Rocket ship taking off very fast.

Axe™ Updates: Deque releases axe-core 3.5!

With axe-core 3.5, you get 4 new rules, several bug fixes, and a new localization. But what has us especially excited is a much faster, more accurate color contrast test.

Faster color contrast testing

Accurately testing color contrast is one of the most challenging pieces of automated accessibility testing. With axe-core 3.5 we have completely changed how we are going about this. The new color contrast functionality speeds implement much faster on large pages with a slight trade-off; small tests may run slightly slower.

The second benefit of the new approach to color contrast is it’s less error-prone than the previous functionality. With this new test method, we are closing 13 color contrast false positives, reinforcing our commitment that in axe-core, false positives are considered bugs. If you report a perceived false positive, we investigate and fix the problem.

New Rules in axe-core 3.5

Rule 1: svg-img-alt

Ensures SVG elements with an img, graphics-document or graphics-symbol role have an accessible text.

Failure Example:

<svg xmlns="http://www.w3.org/2000/svg" role="img">
<circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow"></circle>
</svg>

Passing Example:

<svg xmlns="http://www.w3.org/2000/svg" role="img">
<title>1 circle</title>
<circle cx="50" cy="50" r="40" fill="yellow"></circle>
</svg>

Rule 2: identical-links-same-purpose

Ensures that links with the same accessible name serve a similar purpose.

Needs Review Example:

<a href="https://www.deque.com/">Deque Systems</a>
<a href="https://www.deque.com/">Home</a>

Passing Example:

<a href="https://www.deque.com/">Deque Systems</a>
<a href="https://www.deque.com/">Deque Systems</a>

Rule 3: landmark-no-duplicate-main

Ensures the document has at most one main landmark. This rule is split off from the landmark-one-main rule for better reporting. This rule does not find new issues.

Failure Example:

<main>Main 1</main>
<main>Main 2</main

Passing Example:

<main>Main 1</main>

Rule 4: no-autoplay-audio (experimental)

Ensures <video> or <audio> elements do not autoplay audio for more than three seconds without a control mechanism to stop or mute the audio. This rule is experimental and is currently available in our early-adopters extension axe coconut. To run experimental rules using the axe-core API, use the “experimental” tag in the runOnly option.

Failure Example:

<audio src=”path/to/audio/duration20s.mp3” autoplay></audio>

Passing Example:

<video src=”path/to/video/duration20s.mp4" autoplay controls></video>

Deprecated Template Language

The templating language used for messages in translations and custom rules is now deprecated. The new templating format allows axe-core to run under a stricter content security policy. The current format remains available in axe-core until the next major release of axe-core. We strongly recommend upgrading to the new template language within the next six months to anyone using custom rules and for authors of axe-core translations. For more information, see the message template documentation.

Deprecated Rules

The aria-dpub-role-fallback and layout-table rules are deprecated and superseded by rules added to axe-core in previous releases. These rules are now turned off by default but remain available until the next major release of axe-core.

Other Changes

  • New Danish localization, special thanks to Daniel Freiling and Marianne Gulstad Pedersen for contributing this new translation.
  • Performance improvement to td-has-headers.
  • The region and landmark-* rules now return individual elements instead of reporting the entire page as one issue.
  • The meta-viewport rule is now a best-practice instead of a WCAG 2.0 failure.
  • Improved the issue text of several rules involving the role attribute

For a complete list of changes, see the axe-core changelog.

Available in Deque Products

The axe-core 3.5 release will be available soon for WorldSpace Attest, Assure, Comply, and axe Pro.

Photo of Wilco Fiers

About Wilco Fiers

Wilco is software developer, and the product owner of Deque's axe-core and axe Linter. He has a leading role at the W3C, as project manager of WCAG 3.0 and facilitator of the ACT Task Force. Based in The Netherlands, Wilco is leading Deque’s contribution in the EU funded WAI-CooP project.
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