Ecommerce On-Page SEO Checklist

Intro Text

Add 150-300 words of unique, keyword-rich content above the product grid. This text should include the primary keyword naturally, mention 2-3 subcategories or filters the user can browse, and answer a common buyer question. Place it above the fold but keep it collapsible on mobile so it does not push products below the viewport.

Faceted Navigation and Canonical Tags

Faceted filters (size, color, price range) generate thousands of URL combinations that create massive duplicate content problems. Here is how to handle it:

• Indexable facets: Only index filter combinations that have meaningful search volume (e.g., "red running shoes" = yes, "red + size 10 + under $100 + free shipping" = no).
• Canonical tags: For non-indexable facets, set the canonical URL to the parent category. For example, /shoes?color=red&size=10 should canonicalize to /shoes.
• AJAX loading: Load filtered results via AJAX without changing the URL for purely UX filters. This prevents index bloat entirely.
• robots.txt: Block crawl-intensive parameter combinations in robots.txt to preserve crawl budget on large catalogs.

Complete Product Schema Example

<script type="application/ld+json">
{
  "@context": "https://schema.org",
  "@type": "Product",
  "name": "Nike Air Max 90",
  "image": [
    "https://example.com/photos/nike-air-max-90-white.jpg",
    "https://example.com/photos/nike-air-max-90-side.jpg"
  ],
  "description": "Classic Nike Air Max 90 running shoe with visible Air cushioning and premium leather upper.",
  "sku": "NIKE-AM90-WHT-10",
  "brand": {
    "@type": "Brand",
    "name": "Nike"
  },
  "offers": {
    "@type": "Offer",
    "url": "https://example.com/nike-air-max-90",
    "priceCurrency": "USD",
    "price": "129.99",
    "priceValidUntil": "2026-12-31",
    "availability": "https://schema.org/InStock",
    "itemCondition": "https://schema.org/NewCondition",
    "seller": {
      "@type": "Organization",
      "name": "YourStore"
    }
  },
  "aggregateRating": {
    "@type": "AggregateRating",
    "ratingValue": "4.6",
    "reviewCount": "312"
  }
}
</script>

Validate your markup with Google's Rich Results Test (search.google.com/test/rich-results) and monitor errors in Search Console → Enhancements → Products. Common errors include missing priceCurrency, invalid availability values, and image URLs that return 404s.

User-Generated Content for SEO

Customer reviews and Q&A sections add fresh, keyword-rich content that search engines love. Reviews naturally include long-tail keywords, product attributes, and use-case language that you would never think to write yourself.

• Reviews: Display review text on the product page (not behind a tab), include aggregate rating schema, and allow photo/video reviews. Pages with reviews rank for 45% more keywords on average.
• Q&A sections: Each answered question adds indexable content. Structure Q&A with FAQ schema to earn rich results. Prioritize questions about sizing, compatibility, and use cases — these match real search queries.
• Review solicitation: Send review request emails 7-14 days after delivery. Offer a small incentive (discount code, loyalty points) for photo reviews to increase submission rates.

Image Optimization for Products

Product images drive traffic through Google Image Search and directly affect page speed, which is a ranking factor.

• Format: Serve images in WebP with JPEG fallback. WebP reduces file size by 25-35% versus JPEG at comparable quality.
• Dimensions: Serve images at the exact display size. Do not upload 4000px images and scale down with CSS — the browser still downloads the full file.
• Alt text: Write descriptive alt text like "Nike Air Max 90 white and red side view" — not "shoe" or "image123.jpg". Include the product name and one key visual attribute.
• Lazy loading: Use loading="lazy" on all images below the fold. Above-the-fold hero images should use loading="eager" and fetchpriority="high" for LCP optimization.
• Image sitemap: Submit an image sitemap in Google Search Console to help Google discover and index all product images, especially for JavaScript-heavy galleries.

Out-of-Stock Product Handling

How you handle out-of-stock products directly impacts SEO equity and user experience. Here is a decision tree:

• Temporarily out of stock: Keep the page live and indexable. Add a prominent "Out of Stock" banner, display related or alternative products, and add an email notification signup. This preserves backlinks and rankings.
• Permanently discontinued: 301 redirect to the closest equivalent product or the parent category. Never redirect to the homepage — that is a soft 404 in Google's eyes.
• Seasonal products: Keep the URL live year-round with a "Coming Back Soon" message and related product suggestions. The URL has accumulated authority that you lose if you 404 it.
• Never do this: Do not auto-redirect all out-of-stock products to a single page. Do not return a soft 404 (page loads but shows "product not found"). Do not noindex the page unless it has zero traffic and zero backlinks.