A few suggestions:<p>The animated GIF in the README is too fast to read. Remove it in favor of the static image you have. But make the font size of that image larger.<p>Display the output in a table, rather than in a comma-separated form, so it's easier to understand and faster to reference. (There are many modules that provide tabular printing.)<p><pre><code> Hash Hashcat jtr Description
---- ------- ------- -----------
MD5 raw-md5
NTLM 1000 nt Often used in Windows Active Directory
</code></pre>
(According to your output Hashcat doesn't support MD5?)<p>Hide the "Least Likely" section by default because it's such a wall-of-text, even with text coloring it's going to be impossible to interpret. I would simply print "Pass --less-likely to display 543 other hash types."
Hashes cannot be undone, so... this is just a tool to tell you how long a string of hex characters is and show you a list of hash functions with that length?