unifonter

unifonter is a filter that tries to make ASCII fancy with the help of Unicode

quick intro

unifonter is meant to be used as a filter, or as a quick lookup / translation tool. So you can use it either like

$ man man | unifonter
𝔐𝔄𝔑(1)                        𝔐𝔞𝔫𝔲𝔞𝔩 𝔭𝔞𝔤𝔢𝔯 𝔲𝔱𝔦𝔩𝔰                        𝔐𝔄𝔑(1)

𝔑𝔄𝔐𝔈
       𝔪𝔞𝔫 - 𝔞𝔫 𝔦𝔫𝔱𝔢𝔯𝔣𝔞𝔠𝔢 𝔱𝔬 𝔱𝔥𝔢 𝔰𝔶𝔰𝔱𝔢𝔪 𝔯𝔢𝔣𝔢𝔯𝔢𝔫𝔠𝔢 𝔪𝔞𝔫𝔲𝔞𝔩𝔰

𝔖𝔜𝔑𝔒𝔓𝔖ℑ𝔖
       𝔪𝔞𝔫 [𝔪𝔞𝔫 𝔬𝔭𝔱𝔦𝔬𝔫𝔰] [[𝔰𝔢𝔠𝔱𝔦𝔬𝔫] 𝔭𝔞𝔤𝔢 ...] ...
       𝔪𝔞𝔫 -𝔨 [𝔞𝔭𝔯𝔬𝔭𝔬𝔰 𝔬𝔭𝔱𝔦𝔬𝔫𝔰] 𝔯𝔢𝔤𝔢𝔵𝔭 ...
       𝔪𝔞𝔫 -𝔎 [𝔪𝔞𝔫 𝔬𝔭𝔱𝔦𝔬𝔫𝔰] [𝔰𝔢𝔠𝔱𝔦𝔬𝔫] 𝔱𝔢𝔯𝔪 ...
       𝔪𝔞𝔫 -𝔣 [𝔴𝔥𝔞𝔱𝔦𝔰 𝔬𝔭𝔱𝔦𝔬𝔫𝔰] 𝔭𝔞𝔤𝔢 ...

or

$ unifonter Hello
ℍ𝕖𝕝𝕝𝕠

Several different styles are supported; use -k followed by a style combination you want, otherwise one is chosen at random.

Supported styles can be seen via unifonter -d:

but note the order of the letters doesn't matter (-k bis is the same as -k sib), so if you find that you think "fraktur bold" instead of "bold fraktur", just go with it.

Some other options are supported; see the output of -h.