Learn from Jon Kuperman's courses

I was surprised to know just how capable the DevTools are, and how resourceful they can be to debug and improve the performance of your applications.

Rohan Khalate

This course convinced me that implementing accessibility is a major step to being a better web developer.

Mohammed Abdelazem

Awesome content! It really opens my mind to A11y and how easy it can be to implement it.

Vitor Coutinho Fernandes

Just finished the Website Accessibility, v3 course on Frontend Masters by Jon Kuperman. Honestly, I had heard of web accessibility before, but never truly explored it. This course opened my eyes to the real impact of semantic HTML, ARIA roles, focus management, and proper contrast. Huge thanks to Jon for sharing not just technical skills but also real-world experiences that made everything more relatable. Highly recommended for any frontend developer!

Md.Sajib Ahmed

Quick and rich course about website accessibility that fills our toolbox from the beginning. With small details that are easy to implement in our development process without increasing too much the overall time, a win-win. Jon Kuperman delivered a five star course once again.

Tiago Couto

The course was foundational and easy to follow. While it focused on Vanilla JavaScript, I’ll definitely be exploring more techniques for mastering Chrome Developer Tools—especially those that pair well with React development. It was a great starting point, and I believe it takes time and practice to grow more comfortable with these tools and apply them effectively across different frameworks.

Michael Joshua Ramos

Learnt about Web Accessibility! When you make your website accessible; Everyone benefits!

Isaac Agboola

the_isaacagbola

For real, you did something with this course Jon Kuperman my mind is blown by how much I’ve been underutilizing these very powerful tools. Well done!

Natalie Davis

codeFreedomRitr

Website Accessibility v2 by Jon Kuperman on Frontend Masters was a fantastic course to get started on improving sites. Accessibility was overlooked on previous projects I was involved in but now I know what to do going forward.

Diana Le

dianale_dev

This was a great overview of Chrome Dev Tools and I feel much more confident using it for optimizing websites and not just console.log 😆

Jessica Fuller

lift_eat_code

Developers who are learning to code or are early in their career often don't have much knowledge of working with the DevTools. Being able to work with the DevTools can help you tremendously.

Tiger Abrodi

TAbrodi

I just completed "Website Accessibility, v2" by Jon Kuperman on Frontend Masters! And I realize how terrible I did accessibility as a frontend engineer in the past. I am already applying everything I learned in this course to my everyday work.

Hung Viet Nguyen

hung_dev

Jon Kuperman

Bloomberg

Jon Kuperman's Courses

Website Accessibility, v3

Mastering Chrome Developer Tools, v4

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