Extension for responsive font

VanillaJS extension (based on jQuery.fontFlex) for dynamically changing font sizes according to container / browser width. Intended for use with responsive or adaptive CSS layouts.

Include the fontFlex.min.js before the </body> of your HTML document:

<script src="fontFlex.min.js"></script> How to Use

Define a default CSS font base by setting font-size: 1em and line-height: 150% on the body or intended element. Declaring the font-size is optional, but highly recommended in case javascript is disabled. Finally, call the plugin on said element.

Syntax Example

FontFlex({ min: 20, max: 60, mid: 40, target: 'h1' });

Custom Parameters min Minimum font-size in pixels max Maximum font-size in pixels mid Mid-range buffer. Values ranging from 60 to 70 produce the best results. Lower values produce a larger initial font-size, while higher values produce the opposite. Adjust accordingly to fit your requirements.

IE 9+	Latest	Latest	Latest	Latest

Check CONTRIBUTING.md for more information.

Check Releases for detailed changelog.

MIT