How to fix images missing alt bulk on Next.js (Headless)

Steps for Next.js (Headless)

1. Replace every bare <img> tag in your component tree with Next.js's next/image <Image> component, which enforces the alt prop at the TypeScript/prop-types level.
2. Create a shared ProductImage component (e.g. components/ProductImage.tsx) that accepts the product object and derives a meaningful alt string from structured data fields (e.g. product.title + variant color/size), with a non-empty fallback.
3. Create a shared ContentImage component (e.g. components/ContentImage.tsx) for CMS/editorial images that reads an explicit alt field from the CMS payload and falls back to the image caption or filename-derived string — never an empty string.
4. Audit your product listing page (e.g. app/products/page.tsx or pages/products/index.tsx), product detail page (app/products/[slug]/page.tsx or pages/products/[slug].tsx), and any content/blog pages — swap raw <img> / untyped <Image alt=''> usages for the new shared components.
5. Add an ESLint rule (jsx-a11y/alt-text) to your .eslintrc to catch empty or missing alt props at build time so regressions are blocked in CI.
6. Run next build and resolve any TypeScript or lint errors before deploying; verify rendered HTML with browser DevTools to confirm every <img> element in the output has a non-empty alt attribute.

What is images missing alt bulk?

Alt text (alternative text) is a short written description placed inside an image's HTML tag that explains what the image shows. When a page has dozens or hundreds of images missing alt text, it almost always means the root template — the product page layout, collection grid, or blog post design — is generating image tags without the `alt` attribute filled in. Fixing the template fixes every image it produces in one go, rather than editing each image individually.

Google explicitly uses alt text to understand image content and rank images in Google Images search — a meaningful source of free organic traffic for product-heavy stores. Pages where the majority of images have no alt text send a weak content signal to Google, which can suppress rankings for the entire page, not just the images. Beyond SEO, missing alt text is a WCAG 2.1 accessibility failure: screen-reader users — including those with visual impairments — cannot understand your product images at all, exposing your store to accessibility complaints and, in some jurisdictions, legal liability. Fixing this at the template level is a single change with store-wide impact across every page that template renders.

See the complete Images missing alt bulk guide for every platform and the full background.