Google SEO
Best practices — web.dev
How do image alt text, titles and captions differ?
Alt text describes the image for accessibility and image search. The title attribute can show a hover tooltip. A visible caption informs the reader. Do not mechanically duplicate all three.
Further analysis
Use this entry as an audit checkpoint. The cited source establishes the context; the direct answer identifies what to check before choosing an action.
In SFT, this topic relates to Structure. Check whether the signal is visible on the page, connected to the rest of the website and supported by understandable evidence.
Related search terms include alt versus title versus caption, image attributes. Use them to describe the issue in a brief, audit or answer page.
Applying SFT
Structure turns a rule into readable architecture: headings, URLs, structured data, visible content and clear hierarchy.