ｆｕｌｌ ｗｉｄｔｈ ａｅｓｔｈｅｔｉｃｓ
vape is a command-line tool that converts text into "vaporwave" text - fullwidth UTF-8 characters.
More technically, characters in the range U+0021 to U+007E are translated forward by 0xFEE0, and the space character U+0020 is converted to the ideographic (fullwidth) space U+3000.
$ printf 'the longer you live, the more ad revenue you generate\n' | vape
ｔｈｅ ｌｏｎｇｅｒ ｙｏｕ ｌｉｖｅ， ｔｈｅ ｍｏｒｅ ａｄ ｒｅｖｅｎｕｅ ｙｏｕ ｇｅｎｅｒａｔｅYou can also append up to 255 random fullwidth katakana:
$ printf 'cool, and nice\n' | vape -k 5
ｃｏｏｌ， ａｎｄ ｎｉｃｅ リマヾソルcargo install vape
Alternatively, direct binary downloads for a variety of platforms can be found on the releases page.