How to Write Product Descriptions with AI (Step-by-Step Guide)

AI can write a decent product description in seconds. A description that actually sells — accurate, specific and in your brand’s voice — takes a little more method. Here’s the process we recommend.

Step 1: Collect the facts first

AI cannot invent accurate specifications, and if you let it guess, it will. Before you generate anything, gather for each product:

• What it is and the main material(s)
• Size, weight, dimensions and variants (colours, sizes)
• Who it’s for and the main problem it solves
• What makes it different from similar products
• Care, warranty or safety information that must be correct

If your product data lives in a spreadsheet or your store admin, export it. Most dedicated tools can import it directly.

Step 2: Give the AI your brand voice

Pick two or three existing descriptions you like and give them to the AI as examples. Ask it to match their tone, length and structure. Many dedicated tools have a “brand voice” feature that saves this for every future product.

Step 3: Use a clear prompt

If you’re using a general AI assistant, this template is a good starting point:

Write a product description for [product name] for an online store. Audience: [who buys it]. Tone: [e.g. friendly and practical], like these examples: [paste 2 examples]. Facts (use only these, do not invent anything): [bullet list of facts]. Structure: one short opening sentence about the main benefit, then 3–5 bullet points with key features, then one sentence about care or sizing. Include the keyword [main search phrase] naturally once. Maximum [120] words.

Step 4: Edit before you publish

Treat the output as a first draft. Our quick checklist:

• Every fact matches your product data
• No vague filler (“high-quality”, “perfect for everyone”)
• At least one specific detail only you would know
• The main keyword appears naturally, not stuffed
• It reads well on a phone screen (short paragraphs, bullet points)

Step 5: Scale up to your whole catalog

Once your prompt and brand voice work well on five products, don’t paste products one by one. Dedicated AI product description generators can import your catalog, write in bulk and push the results back to Shopify, WooCommerce and other platforms.

We compared the leading options — including pay-per-product and free choices — in our guide to the best AI product description generators for Shopify.

Common mistakes to avoid

1. Letting the AI invent specs. Always give it the facts and tell it not to add any.
2. Publishing near-identical descriptions. If 300 products share the same sentences, shoppers notice — and so do search engines.
3. Skipping the edit. Five minutes of editing per product is what separates “AI-generated” from “written for my customer”.