Encode text to Ascii85 (Base85) or decode it back. More compact than Base64. UTF-8 aware, runs in your browser.
Base85 (the Ascii85 variant) is a binary-to-text encoding that packs every 4 bytes into 5 printable ASCII characters. It is about 25% more compact than Base64 (which uses 4 characters per 3 bytes), at the cost of using more punctuation characters.
Ascii85 is used inside Adobe PostScript and PDF files to embed binary data as text, and in some version-control and email contexts. It is handy when you need text-safe encoding that is smaller than Base64.
No. Encoding and decoding run entirely in your browser. The tool is UTF-8 aware, so text with accents and emoji round-trips correctly.