Book Index Examples: How to Create an Effective Index in 2026

A useful book index is a map of ideas, names, and terms to the places where a reader can learn about them. It is not a copy of the table of contents, and it is not a list of every page on which a word appears.

The book index examples below are original. They use a fictional 96-page guide called Small-Space Vegetable Gardens, so every heading, subentry, cross-reference, and locator can be inspected without pretending it came from a published client project.

What a book index should help a reader do

The American Society for Indexing describes an index as a network of terms that gives readers multiple access points to substantive material. Its Indexing Body of Knowledge, checked August 13, 2026, distinguishes intellectual analysis from simple term collection. A useful index therefore answers questions such as:

• Where is the main explanation of balcony irrigation?
• Does the book discuss aphids under pests, insects, or plant damage?
• Which pages compare fabric pots with rigid containers?
• Where does the author connect compost with soil drainage?

A concordance can report every occurrence of the word soil. An indexer decides which discussions are useful, groups them under reader-facing language, and connects related concepts.

Anatomy of a book index entry

Element	Job	Original example
Main entry	The term a reader scans for alphabetically	watering
Locator	The page or range containing substantive treatment	43-47
Subentry	A narrower aspect under a broad topic	watering, vacation systems, 51-53
See reference	Moves the reader from an alternate term to the chosen heading	planters. See containers
See also reference	Points from a complete entry to related material	watering, 43-53. See also drainage
Double posting	Provides another direct access point when readers may use either term	aphids, 72-74 and pests, aphids, 72-74

The locator numbers in this article belong only to the fictional guide. They are not citations to another book.

Index, table of contents, and glossary

These three navigation tools answer different questions. A table of contents follows the book's hierarchy and reading order. It helps a reader find a chapter or named section. A glossary defines selected terms. An index provides alphabetical access to discussions that may be scattered across several chapters.

Suppose the fictional gardening guide has a chapter called Keeping Plants Alive in August. The contents page can send a reader to that chapter. A glossary can define top-dressing. The index can connect the chapter's separate discussions under watering, wind exposure, compost, and pests, even when those words are not section headings.

A book may need all three, one of them, or none. Do not turn chapter titles into an alphabetical list and call it an index. Test the artifact with a question the contents page cannot answer: "Where does this book discuss drainage problems caused by compacted soil?" If the index leads to the relevant treatment quickly, it is doing distinct work.

Complete miniature book index example

Assume the guide covers containers on pages 9-20, soil and compost on pages 21-34, crop selection on pages 35-42, watering on pages 43-53, seasonal care on pages 54-70, and pests on pages 71-82. A compact index might look like this:

Why these entries work

The index does not create an entry for every vegetable named in passing. It gives space to the subjects the fictional guide actually explains. Containers has subentries because its locator span is broad and a reader may want one decision within it. Aphids is double posted because some readers will look under the insect's name and others under pests.

The entry planters. See containers contains no locators. Its only job is to move a reader from an alternate term to the preferred heading. By contrast, watering already has locators and subentries, so its see also reference offers related information without replacing the entry.

The ASI Index Evaluation Checklist, checked August 13, 2026, makes the same distinction: see directs the reader to another term for the concept, while see also points from an existing entry to related material.

Main entries should reflect reader language

An author may call a material a growing medium throughout the manuscript while the intended reader searches for potting mix. An index can bridge that vocabulary:

potting mix. See soil mixes

That cross-reference is useful only if soil mixes exists and contains the promised discussion. Circular references are broken:

• potting mix. See soil mixes
• soil mixes. See potting mix

A reader following either instruction returns to the starting point. Cross-references must be checked after headings are edited, merged, or renamed. Chicago Manual of Style devotes its current indexing chapter to topics including subentries and cross-reference checking; see the official chapter 15 contents, checked August 13, 2026.

A workflow for building the index

1. Define the reader and the locator system

Decide who will use the index and what counts as a locator. A finished print interior usually uses page numbers. A multi-volume reference may need volume and page. A digital edition may need hyperlinks or location targets.

2. Work from stable content

Indexing before the structure settles creates avoidable rework. Section moves, deleted pages, and font changes can shift locators. Start term planning earlier if needed, but verify every locator against the final paginated proof.

3. Mark concepts, not every word

Read for material that answers a reader's question. A single substantive explanation may deserve an entry even if the heading term never appears verbatim. A repeated word may deserve nothing when it occurs only in examples, captions, or passing references.

4. Normalize headings

Choose singular or plural treatment, capitalization, names, abbreviations, and entry syntax. Merge accidental duplicates such as container, containers, and garden containers unless each represents a real distinction.

5. Add subentries and cross-references

Break a long, unhelpful string of locators into aspects the reader can scan. Add alternate-language access where needed. Use cross-references only when the destination exists and saves effort.

6. Edit the index as its own document

Alphabetization, locator accuracy, consistent range treatment, spelling, subentry balance, and page fit all need review. An automatically generated list is a draft input, not the editorial decision.

Creating an index in Microsoft Word

Word can mark main entries, subentries, page ranges, and cross-references with XE fields, then generate and update the index. The current steps are in Microsoft's Create and update an index, checked August 13, 2026.

1. Select the substantive passage or place the cursor at its location.
2. Open References > Mark Entry.
3. Edit the reader-facing main entry instead of accepting the selected wording blindly.
4. Add a subentry or cross-reference when the index structure requires it.
5. Mark the location, then continue through the manuscript.
6. Insert the generated index only after the entries have been reviewed.
7. Update the index after pagination changes, then proof every locator sample again.

Word's Mark All can find repeated text, but repeated text is not the same as repeated substantive discussion. Use it only when every marked occurrence deserves to send a reader there.

How the same index changes for an ebook

A reflowable ebook does not reliably share the fixed page numbers of a print edition. KDP's reflowable text guidelines, checked August 13, 2026, say ebook index page references should link to the relevant paragraph, illustration, table, or chart. Cross-references inside the index should link to their destination entries.

The conceptual work remains the same. The locator implementation changes. The ebook index still needs reader-facing headings, useful subentries, alternate access terms, and tested links.

Book index evaluation checklist

• Every entry points to substantive material.
• Reader vocabulary has an access path.
• Broad entries are divided into useful subentries.
• See references have no competing locators and reach a real heading.
• See also references add related information.
• No cross-reference is circular or orphaned.
• Names, capitalization, plurals, and locator ranges are consistent.
• Print locators match the final proof.
• Ebook locators and cross-references are clickable and tested.
• The index can be scanned comfortably at the final trim size.

If an Automateed book is exported to DOCX for indexing, preserve a clean source copy before adding XE fields or changing pagination. The download workflow is documented in Download DOCX. Indexing begins after the manuscript has a stable structure and ends only after the final print and ebook locators have been checked.