Product image SEO
Product image SEO covers format selection (WebP, AVIF), writing descriptive alt attributes, naming files in kebab-case, and including images in the Product schema to appear in Google Images and rich results. Each step reduces friction for both crawlers and users.
In practice
The alt attribute should describe the image, not repeat the H1 title: a file named chaussure-trail-homme-bleu-45.webp with alt text 'Trail shoe men blue size 45 side view' is correct. Heavy images remain the leading cause of poor LCP on mobile product pages. An automated optimization pipeline (Sharp, Squoosh CLI) typically cuts average file size by two-thirds with no perceptible visual loss.