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Image alt length: Alt attribute text should contain fewer than 120 characters.Currently, files uploaded directly to Canvas create a redirect that does not properly verify image filenames. Image alt filename: Image filenames should not be used as the alt attribute describing the image content.Image alt text: Images should include an alt attribute describing the image content.Heading paragraphs: Headings should not contain more than 120 characters.This rule verifies link errors where the link text may include spaces and break the link into multiple links. Adjacent links: Adjacent links with the same URL should be a single link.The Accessibility Checker verifies the following accessibility rules: You may use other accessibility tools to verify additional content in Canvas.Īll accessibility components retain the parameters set by your institution's Theme Editor template. This tool only verifies content created within the Rich Content Editor. You can use the Accessibility Checker to design course content while considering accessibility attributes. The Rich Content Editor includes an accessibility tool that detects common accessibility errors within the editor.