Image links can support navigation and conversions, but search engines and visitors need enough context to interpret them correctly.
Use Descriptive File Names and Alt Text
Choose readable file names and alternative text that accurately describe the visual and its function. Do not force unrelated keywords into accessibility text.
Add Relationship Attributes When Required
Use sponsored for paid placements and affiliate relationships, nofollow when you do not want to endorse a destination, and ugc for user-generated links when appropriate.
Optimize the Image File
Resize images to their displayed dimensions, use modern formats, include width and height, and lazy-load noncritical visuals to protect Core Web Vitals.