The alt attribute (alt="") is the HTML text that describes an image. Google cannot see images — it reads the alt text to understand what is depicted. On an e-commerce catalog, each product image without alt text is an SEO opportunity wasted.
Alt text formula for e-commerce
[Brand] + [Product name] + [Key attribute] + [View type]
- Front view: "Salomon XT-6 Women Trail Shoes Black — front view"
- Detail view: "Salomon XT-6 Women Trail Shoes — CONTAGRIP sole detail"
- Category: "Women trail running shoes collection 2026"
Google Images visibility
Optimized alt texts make your products appear in Google Images — an additional acquisition channel that many e-commerce sites completely ignore.
Page semantic reinforcement
Each alt text adds keyword context to the product page. The cumulative effect of 5 images with optimized alt texts strengthens the main ranking signal.
Accessibility compliance
Descriptive alt texts are required by WCAG accessibility guidelines. A well-optimized e-commerce site is SEO-friendly and accessible at the same time.
| Alt text | Problem | SEO impact |
|---|---|---|
| "" (empty) | Accessibility issue on content image | Zero — Google ignores it |
| "image1.jpg" | File name as alt | Near zero — no useful signal |
| "product" | Generic, no context | Very low |
| "Salomon XT-6 Women Trail Black" | None | Ranks in Google Images + semantic reinforcement |
On Shopify, image alt text is separate from the image file name. Optimize both: the file name (salomon-xt-6-women-trail-black.jpg) and the alt attribute in the product image section.
Bulk-optimize your image alt texts
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FAQ
Yes, in two ways: (1) it helps Google understand image content and index products in Google Images, (2) it adds semantic context to the page, reinforcing keyword signals for the main index.