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- Avoid text in images (and make sure there is alt text if any do have text). In cases where important text must be included in images, make sure the same information in conveyed in the written copy so everyone regardless of their visual acuity is able to access the information.
- All images should have an alt attribute, either with alt text or blank so screen readers know it is purely decorative.
- Meaningful alt text which calls out the reason that the image was included in this context (explain diagrams and graphs).
- Upload high resolution images, and have the system size and crop them for different uses (banner/card/content photo). Uploading multiple versions of the same image in different sizes increases the likelihood of display and alt text mistakes that could make the image less clear to users.
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https://ux.princeton.edu/accessibility/accessibility-checklist Link to a post on meaningful alt text?
https://accessibility.huit.harvard.edu/describe-content-images