Base64 Decoder

Decode Base64 strings to original text or files instantly with our free online tool

Decoded output will appear here

How to use this Base64 Decoder:

  1. Paste your Base64 string in the left input box or upload a file containing Base64
  2. Select your preferred output format (auto-detect, text, or file)
  3. Click Decode to convert your Base64 to original format
  4. View the decoded output in the right panel
  5. Click Copy to copy the result to clipboard or Download to save it
  6. Click Clear All to reset both input and output
  7. For quick decoding, use the keyboard shortcut Ctrl+Enter (Windows) or Cmd+Enter (Mac)

About Base64 Decoding:

  • Base64 is a binary-to-text encoding scheme that represents binary data in an ASCII string format
  • Decoding converts Base64 strings back to their original binary/text format
  • Commonly used to decode email attachments, embedded images in HTML/CSS, and authentication headers
  • The auto-detect option will try to determine if the decoded data is text or binary
  • Binary files will be offered as downloads (images, PDFs, etc.)

Your data is processed in your browser only - we never store or send your input/output to any server