Examples of other accessibility problems that can be caused by animated GIFs include: In addition to possibly causing seizures, animated GIFs can also cause problems for other users outside of those with seizure disorders. There is more information about photosensitive epilepsy and seizures on the Blinking or Scrolling Content error page. This is perhaps the most serious problem that animated GIFs can cause on your website and one that you want to carefully consider when deciding if and which animated GIFs to include on your website. People with photosensitive epilepsy can actually have seizures triggered by rapid flashing on websites. Impact on Accessibility What accessibility problems can be caused by animated GIFs?Īnimated GIFs can create a number of problems for users if not implemented with care, particularly those with photosensitive epilepsy. If a GIF contains at least 2 frame headers, then Accessibility Checker will understand it to be animated and an Image Animated GIF warning will be flagged. gif file is found, then Accessibility Checker will check to see if multiple frames are present in the GIF by looking for frame headers. While auditing your page or post content, Accessibility Checker will look at the HTML structure of the page to determine if a. How does Accessibility Checker test for GIFs? Unfortunately, many of the accessibility problems that can exist in animated GIFs cannot be identified programmatically, and you will need to manually review your GIFs to determine if they are accessible or not. There are ways to improve the accessibility of animated GIFs, as described below, but generally, it is not recommended that you include animated GIFs on your website if you want it to be fully accessible.Īccessibility Checker flags a warning when a GIF is present in order to remind you to manually review any animated GIFs on your website for their accessibility and/or to reconsider using animated GIFs, replacing them instead with static images or videos. GIFs can be a great tool for displaying content in a fun and engaging way, but they often cause distraction and can negatively impact the experience for certain groups of users on your website because they play automatically and cannot be paused or stopped by users. Why does Accessibility Checker flag a warning if a GIF is present on the page? If you see the Image Animated GIF warning in an Accessibility Checker audit of your WordPress site, that means that we have identified the presence of an animated GIF on the site.
What does the Image Animated GIF warning mean? GIFs typically play automatically, and cannot be paused.
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However, unlike JPGs or PNGs, GIFs can be animated to play a small, soundless video or series of images in a loop.
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How to find animated GIFs requiring review on your WordPress siteĪbout the Image Animated GIF Warning What is an animated GIF?Ī GIF (graphics interchange format) is a type of file that, in its simplest format shows an image and can be a replacement for JPG or PNG image files.How to Resolve an Image Animated GIF Warning.2.3.1 Three Flashes or Below Threshold – Level A.1.4.9 Images of Text (No Exception) – Level AAA.1.2.8 Media Alternative (prerecorded) – Level AAA.Is it possible to have an animated GIF on an accessible website?.
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