By the way, here is the text contained in the TAdvMemo:
Ensure that images with empty or null alt text and no title attribute are decorative or should otherwise be ignored by assistive technology [A, 1.1.1; F30, H67] [A, 1.2.1; F30]. Visit https://www.w3.org/TR/WCAG20-TECHS/F30 and https://www.w3.org/TR/WCAG20-TECHS/H67 for more information. This message is displayed up to 3 times.
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(Accessibility) Images may require a "longdesc" attribute to provide a URI that contains a long description that describes the image [A, 1.1.1; H45]. Visit https://www.w3.org/TR/WCAG20-TECHS/H45 for more information. This message is displayed up to 3 times.
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Image searches can be a significant source of visitors and traffic. Therefore, try to use keywords when naming images, and separate keywords with hyphens (not underscores). This message is displayed only once.
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[7] Ensure that the "img" element is rarely, if ever, used as a layout tool. Always use CSS for layout and positioning. This message is displayed only once.
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GIF images are well supported in today's browsers but so are PNG images, which are, in many cases, superior to GIF because PNG images can support more colors, better transparency, and better compression (smaller file sizes). However, PNG does not support animation and may suffer from CSS color matching issues (visit https://www.htmlvalidator.com/CSEForum/viewtopic.php?f=3&t=1583). Consider using PNG images instead of GIF images if animation is not required. JPG is usually best for photographs. This message is displayed only once. There may be other GIF images specified in this document.
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(Accessibility) If using an animated GIF (or other animated or updating content), then be sure that it is accessible. For example, make sure that content that blinks for more than five seconds has a mechanism to pause. Also, set animated gif images to stop blinking within 5 seconds. [A, 2.2.2; F7, G152]. Visit for https://www.w3.org/TR/WCAG20-TECHS/F7 and https://www.w3.org/TR/WCAG20-TECHS/G152 more information. This message is displayed only once.
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