Skip to main content Accessibility Feedback

Automatic polyfilling

Yesterday, I neglected to include in my list of polyfills. is a service that reads the user agent of your visitor’s browser and automatically serves up just the polyfills that they need.

I haven’t personally used it on any projects yet, but it’s been recommended to me a handful of times. Check it out.

🚀 I just relaunched my Vanilla JS Pocket Guides with new code examples and real projects to help tie everything you’ll learn together. Check it out.

Have any questions or comments about this post? Email me at or contact me on Twitter at @ChrisFerdinandi.

Get Daily Developer Tips