When comparing Proggy Clean vs KaiTi, the Slant community recommends Proggy Clean for most people. In the question“What are the best programming fonts?” Proggy Clean is ranked 42nd while KaiTi is ranked 124th. The most important reason people chose Proggy Clean is:
All characters are completely readable in the smallest size. Perfectly usable in terminal and code editors in 12px text size.
Ranked in these QuestionsQuestion Ranking
Pros
Pro The easiest to read
All characters are completely readable in the smallest size.
Perfectly usable in terminal and code editors in 12px text size.
Pro Hipster among hipsters
Even hipsters will marvel at this font, praising you as the new hipster lord. It is best at around 19px (tested on Mac). Overall, it has better readability than many default fonts.
Pro Very clear even at small sizes
This font is included in windows by default and is really easy to read at small sizes, allowing you to keep more code on the screen. It was originally designed for simplified Chinese.
Cons
Con Pixelated
This is, of course, intentional; but it can be hard to look at compared to other smooth mono-space fonts.
Con Smallest font sizes hard to read
Fonts less than 11pt start to fail readability tests. 9pt specifically has an additional issue where brackets don't align.
Con Not really good in all font-sizes
Completely clean pixels, no anti-aliasing so its best viewed in (n*12) pixel size.
Bold font-weight is not really good because of small padding between them.
Con No differentiation between 0O and Il
Zero O and cap-I lower-l look the same