The feature-to-benefit conversion
A feature is what the product has. A benefit is what that gives the buyer. "6061 aluminium" is a feature. "Light enough to carry in a laptop bag without noticing it" is the benefit, and it is the sentence that sells the product.
The conversion follows a reliable pattern: take the specification, ask what problem it solves for the buyer, and write that. Six height settings exist so the buyer can get the screen to eye level whether they are at a desk or a counter. That is the sentence.
Some features have no meaningful benefit. When that happens, the honest move is to state the practical consequence rather than manufacture a claim. Buyers notice inflated copy, and it costs you trust on the rest of the page.
The first 200 characters do the work
On most platforms the short description appears under the product title and is often all that shows in a category listing, a search result or a social preview. It is the highest-value copy on the page and the most frequently neglected.
Lead with the single strongest buyer benefit, not with the product name and not with the brand. The shopper already knows what they clicked on. What they need in that window is a reason to keep reading.
Platform differences that change the copy
Shopify and your own store give you the most room. You can use full paragraphs, a specification table and an FAQ block without penalty.
Amazon listings work differently. The bullet points are indexed and read more heavily than the description body, so the feature-to-benefit bullets carry most of the weight. Amazon also has strict rules about claims, guarantees and pricing references, which is why the tool avoids inventing certifications or warranties.
Etsy buyers are shopping for the story and the maker as much as the object. Longer narrative paragraphs perform better there than specification tables.
Social commerce is thumbnail-first. The copy has to work in a two-line preview, which pushes everything into the short description.
Why the tool refuses to invent claims
It will not add a certification, a material, a warranty period, a country of manufacture or an environmental claim that you did not supply. This is not caution for its own sake. In most jurisdictions, unsubstantiated product claims create real legal exposure for the seller, and platforms will remove listings for them.
Where a generated FAQ question cannot be answered from what you supplied, it says so explicitly rather than guessing. That flag is a prompt for you to fill the gap before publishing, not a finished answer.