A product description sells when it answers the question a buyer is really asking: why would I want this? Most small-shop descriptions stop at what the item is, its size and its material, which is accurate but does no work. Free AI tools can turn your real facts into a description that gives someone a reason to buy, provided you tell them who the buyer is and keep every fact true. This guide shows the method, three worked examples, and how to avoid the generic AI tone.
Key takeaways
- Give the AI four things: the real facts, who buys it, what it feels like to use, and what it must not claim.
- Verify every fact in the result. AI will happily invent materials, sizes and benefits.
- Write a different description for each product. Near-identical pages add nothing for a reader, and Google warns against producing many pages without adding value.
- Read the description without the photo. If you cannot tell what is special, it needs another pass.
Last reviewed 25 September 2026. Statements about Google were checked against Google Search Central on that date. The example products are fictional and the example text was generated with an AI assistant and lightly edited.
What does a description that does no work look like?
A typical small-business description reads: “Handmade ceramic mug. Holds 350ml. Dishwasher safe.” It is accurate and forgettable. It answers “what is this” and never “why would I want it”. A buyer comparing several mugs learns nothing that separates yours from the rest.
What is the four-part brief that fixes it?
| Part | What to give the AI | Example |
|---|---|---|
| Facts | Only things you know are true | Handmade, 350ml, dishwasher safe, glazed inside |
| Buyer | Who buys it and for what occasion | Gift for a friend, or a morning coffee ritual |
| Feeling | How it is used and how that feels | Weighty in the hand, keeps coffee warm a little longer |
| Limits | What it must not claim | No health claims, no “best”, no sizes I did not list |
What prompt should you use?
“Write a product description for [product]. Facts (use only these): [facts]. It is mostly bought by [buyer] for [occasion]. Write two or three short sentences, warm and specific, focused on how it feels to use. Do not use phrases like ‘crafted with love’ or ‘perfect for any occasion’. Do not add any fact, size or benefit I did not list.”
Example output for the mug, using the facts above: “A mug that makes the first coffee of the day feel a little more deliberate. Handmade, glazed inside, and it holds a full 350ml. It goes in the dishwasher afterwards, and it is the kind of gift that is easy to give because it is a pleasure to use yourself.”
How does the method work for other products?
Here are two more fictional examples, built the same way, so you can see how the brief changes the result.
- Handmade soap. Facts: cold-process, 100g, olive oil and shea butter, unscented. Buyer: someone with sensitive skin, or a gift. Result: “A plain, unscented bar made with olive oil and shea butter. It lathers gently, lasts well in the shower dish and is simple enough to give to anyone who prefers no fragrance.” Note that the brief did not claim it helps a skin condition, so the description does not either.
- Leather card holder. Facts: vegetable-tanned leather, holds six cards, 10cm by 7cm. Buyer: someone who carries little. Result: “A slim card holder for people who leave the wallet at home. Vegetable-tanned leather, room for six cards, and small enough for a back pocket.”
In both, every claim maps to a fact the seller supplied. That is the standard to keep.
How do you check that the facts are right?
- Compare every number, material and size in the result with your own listing or product record.
- Cut any sentence that describes a benefit you cannot back up, such as “long-lasting” or “healthy”.
- Check food, cosmetics and children’s products against the rules where you sell, because health, safety and allergen claims are regulated in many places.
- Keep a note of the final approved wording so you can reuse it.
Does Google mind AI-written descriptions?
Google’s guidance says that using generative AI to create content is not against its guidelines by itself, but that using it to generate many pages without adding value for users may violate its spam policy on scaled content abuse. It tells creators to focus on accuracy, quality and relevance, and notes that sharing how content was created can give readers helpful context (Google Search Central, page updated 2025-12-10, retrieved 2026-09-25). For a shop, the practical reading is simple: give each product its own accurate description, and do not paste one template across hundreds of items without editing it.
How do you do this for a whole catalogue?
Keep the same prompt structure and swap the details product by product. A simple table helps:
| Product | Facts to verify | Buyer | Feeling | Approved? |
|---|---|---|---|---|
| Mug | Size, glaze, dishwasher safe | Gift | Deliberate morning ritual | Yes / edit |
| Soap | Weight, ingredients | Sensitive skin | Gentle and simple | Yes / edit |
| Card holder | Leather type, capacity | Minimal carrier | Slim and light | Yes / edit |
What makes AI product copy sound generic?
AI drifts toward stock phrases such as “crafted with love” or “perfect for any occasion”, which could describe almost any product. If a line would fit a hundred other items, cut it or ask for a version that only makes sense for this one. A quick test is to read the description without seeing the photo: if you cannot tell what is special, it needs another pass.
The same reusable-brief idea drives our guide to turning one product photo into three Instagram posts, and there are more ready-made prompts in the free AI prompt swipe file. For the mistakes that make AI copy read as generic, see five mistakes small businesses make with AI marketing. The complete system is in Market Your Business With AI, our own course.
How long should the description be, and where does it go?
Length depends on the place. On your own site or a marketplace listing, two or three specific sentences plus a short list of facts is usually enough. In a social post, one sentence is enough. The point is to include what a buyer needs to decide, not to fill space. Google’s own guidance on creating helpful content is a good test: write for the reader first (Google Search Central, retrieved 2026-09-25).
Can AI write the facts list and titles too?
It can draft them from facts you supply. Ask for a title under 60 characters and a bullet list that only reuses your facts:
“From these facts only: [facts], write a product title under 60 characters and a bullet list of four short points. Do not add any size, material, benefit or claim that is not in my facts.”
Example output for the mug: title “Handmade Ceramic Mug, 350ml” and bullets: “Handmade”, “Holds 350ml”, “Glazed inside”, “Dishwasher safe”. Notice the AI added nothing, which is the behaviour you want.
What mistakes should you avoid?
- Stock phrases. Lines like “crafted with love” or “perfect for any occasion” could describe any item. Replace them with one detail only your product has.
- Invented benefits. If the AI says a soap is “good for eczema”, delete it. Health claims need proof and are regulated in many places.
- Mismatch with the photo. The words and the picture should describe the same thing, including colour and size.
- One template for everything. Copying the same wording across many listings makes your shop look generic and, on your own website, adds little value for readers.
Frequently asked questions
ChatGPT and Google Gemini can both do this on their free plans. The prompt matters more than the tool: supply real facts, name the buyer, and say what the description must not claim.
Ban stock phrases in the prompt, give specific facts, and read the result without the photo. If a line could describe any product, cut it or ask for a more specific version.
Long enough to answer the buyer’s questions and no longer. Two or three specific sentences usually beat a paragraph of general praise.
Google says generating many pages without adding value may violate its spam policy on scaled content abuse. Write an accurate, distinct description for each product and review every one.
