Choose why the image exists first, then generate useful alt text candidates, an HTML example, and a practical accessibility checklist.
Image alt decision board
Separate decorative, informative, product, button, text, and complex images first so the alt text becomes straightforward.
Core rule
Describe the meaning a user needs on this page, not every visual detail in the image.
Quick examples
Decision
Product/place image
Length
109
Passed
10/10
Add only the details that affect meaning: subject, page context, action, visible text, and optional keyword.
Alternative text communicates the role of an image in context. Decorative images use empty alt, functional images describe the action, informative images convey meaning, and complex images need short alt plus supporting text or data.
No. Describe only what is needed for the page context. Decorative images are better with alt="".
Only when they naturally fit the image and context. Keyword stuffing hurts accessibility and quality.
Usually no. Provide a short alt plus nearby text, a table, or another long description of the data.
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