- It should be discussed with the designers and clients that 10px are not legible and thus not user friendly, especially on high resolutions or small screens – a fair minimum size should be 12px, rarely 11px should be ok.
- But in case it is strongly required by the project, then either – Increase the font-size to be equivalent to 11px.
- Or, Change the font-family to either Tahoma, Verdana, or Geneva, as these fonts are designed to be small.
Following URL can be useful during client discussion on the same -> http://www.motive.co.nz/guides/typography/arial.php
(This site provides details of each and every font, size, and weight and how it looks in different browsers:)