Unlimited UTF-8! ASCII ⊆ UTF-8 ⊆ UTF-8000. No special cases introduced. All properties preserved. Try out the reference implementation with $ pipx install UTF-8000 . UTF-8000 is in no way endorsed by or representative of the Unicode Consortium . This is a fun standalone project / proposal. TLDR / Examples ASCII 1 0 xxxxxxx UTF-8 2 11 0 xxxx x 10 xxxxxx 3 11 10 xxxx 10 x xxxxx 10 xxxxxx 4 11 110 xxx 10 xx xxxx 10 xxxxxx 10 xxxxxx UTF-8000 5 11 1110 xx 10 xxx xxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 6 11 11110 x 10 xxxx xx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 7 11 111110 10 xxxxx x 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 8 11 111111 10 0 xxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 9 11 111111 10 10 xxxx 10 x xxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 11 111111 10 110 xxx 10 xx xxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx ... 22 11 111111 10 111111 10 111111 10 110 xxx 10 xx xxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx 10 xxxxxx ...…