Typography is part of our everyday life. It is closely intertwined with the representation of information, communication, and even cultural identity. Due to the lack of appropriate technologies, only a few typefaces were in use before the invention of the printing press and computers. Then, almost overnight, a flood of new letter styles appeared. Nowadays, however, there is a huge number of tools available for designing typefaces and therefore, almost anyone can do it. Nonetheless, not every font is useful and well designed. Successful design requires following the established technical principles. This thesis deals with font design and the evaluation of legibility. In the theoretical part, we explained the basic concepts concerning typography; the breakdown of the letter sign and letter styles. We described the principles of type design and explained the concept of legibility and its influences. We also elucidated measurements of legibility using an eye-tracking device. In the experimental part, we analysed our own typeface and identified its letter style. We then tested the legibility of the typeface based on predetermined texts, a questionnaire and an eye-movement tracking tool. Lastly, we analysed the results of the survey. The designed typeface has proved itself to be most legible in larger type sizes in terms of reading speed. However, the longest saccadic movements and the smallest number of fixations were measured in smaller sizes.
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