How to fix multiple h1 on Shopify

Steps for Shopify

1. Go to Online Store → Themes → click Actions → Edit code on your active theme.
2. Open the template file for the affected page type: product.liquid (or sections/main-product.liquid in Dawn-based themes) for product pages, collection.liquid or sections/main-collection-product-grid.liquid for collections, index.liquid or sections/image-banner.liquid for the homepage.
3. Search (Ctrl+F) for '<h1' in each file. There should be exactly one. Change any extras to <h2> or the correct semantic level.
4. In product card snippets (e.g. snippets/card-product.liquid), product titles are often wrapped in H3 — confirm they are NOT H1.
5. Check any installed apps that inject HTML (reviews, upsell widgets) by previewing the page and using browser DevTools → Elements → search for h1.
6. Save each file, preview on a live page, and confirm with DevTools or an SEO checker.

What is multiple h1?

An H1 is the main heading on a webpage — think of it as the title of a book chapter. It tells both visitors and search engines what the page is fundamentally about. HTML allows you to put as many H1 tags on a page as you like, but best practice — and Google's own guidance — is to use exactly one H1 per page. When a page has dozens or even hundreds of H1 tags (which can happen when a theme or plugin wraps every product card, section, or widget in an H1), the heading structure breaks down entirely. Everything below the H1 should be organized with H2, H3, and so on — like chapters and subheadings in a document.

Google uses heading structure — especially the H1 — as a strong signal for understanding what a page is about and for generating the blue title link shown in search results. A page with 95 H1 tags sends contradictory signals: Google cannot determine which heading represents the page's true topic, which can dilute your keyword relevance and hurt rankings. Beyond SEO, screen readers used by visually impaired shoppers rely on a single H1 to orient users when they land on a page — multiple H1s create a confusing and legally risky accessibility experience (WCAG 2.x guidelines and laws like the ADA reference proper heading structure). Fixing this is typically a quick template or theme change, yet it can meaningfully improve both your organic search visibility and the accessibility of your store.

See the complete Multiple h1 guide for every platform and the full background.