The fonts you use, as well as the colors of your text and background, can determine how easily people can read and digest the content on your website. If it can’t be easily read, it’s simply not going to convert very well.
There are no hard-and-fast rules about which fonts to use and which to avoid -- except you should never, ever use Comic Sans. Instead, stick to high-contrast color combinations and clean, ornamentation-free serif or sans serif fonts for best results.Here are a few tips and ideas on choosing the right fonts for your marketing.
As for font size, stick to larger fonts to give visitors a better experience whether they're on desktop or using a mobile device. For headlines, use a font size of 22 px or larger. For body copy, stick to 14 px or larger.