How to Create an Index for a Large PDF Book (Acrobat vs InDesign)
Question details
The user wants to generate an index for a large, two-volume PDF exported from InDesign without having to manually add index markers back into the original source files.
- Product
- Adobe Acrobat
- Device & OS
- not provided
- Scenario
- An author needs to mark index entries directly in an exported PDF book and subsequently generate a full index.
- Observed behavior
- Acrobat provides features for creating a hidden search database (catalog) but lacks a layout engine to automatically generate and format a traditional printed back-of-book index.
Before proceeding, determine whether you need a printed "back-of-book" index (which requires layout software) or a digital "search catalog" to improve PDF search performance.
Use InDesign for a Printed Back-of-Book Index
Because Acrobat is not a layout application, a visually formatted book index with page numbers must be generated in the original authoring software.
While it might seem convenient to bypass the source files, Adobe Acrobat cannot dynamically generate a structured, paginated back-of-book index. This is a layout-specific task that requires Adobe InDesign or your original word processor.
Have the author read through the exported PDF in a PDF reader and use the Highlight or Comment tools to mark words or concepts they want included in the index.
Open the original InDesign document side-by-side with the commented PDF. Manually insert the index markers into the InDesign text based on the author's notes.
In InDesign, open the Index panel (Window > Type & Tables > Index) and click 'Generate Index' to create the formatted pages. Re-export the final PDF once the index is complete.
Create a Searchable PDF Catalog Index in Acrobat
If your goal is strictly to improve search speed across multiple large PDFs rather than printing an index, you can use Acrobat's Catalog feature.
Handle PDF and Document Tasks Easily with WPS Office
While complex typesetting and back-of-book indexing require dedicated publishing software, WPS Office is the perfect lightweight solution for everyday document management. It features a powerful built-in PDF reader for collaborative commenting, and a rich Word processor that can automatically generate document indexes.
- 1. Download and Install: Visit the official WPS website to download the free installation package for your operating system.
- 2. Open your Document or PDF: Launch WPS Office and open your PDF to start adding comments, or open a Word document to generate an index.
- 3. Generate Indexes Easily: In WPS Writer, use the References tab to quickly mark entries and insert a professional index.
Frequently Asked Questions
Can I automatically create a clickable back-of-book index in Acrobat?
No. Acrobat does not have a layout engine to automatically extract words and format them into a traditional alphabetical index with page numbers. This task must be done in the software used to write or layout the book, such as InDesign or Word.
What is the difference between an Acrobat Index and an InDesign Index?
An Acrobat Index (Catalog) creates a hidden search database (.pdx) that speeds up the Ctrl+F/Cmd+F search function across multiple PDFs. An InDesign Index is a visible, formatted section at the end of a book listing keywords and their corresponding page numbers.
How can an author collaborate on an index if they only have the PDF?
The author can use standard PDF commenting and highlighting tools to mark words they want indexed. The designer or typesetter can then review these comments and insert the actual index markers into the source layout file.
