Images are often overlooked in SEO. But Google Image Search drives significant traffic, and optimized images improve page speed — a ranking factor.
Use Descriptive File Names
Rename your image files before uploading. Instead of IMG_1234.jpg, use handcrafted-leather-wallet-black.jpg. Google reads file names to understand image content.
Write Alt Text
Alt text describes an image for screen readers and search engines. Be descriptive and include keywords naturally. "Brown leather messenger bag with brass buckles" is better than "bag."
Compress Images
Large image files slow your store. Use tools like TinyPNG or Shopify apps to compress images without visible quality loss. Aim for under 200KB per product image.
Use WebP Format
WebP images are 25-35% smaller than JPEG or PNG. Shopify supports WebP. Convert your images to WebP for faster loading.
Add Images to Sitemap
Shopify includes product images in your sitemap automatically. Ensure image URLs are accessible to search engines. Do not block them in robots.txt.
Use Responsive Images
Serve different image sizes for different screen sizes. Shopify themes handle this, but verify by checking that mobile devices load smaller images than desktop.
Image SEO is easy to implement and delivers quick results.