Helpful Online Resources for HTML, CSS, JavaScript, Accessibility, and Email

When Alexis Deveria launched Can I Use? in 2008, the helpful online site that eventually grew to include support tables for HTML, CSS, and JavaScript, it was a welcome resource for designers and developers.

Why?

Folks were struggling with browser compatibility for features.

There wasn’t any resource online like Can I Use? at the time: an easy-to-read resource that quickly told you whether a browser supported a specific feature.

More than a decade later, Can I Use? is the top resource that web folks turn to when they need to learn about browser compatibility .

The success of Can I Use? has contributed to the launch of similar sites that provide helpful information to web designers and developers as well as content strategists.

Which I use on a regular basis and I thought would be useful to you.

Here’s my list of helpful online resources.

Can I Use?

The resource I’ve used for years and that many designers and developers use on a daily basis.

Can I Use? displays browser support for front-end web technologies (HTML, CSS, JavaScript) on desktop and mobile web browsers.

Can I Use results for flexbox, highlighting support across 14 browsers in a table.

Who Can Use

Helps you understand how color combinations can affect different people with visual impairments.

Who Can Use results for color combination of a blue background with white text, highlighting regular vision, protanomaly, protanopia, deuteranomaly, and deuteranopia.

Can I DevTools?

Compares and contrasts devtool features across all major browsers.

Can I Use Devtools page listing 9 CSS elements and their support across Chrome, Firefox, Edge, and Opera.

Can I Include?

Will let you know whether one HTML tag can be included in another HTML tag.

Can I include results for whether you can include a paragraph element inside a video element, which you can't.

Accessibility Support

Tells you whether your code will work with assistive technologies.

Accessibility Support home page highlighting features and results.

Can I Email?

Displays support for different HTML and CSS elements on different email applications.

Can I email results for html5, showing support across browsers. Estimated support is 69.7% across browsers.

Thanks to Josh Comeau who first tweeted about the different sites and other folks who replied with additional helpful resources.

Have any similar online web design and development resources you use? Share them in the comments.

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About the Author

Deborah Edwards-Oñoro enjoys birding, gardening, taking photos, reading, and watching tennis. She's retired from a 25+ year career in web design, usability, and accessibility.