Key Takeaways

  • Product image alt text should carry the product name + variant + angle — not marketing fluff.
  • A Littledata study found only 31% of Shopify product images had non-empty alt text — most stores have massive hidden gaps.
  • Decorative images still use alt=""; the goal is useful alternatives, not alt on every tag.
  • Scale with a scan → generate → review → export batch workflow (see the Shopify CSV workflow).

Why Ecommerce Alt Text Matters

For online stores, images are the product. Shoppers cannot pick up your item, so the photo and its alt text carry the descriptive load. Two audiences depend on that text:

  • Screen-reader users — who rely on alt text to know what they are "looking" at.
  • Search engines — which read alt text as an image-understanding signal within the page context.

The gap is large. A Littledata study of 200 Shopify stores found only 31% of product images had non-empty alt text (Littledata, 2023). If your catalog mirrors that, roughly two-thirds of your product images are invisible to assistive tech and under-described to search engines.

This guide focuses on the practical: a repeatable formula, real examples, and a workflow that survives a 5,000-SKU catalog.


The Product Image Alt Text Formula

For most product images, use this structure:

[Product name] + [key variant: color / size / material] + [view or angle]

Example:
"Women's navy wool blazer with gold buttons, front view"
"Stainless steel 20oz water bottle, midnight black, side view"

Keep it under ~125 characters so screen readers do not truncate. The variant matters: "blue sneaker" and "blue sneaker, size 12, top view" describe different things to a shopper deciding between listings.

Before / After Examples

Weak Why weak Strong
alt="image" No information at all "Ceramic coffee mug, matte white, 12oz"
alt="IMG_4481.jpg" Filename, meaningless to users "Leather crossbody bag, tan, front view"
alt="buy red dress cheap red dress" Keyword stuffed, spammy "Red wrap dress with tie waist, back view"

5 Common Ecommerce Mistakes

  1. Leaving the field empty at upload. Most CMS platforms include an alt field during upload. Skip it and the image ships with no alt attribute.
  2. Repeating the product title verbatim. If the product name is already visible as text near the image, a redundant alt adds noise. Describe the image, not the page.
  3. Keyword stuffing. Google explicitly discourages filling alt with repetitive search terms (Google Search Central, 2024).
  4. Writing alt for decorative images. Backgrounds and dividers should be alt="". Describing them adds screen-reader clutter.
  5. Auditing once. New products and theme changes add images constantly. A one-time fix goes stale in weeks.

A Batch Workflow for Large Catalogs

Manual alt text does not scale. For stores with more than a few dozen products, use this loop:

  1. Scan your store or a category page with a free alt text checker to find missing, empty, and weak alt.
  2. Generate drafts with an AI product image generator for the image set.
  3. Review by value — edit high-traffic and high-margin SKUs by hand; trust drafts for long-tail items.
  4. Export a CSV (see the Shopify CSV workflow) and hand it to your dev team or agency.
  5. Re-scan monthly so new uploads do not reopen the gap.

Find your catalog's alt text gaps.

Scan any product page or store URL. Free for up to 50 images/month — no credit card, no account required.

Free Ecommerce Scan

FAQ

What should ecommerce product image alt text include?

Include the product name, the key variant (color, size, material), and the view or angle. Example: "Men's gray running sneakers with mesh upper, side view." Skip marketing language and avoid repeating the filename.

Should every product image have alt text?

Every content image that conveys product information should have descriptive alt text. Purely decorative images (backgrounds, dividers) should use alt="" so screen readers skip them. The goal is useful alternatives, not alt on every single tag.

How do I write alt text for a large product catalog?

Use a batch workflow: scan the store to find missing or empty alt, generate drafts with an AI tool, review high-value SKUs by hand, then export a CSV for your dev or agency to apply. Re-scan monthly to catch drift from new uploads.

Conclusion

Ecommerce alt text is less about clever writing and more about coverage and consistency. Pick the product-name + variant + angle formula, avoid the five common mistakes, and run a scan-generate-review-export loop so the work survives catalog growth. The stores that win on accessibility and image SEO are usually the ones that made alt text a recurring workflow, not a one-time cleanup.


Sources & References