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Images and alt text

1 check, 5 guides, 3 comparisons

Writing alt text that says what an image is for, and when an image needs none.

Line drawing of a monitor showing a picture with the blank line under it ringed in orange — Fig. 1A picture on a page with a blank line under it, the place its text alternative belongs

Checks

Alt text check

Paste one image's alt text, say what the image does, and see each problem with a better pattern.

1.1.1 Non-text Content

Guides

Comparisons

Captioning services comparedHuman and human-checked captioning for recorded and live video, judged on review and formats.
Closed captioning software comparedTools to make and edit caption files yourself, from the editor to the export formats.
Audio description services comparedWho writes and voices audio description for marketing and training video.