A Spool of Blue Thread

The individual or group credited with creating the content of a product, such as an author for books, a director for films, or a designer for apparel. It represents the creative contributor responsible for the primary intellectual property.

The physical or digital form of a book, such as paperback, hardcover, audio CD, or board book. It indicates how the content is packaged and presented to readers.

The nation in which a book or other published work was first released to the public. It indicates the country where the publication event took place, regardless of the author’s nationality or the publisher’s location.

The pixel dimensions of a display or image, expressed as width by height (e.g., 1920x1080). It indicates how many pixels are used to render the visual content and is commonly used for monitors, TVs, smartphones, cameras, and digital images.

The name of the entity that publishes or distributes the product. It typically refers to a publishing house, imprint, or brand responsible for producing and releasing the item.

A unique identifier assigned to books and other printed publications, typically consisting of 10 or 13 digits. It may include hyphens for readability but is treated as a string value. The ISBN uniquely identifies a specific edition of a title across the publishing industry.

A list of the natural languages in which a product is available or supported.

The calendar year in which the product was first made available to the public or released for sale. It is expressed as a four‑digit number (e.g., 2015) and can be used to filter, sort, or compare products by their release period.

The mass of the product expressed in a standard unit such as grams or kilograms. It represents how heavy the item is and can be used for shipping calculations, handling instructions, or consumer information.