The book trade’s discovery problem starts with its own data

NielsenIQ BookData’s new metadata study gives publishers an awkward sales comparison. In the 2025 UK print data it examined, titles with a long description sold 119% more copies on average than those without, according to The Bookseller’s account on 5 November. That deserves attention. It is not a promise that adding a paragraph will double a book’s sales.

The product record has become part of the shop window. Descriptions, subject categories, edition details and cover images help retailers show a book to the right customer. Readers gain when that information is useful; publishers and their partners carry the cost of keeping it correct. The decision is where incomplete or badly transmitted data is obstructing a sale, before spending on another discovery product.

Metadata is the structured information describing a book. The study joins BookData’s records to BookScan sales for the 100,000 bestselling printed titles of 2025. It compares groups with and without particular information, including keywords, which were associated with 113% higher average sales. This is a selected print-sales population, not a finding about every published book or the effect of changing one field.