||In Japan, Universal Design Typefaces (UD Fonts) have been released by typeface manufacturers since 2006, and in recent years, UD Fonts that are easy for dyslexics to understand have been developed and are now included as standard in Win10. With the increasing use of smartphones and tablet PCs, and the digitisation of textbooks in the education sector, the need for fonts that are easy to understand on displays has increased, and usability evaluations are becoming more widespread. In the case of intellectual disabilities, the readability of fonts is also important, as skip reading and misrecognition of words and sentences are often observed. In this study, we evaluated the impressions of typefaces that people with both intellectual disability and autism spectrum disorder (ASD) felt were "easy to read". As a result of comparing the typefaces perceived as easy to read by people with intellectual disability and people with both intellectual disability and ASD, it was found that there were differences. The intellectual disability group found it easier to read typefaces with no contrast between the vertical and horizontal lines and rounded corners, while the ASD group found it easier to read typefaces with a strong contrast between the vertical and horizontal lines, a spike, and a strong expression of the spike..