Base64 Decoder

Convert Base64 encoded data back to text. Paste your Base64 string in the input box or upload a file, and see the decoded result instantly. Also supports decoding data URIs.

Base64 Input

Decoded Output

About Base64 Decoding

Base64 decoding converts Base64 encoded strings back to their original text or binary format. This tool supports various Base64 encoded content, including:

  • Standard Base64 encoded text
  • Data URIs (automatically extracts Base64 data)
  • URL-safe Base64 variants
  • Padded and unpadded Base64
  • UTF-8 encoded text

Tips

  • • Whitespace in the input is automatically removed
  • • When pasting a data URI, the Base64 part is automatically extracted
  • • The decoder validates the input format before attempting to decode