Books and other publications often would benefit from indexing, which is a comprehensive guide to the contents of the work, allowing the text to be more accessible to its readers. While indexers do use computers and a software program to enhance their indexing capabilities, indexer are written by humans.

A trained indexer will read the page proofs of the publication and write an alphabetical list of references based on the terms and concepts explored in the text. The indexer will select, group, and consolidate page references under main headings, subheadings, and cross-references to guide the readers to specific information.

Experience in indexing include books, such as professional development, human development, and training.

Fees for indexing are generally $3-$6 per indexable page.