Does font size affect SEO?

[Peter264]

In the eyes of Google, would the font text size of say a news article affect SEO?  For example, a slightly larger font being easier to read by those with bad eyes?  Accessibility?  If so, what size would be ideal? 10, 12, 14?

Your thoughts and suggestions are greatly appreciated.

[RyanKent]

The short answer: in the context of your question, font size has no effect on SEO. You can offer a page in any font-size ranging from 10 - 14 and it would not make any difference.

As the others suggested, your site's readability will impact the user experience. As long as your site is properly coded, browsers have the ability to change font-size to larger/smaller. It would be a nice feature to offer users a widget to allow them to change font-size to their preference.

The font-size may affect factors such as click-through rate, time on site and so forth. It does not directly affect SEO but could indirectly affect it through the user experience.

[ninjamarketer]

Font size impacts user experience and may impact SEO in certain cases. Providing users multiple font size options to choose from i.e small, medium, large helps user experience. Search spiders do look for usage of bold, italics and H1 tags on a web page. Better user experience generally lead to better SEO.

[mosaicpro]

I personally think that font size does not affect SEO. Rather the right size, spacing of the words and the type of font would count for your clients staying and reading your website (bounce rate) that affects SEO.