inspection and payload diagnostics.

Common use cases

  • Decode JWT header or payload fragments.
  • Inspect Base64 API blobs in logs.
  • Create quick encoded test values.

How it works

  1. Paste text or Base64 data.
  2. Choose Encode or Decode.
  3. Copy output for your workflow.

FAQ

Does it support Base64URL?
Yes, URL-safe characters are normalized before decoding.

Is this local-only?
Yes, processing happens in your browser.