Comic Sans MS

Comic Sans MS is a sans-serif typeface created and designed by Vincent Connare and released by Microsoft in 1994. Designed as a non-connecting script, the typeface draws inspiration from comic book lettering, to emulate the informal and cartoonish tone of speech bubbles. It was originally developed for use in Microsoft's software, and since then has become widely recognized for its use in casual contexts such as children's books, personal documentation and in educational resources. The typeface was first introduced with Microsoft Windows as a part of the Microsoft Plus! Pack, and was later implemented into Microsoft Comic Chat as a comic styled chat application. Since then, Microsoft has described the font as "casual and legible" and a typeface which has garnered much popularity across a diverse set of user groups.

From the Wikipedia article “Comic Sans”, licensed under CC BY-SA 4.0.

Sans-serif faces work well for headings, captions, children's books and modern nonfiction. For long-form body text in print, most designers still prefer a serif.

Commercial typefaces require a licence that covers embedding in PDFs and ebooks; check the foundry's licence before you publish.