Yinon Oved

Software Engineering Manager

Yinon is Software Engineering Manager for Vonage design infrastructure, with over 12 years of web applications development experience. Passionate for JavaScript, the web, open-source, and routing b...

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WCAG: How to implement web accessibility

Last updated on Nov 08, 2021

An accessible application is one that anyone, even individuals with disabilities, can use. Unfortunately, many organizations ignore accessibility during development. Companies often perceive accessibility as a feature rather than a necessity, which results in web content accessibility guidelines (WCAG) remaining overlooked until they fade off in the backlog. Prioritizing accessibility might even feel extraneous to users we assume are non-disabled.

Accessibility, however, is not a feature: it is a social issue. Everyone has the right to access the internet, and companies need to make sure they create their applications to allow people with disabilities to use them. To help improve accessibility, organizations can educate teams, recruit in-house experts, and even get 3rd party services to support repair processes.

Here are some things to think about when creating an accessibility strategy for your application.


WCAG defines three levels of conformance (A, AA, AAA) an organization may adopt. Most countries' laws require UX to comply with at least the first level (A).

Your company can start with level A and work your way up to higher levels.

Product teams should include accessibility targets in each release. Each team member should take on specific tasks to ensure they set up the product for success. This process will result in improved, sustainable accessibility.

Remember, every feature you make more accessible improves the experience for some users. You don't have to solve it all at once to improve.


You can use automated tools, such as tests, linters, browser addons, and IDE plugins to help find accessibility problems.

At Vonage, we maintain a library (Vivid), so our engineers can enjoy the benefits of UI-based components built from the ground up to meet WCAG's success criteria.

Vonage's Vivid web UI library helps you integrate the library across Vonage products and makes it easy to handle violations in a single codebase.

Here are a few other tools you may find helpful.

Remember that automated tools generally pick up less than 40% of errors, and they are superficial (e.g., color contrast, inputs associated with labels, and more).

Furthermore, compliance does not equal a genuinely accessible site. You must manually test and review your code in addition to using tools.


If you have the resources, consider using 3rd party services that review applications by actual users, some even with relevant disabilities, which will provide actual "field" data on UX failures. Here are some services you can consider using.


Your application should also have an accessibility statement to:

  • Show your users that you care about accessibility and them.
  • Provide them with information about the accessibility of your content.
  • Demonstrate commitment to accessibility and social responsibility.

You can learn more about developing an accessibility statement here.

Here is a tool for generating your statement you may find helpful.

In addition to your accessibility statement, make sure you keep an open channel for users' feedback on your application as well.


Accessibility is a human right, not a feature.

Once your organization adopts this mindset, your team will think of accessibility as a top priority, not something to push into your team's backlog.

I encourage everyone who is starting to learn about accessibility to initiate action in their organizational environment.

Please raise any questions, arguments, concerns in the comments. I would love to hear back.

You can reach us on Twitter or on Slack.

Thank you for reading!