Category score: definition and formula
The same formula inside one of the five categories: access, product data, policies and trust, consistency, action.
Definition
A category with nothing measured shows no number.
Formula
category score = round(100 × Σ (weight × credit) ÷ Σ weight) over the category’s measured checks
The five categories and their checks
Each category score uses only its own checks. Weights are from score model v2.6; a store’s checks add up to 100.
- Access (weight 25): Search and user agents allowed (robots.txt), Is bot protection open to agents?, Product name and price readable without JavaScript, Sitemap, Can the product page be indexed?
- Product data (weight 25): Product structured data (schema.org), Price, currency, availability and URL, Product identity (GTIN/MPN, brand, SKU), Images and description, Reviews and rating, Can variants (size, color) be addressed?
- Policies and trust (weight 20): Machine-readable return policy, Returns page and window, Machine-readable shipping information, Shipping cost and time on the page, Business identity, Legal pages (distance selling, Türkiye)
- Consistency (weight 15): Price consistency, Stock consistency, Currency and language, Return window consistency, Taxes-included wording
- Action (cart and orders) (weight 15): Add-to-cart button in the initial HTML, Is the cart button accessible?, Buying without an account, Order tracking, Site search that works by URL
How to read it
Each category score is the weighted share of that category’s measured checks, from 0 to 100. Categories carry different total weights (see the list above), so the overall score is not their plain average: a category with more measured weight moves it more.
Category scores are not capped. A store with a critical blocker can show a high category score next to an overall score held at 45 or lower; that gap is the cap at work (Critical blocker).
On hotel and service sites, the sector checks sit in the same five categories, and store-only checks leave them as not applicable.
What it does not tell you
- Much, when few checks were measured: a category with one measured check rests on that one result. Look at how many of its checks we could measure.
- Zero: a category with nothing measured shows no number, which is not the same as a score of 0.
- How much an assistant cares about a category: the weights are ours, published in the method.
What moves it
- Fixing the failed or partly passed checks of that category; the heavier the check, the more it moves the category.
- Getting more of its checks measured. In the action category, guest checkout is never measured in the free test, so that category rests on its other checks.
- The Priority order order ranks fixes across all five categories.
Related terms
Readiness score (free test): How 27 checks on your public pages become one number from 0 to 100.