Keep images with their context
A diagram makes sense alongside its caption, product revision and surrounding instructions. Preserve that relationship instead of treating every image as a standalone asset.
Retrieve the explanation and the visual
Return the relevant diagram beside the text that explains it. Make the source easy to open so a reader can inspect the full procedure.
Test visual usefulness
Ask whether the image changes what the user can do. Avoid adding decorative screenshots that do not help verify or carry out the answer.