Find the gapsin your listing.

Check your images and copy for missing information and field limits.

How we grade

A vision model reads your gallery images and decides which of the seven slots a complete listing needs each one actually fills, and a fixed rubric measures the title, the bullets, the tags and the description against the limits that marketplace publishes. Your score is the share of the points available on that marketplace that you earned, and the letter follows from the score.

The image pass runs on Claude Sonnet 5. Everything after it is arithmetic, so the same listing scores the same every time.

Letters follow the score: A at 90, B at 80, C at 70, D at 60, F below that.

What the points are for

No marketplace has both bullets and tags, so each one is scored over the rows it has and those rows are rescaled to 100. A field a marketplace does not offer is never scored zero.

30 Coverage of the seven slots
One share for each of the seven slots an image actually fills, as the image reader classified it, not as the file was named.
15 Main image
Half for having a product shot on plain white at all, half for the quality the image reader gives it.
15 Infographic and text legibility
Most of it for carrying a feature infographic, the rest for whether the words on your images stay readable at thumbnail size.
15 Lifestyle and scale
The larger share for the product shown in use or in a real setting, the smaller for an image that makes the size explicit.
10 Title
Full marks inside our target length, less when it runs long or thin, nothing when it breaks the length the marketplace publishes.
10 Bullets
The count first, then how many sit inside the length band, then how many lead with the point rather than building up to it.
10 Tags
Etsy only, because Etsy has no bullet field: the share of the tags Etsy allows that are in use, and whether any runs past the per tag limit.
5 Description
Full marks for a description long enough to answer a shopper and inside the field limit, half for one that is thin or over.

What each marketplace is graded against

Marketplace	Title	Bullets	Description	Tags	Source
Amazon	75 characters (Amazon policy since 2026-07-27); Item Highlights 125.	Bullets: 5, each 120 to 220 characters. Amazon caps one at 500.	At least 200 characters (ours). Up to 2000.	No tag field	Amazon Seller Central, product title requirements and product detail page rules
Walmart	Up to 150 characters. We target 75.	Key features: 3 to 10, each 30 to 80 characters.	At least 150 words.	No tag field	Walmart Marketplace Learn, Product Detail Page overview
TikTok Shop	25 to 255 characters. We target 80.	No bullet field	At least 80 characters.	No tag field	TikTok Seller University, Product Detail Pages & Listing Quality Guidelines
Shopify	No published cap. We target 75 characters.	No bullet field	At least 200 characters (ours).	No tag field	Shopify Help Center, product details. Shopify publishes no listing rules, because the store is yours
Etsy	Up to 140 characters. We target 90.	No bullet field	At least 200 characters (ours).	13 tags, each up to 20 characters.	Etsy Help, How to Create a Listing and How to Use Tags to Get Found in Search

The rubric checks completeness and limits. It does not measure sales.