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Products · § 1.7.2

Writing Shopify Product Descriptions That Rank (and Get Cited by AI)

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The rules, verbatim

Shopify's Adding keywords doc recommends 250 words minimum on product pages, 500 on informational pages, and warns verbatim: 'avoid directly copying text that's provided to you by a manufacturer.' The Optimizing-for-AI doc adds three description-specific content categories: 'comprehensive product descriptions with relevant keywords', 'comparison information with similar products', and 'sizing guides, material information, and care instructions.' Together, four primary rules: minimum 250 words, original copy, comprehensive content, comparison + sizing/material/care blocks.

The five-section pattern below is the structural answer to those four rules in one rewrite. Most hand-written Shopify descriptions ship sections 1 and 5 only (the opener and the close). Adding sections 2, 3, and 4 doubles word count, satisfies the AI content categories, and turns a thin description into a Catalog-ready PDP body.

The five-section pattern

In order: (1) benefits-led opener (40-60 words); (2) specifications block (10-15 bullet items); (3) comparison block (vs the next-closest SKU in your catalog or category); (4) sizing, material, and care block; (5) use-case or care-routine close. Total word count 350-700 words depending on product complexity. Each section serves a different reader behaviour — humans skim section 1, then bullet-scan 2 and 4; AI agents read 1-5 sequentially as evidence for their answers.

Section 1 — Benefits-led opener

40-60 words. The first paragraph of the description. State the product, the primary benefit, the buyer's situation. Avoid feature dumps in this section — that's section 2's job. Example for a linen Roman shade: "A floor-to-ceiling linen Roman shade for windows that want soft daylight without compromise on privacy. Hand-stitched natural linen, hidden cordless lift, blackout liner sewn in by default. Designed for windows 24-72 inches wide and made-to-order in 14 days."

Section 2 — Specifications

10-15 bullet items. Material, color, dimensions, weight, certifications, country of origin, batch info, sustainability claims. This section is where the AI agents pick up the structured spec data they cite when answering buyer queries. Use a real HTML bullet list (the Description rich-text editor supports it) so AI crawlers parse it cleanly.

Section 3 — Comparison block

Shopify's Optimizing-for-AI doc names "comparison information with similar products" as an explicit AI input. The comparison block names the next-closest SKU in your own catalog (not a competitor's product) and lists 3-5 distinguishing attributes. Example: "How this differs from our Sheer Linen Roman: this shade ships with a blackout liner standard; the Sheer Linen Roman is unlined for filtered daylight. Width range is 24-72in vs 30-60in on the sheer."

Section 4 — Sizing, material, and care

Shopify's Optimizing-for-AI doc names "sizing guides, material information, and care instructions" as an explicit AI input. Three sub-blocks: sizing (chart or measurement table), material (composition, weight, source), care (cleaning, storage, expected lifespan). For apparel, sizing is a table. For furniture, sizing is dimensional drawings or measurement text. For supplements, sizing is dosage and serving info.

Section 5 — Use case or care routine

Section 1 names the benefit; section 5 walks the use. 60-100 words describing how the product fits into the buyer's day, week, or year. For apparel: how to style. For skincare: where in the routine. For supplements: when and with what. This section closes the description with an answer to the implicit "how do I use this?" question buyers ask before purchase.

Why AI agents read this structure

AI shopping engines (ChatGPT, Perplexity, Gemini, Copilot) generate buyer-facing answers by extracting evidence from PDP descriptions. A buyer asking 'what's the best linen Roman shade for a 30x60 window with blackout?' triggers the engine to scan PDP descriptions for the matching specs. A description that buries the specs in prose fails the extraction. A description that has a structured specifications block, a sizing block, and a comparison block surfaces the evidence the engine needs.

The five-section pattern is structural, not stylistic. The agent doesn't read prose voice; it reads structure. A poetic description with all the right facts buried in run-on paragraphs gets ignored. A structurally clear description with workmanlike prose gets cited. The 2026 reframe: write to be quoted, not admired.

Word count guidance

Shopify recommends 250 words minimum on product pages. The five-section pattern usually lands at 350-700 words. The variation is honest — a 30ml supplement with simple specs lands at 350 words; a configurable furniture piece with options and care routines lands at 700. Don't pad to hit a number; structure to cover every section. The minimum exists to prevent thin pages; the maximum exists only when prose becomes redundant.

The honest counter-example: very simple products (a single SKU with no variants, no comparisons, no care routine) can be Catalog-ready at 200-250 words with the same five sections in compressed form. The constraint is structural coverage, not word count. If sections 1-5 are each present with at least one factual sentence, the description is doing its job at any length above 200 words.

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