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Free Online Base64 Encoder & Decoder

Encode and decode text to/from Base64 format. Free online Base64 encoder/decoder tool. No signup required.

Base64 Encoder

About Base64 Encoding

  • Base64 encoding converts binary data into ASCII text format
  • Uses 64 characters: A-Z, a-z, 0-9, +, and /
  • Commonly used for encoding data in emails, URLs, and data URIs
  • Can encode text, images, and binary files
  • Output is approximately 33% larger than the original data