Uuencode / Uudecode — Free Online Tool

Classic Unix uuencode & uudecode with begin/end wrapper for text payloads. Uuencode / Uudecode is a free online tool from the ToolsRift Encoders & Decoders collection. It runs entirely in your browser — nothing to install, no signup, and your data never leaves your device.

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How to use Uuencode / Uudecode

Choose Encode or Decode. Encoding wraps your text in a begin 644 … / end block using the traditional uuencode alphabet; decoding reads that block back to text.

Frequently asked questions

What is uuencode?

A historic Unix encoding that packs 3 bytes into 4 printable characters (each 6-bit value plus 0x20), used to send binary data over text-only email and Usenet.

What do the begin and end lines mean?

'begin <mode> <name>' starts the stream with a file permission mode and name; a line with a single grave and 'end' close it. This tool includes them automatically.

Does it handle the space/backtick quirk?

Yes — zero values may be written as a backtick instead of a space, and the decoder accepts both.

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