Computed accessibility properties (e.g.An accessibility tree (a subset of the DOM tree).You’ll find a bunch of information here, such as: Open up the Accessibility pane which is found in the Elements Panelīonus tip: rather than having to locate the pane (it’s not open by default), I search for ‘Show Accessibility’ in the Command Menu ( Cmd + Shift + P).To start using this, you can open up the Accessibility pane with an inspected element: Validating the information you see in this pane can help answer the question: “Am I coding accessibility incorrectly”, whether it’s syntactically or structurally, just keep in mind, applying accessibility techniques with the correct syntax, and having an accessible website, are two different things! The accessibility pane within the Elements Panel ( Large preview) The Accessibility pane within DevTools can cherry-pick such a property ( role) and present it to you, so it’s clear what accessibility-related properties an element has. It’s absolutely worth using on your own websites, but it does require understanding the fundamentals of web accessibility to ensure you’re using it in a way which will help your users.įor example consider the following piece of HTML: Īn assistive device, such as a screen reader, can use the role="alert" property to announce such information to the user. This refers to a DevTools pane which lets you view various accessibility properties and ARIA information for DOM nodes.ĪRIA refers to a collection of properties, typically used in HTML, which in turn makes your website more accessible to individuals of different abilities. This feature can also be reported to you through a Lighthouse Report, covered in Lighthouse section of this article. Click on the text which says ‘Contrast ratio’ which presents further information on this subjectĪs an exercise for yourself: drag the circular color picker tool across the color spectrum and observe the points at which the minimum contrast and enhanced contrast ratios are satisfied.Find the color property in the Styles pane, and click the small colored square to bring up the color picker tool.Inspect a text element with the DevTools.Contrast ratio in the color picker tool ( Large preview)Īvailable in the color picker tool, the contrast ratio feature can inform you on whether a minimum contrast requirement has been met. Using this tool can help influence the design and color scheme of your website, which can lead to more readable content for users with low vision. Using the contrast ratio tool can give us an immediate yes/no answer to the question: does this text meet the minimum contrast standard. Understanding Success Criterion 1.4.3: Contrast (Minimum) “The intent is to provide enough contrast between text and its background so that it can be read by people with moderately low vision.” A mobile device has lowered its screen brightness all the way down to preserve battery life.Looking at a screen while outside with lots of sunlight.In addition, it helps support users reading your text in a variety of environmental conditions, consider these examples which can impact how a user perceives text legibility: Typically, a high level of contrast between the text color and underlying background color means more legible text for users of different abilities. This is a feature to check whether the inspected text has a satisfactory color contrast against the background color. There are accessibility-related features scattered throughout, so let us explore what they do, where they live, and how to use them. around JavaScript debugging, performance, and so on. The different panels correspond to different features, e.g. Just like that, you’ve opened up DevTools and have begun inspecting elements.
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