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Encode text as Ascii85

Convert plain text into Adobe Ascii85, the dense encoding used in PDF and PostScript streams and git binary patches. Unicode text is encoded as UTF-8 first, then each 4-byte group becomes 5 characters from ! to u, an all-zero group collapses to z, and you can optionally wrap the output in <~ ~> delimiters.

When to use this tool

Use Ascii85 when you need a denser text encoding than Base64 (about 25% overhead instead of 33%), such as embedding binary data in PDF and PostScript streams or reading git binary patches.

Privacy and limitations

This conversion runs locally in your browser. Ascii85 is an encoding format, not encryption, so anyone can decode the result if they have the encoded text. It uses the Adobe scheme — distinct from the ZeroMQ Z85 alphabet used by the Base85 string generator.

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