Smart Web Apps Base64 Converter
Category

Base64 Converter

Encode or decode Base64 with Unicode-safe handling. Includes copy-to-clipboard, reset, and clear error messages.

Paste text or Base64, choose an action, then click Convert.
Formula: Base64 = btoa(UTF-8 bytes); Decode = UTF-8 bytes from atob(Base64).

Tool description

Base64 is an encoding format that converts binary data into ASCII text. It’s commonly used for data URLs, tokens (not secrets), email attachments, and transport through systems that expect plain text.

How to use

  1. Select Encode or Decode.
  2. Paste your input.
  3. Click Convert.
  4. Use Copy output to copy the result.

Why it’s useful

  • Embed images as data URLs for quick testing.
  • Encode UTF‑8 text safely for transport.
  • Decode Base64 payloads when debugging APIs.

FAQs

Yes. This tool converts text to UTF‑8 bytes before encoding, and decodes UTF‑8 bytes back to text.

No. Base64 is an encoding. Anyone can decode it. Don’t treat Base64 as a security mechanism.
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