Base64 Decoder SECURE

Decode Base64 strings back to their original plain text.

Convert Base64 encoded strings back to original text. Perfect for decoding API responses, email attachments, and more.

How to use this tool
  • Paste your Base64 encoded string
  • Toggle Live Mode for automatic decoding
  • Click "Decode" button or press Ctrl+Enter
  • Copy decoded text or download as file
  • Upload a Base64 encoded file directly
Privacy & Safety

All processing is done locally in your browser. No data is uploaded or stored.

Why choose this tool?

Instant decoding, live mode, file upload, and copy/download options.

Live Mode
Base64 String
Decoded Output
What is Base64?

Base64 is an encoding scheme that converts binary data into text format using 64 ASCII characters.

What can Base64 decode?

It can decode text, JSON, HTML, and other data encoded in Base64 format.

Is this tool free?

Yes – completely free, no registration required.