Auto-Write SEO + Accessibility Alt Text for Every New Shopify Product Image
Missing image alt text quietly costs you Google Image traffic and fails accessibility. This workflow catches every new product, asks Claude to look at each image and write descriptive, keyword-aware alt text, then writes it straight back to Shopify.
- 1
Trigger on new products
A
Shopify Triggeronproducts/createfires whenever you add a product (or run it on a schedule to backfill your catalog). - 2
Loop the images
A
Codenode lists each image URL that has no alt text yet. - 3
Ask Claude to describe it
An
HTTP Requestto Claude passes the image URL and product context and asks for concise alt text (under 125 characters) that names the product and a relevant keyword — no 'image of'. - 4
Write it back to Shopify
A
Shopifynode updates each image'saltfield with the generated text. - 5
Log for review
Append product, image and new alt text to a
Google Sheetso you can spot-check quality.
Frequently asked questions
Won't automated alt text look spammy to Google?
Not the way this is prompted — Claude writes natural, descriptive text, not keyword stuffing. Descriptive alt text is exactly what Google's accessibility-aligned image guidelines reward.
Can it backfill my existing catalog?
Yes. Swap the trigger for a Schedule Trigger plus a Shopify 'get all products' node and it will work through every image that's currently missing alt text, then stop.
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