“Indexia is AI at its best: a tool that combines superhuman power with uniquely human judgment. It doesn't just take over the task of indexing a book; it enables you to be integral to the process, which is exactly how any self-respecting author would want it to be.”
The AI book indexing software that works.
Upload your manuscript. Get a publication-ready, Chicago Manual-compliant index in minutes — not weeks.
Partner organizations
“Indexia is AI at its best: a tool that combines superhuman power with uniquely human judgment.”
— Rick Altman, self-published author
“It made my experience indexing my forthcoming book much faster and more efficient.”
— Stephen G. Brooks, Dartmouth College
Trusted by authors from
About Indexia
Upload your PDF and Indexia does the rest. Our AI analyzes your entire manuscript, extracts key terms, and builds a complete index automatically. Export to Word or XML—ready for your publisher.
No configuration needed. The AI identifies important concepts, maps relationships between ideas, and formats everything to professional standards. Most indexes are ready in under 30 minutes.
Want to make tweaks? The built-in editor lets you refine anything. But most authors export as-is and move on.
The full index editor — edit terms, view relationships, and see your index in context.
Every type of index, one platform
Whatever your manuscript needs, Indexia handles it.
Subject Index
The standard back-of-book index. AI extracts key terms, maps relationships, generates subentries, and formats everything to Chicago Manual of Style standards.
Learn more →Legal Citations Index
Case citations, statutes, and legislative references extracted and organized automatically. Proper Bluebook-style formatting with pinpoint citations.
Learn more →Scripture Index
Bible references across Protestant, Catholic, Hebrew, and Septuagint canons. Organized in canonical book order with chapter:verse precision.
Learn more →Embedded Index
XE field markers inserted directly into your Word document. Generate a live, auto-updating index that stays synchronized with your manuscript.
Learn more →Public Index
Share your index as an interactive, searchable web page. Every term links back to the source. Ideal for journalists, researchers, and open-access publishers.
Learn more →Name & Entity Index
Extract every person, organization, place, and event from your document. Perfect for archival material, government reports, and investigative documents.
Learn more →Features
Everything you need to create a professional index.
Publication-Ready Output
A complete back-of-book index formatted to the Chicago Manual of Style, with subentries, cross-references, and proper page ranges.
What authors are saying
“I used Indexia and it made my experience indexing my forthcoming book much faster and more efficient. It puts the author—the person who best knows the book—directly at the center of the indexing process to make decisions about what belongs in the index and what does not.”
“A.I. told me to check out Indexia, and I am glad I did. It wasn't expensive at all, especially relative to the hours I saved. You give it instructions and it builds an Index, then you get to fine tune it. And Indexia's team was super-helpful when I had questions. I didn't expect that.”
“I couldn't believe how fast my index was generated. I went through and cross referenced the index with my PDF and everything was accurate. Indexia was beyond useful. My needs were met in a very short turn around time. I'm very impressed with the software and customer support. I highly recommend Indexia.”
“I found [Indexia] through a Google search and am so glad that I did. Indexia is an amazing program... [The] pricing is very reasonable as well.”
“Indexia is AI at its best: a tool that combines superhuman power with uniquely human judgment. It doesn't just take over the task of indexing a book; it enables you to be integral to the process, which is exactly how any self-respecting author would want it to be.”
“I used Indexia and it made my experience indexing my forthcoming book much faster and more efficient. It puts the author—the person who best knows the book—directly at the center of the indexing process to make decisions about what belongs in the index and what does not.”
“A.I. told me to check out Indexia, and I am glad I did. It wasn't expensive at all, especially relative to the hours I saved. You give it instructions and it builds an Index, then you get to fine tune it. And Indexia's team was super-helpful when I had questions. I didn't expect that.”
“I couldn't believe how fast my index was generated. I went through and cross referenced the index with my PDF and everything was accurate. Indexia was beyond useful. My needs were met in a very short turn around time. I'm very impressed with the software and customer support. I highly recommend Indexia.”
“I found [Indexia] through a Google search and am so glad that I did. Indexia is an amazing program... [The] pricing is very reasonable as well.”
Your data stays yours
Authors trust us with their unpublished manuscripts. We take that seriously.
No AI training on your content
We use third-party AI systems and pay per query. Your manuscripts are never used to train AI models — ours or anyone else's.
We never sell your data
Your documents and indexes are yours alone. We don't sell, share, or monetize your content in any way.
Delete anytime
You have full control. Delete your project and all associated files are permanently removed from our servers.
Secure infrastructure
Your data is stored on encrypted servers with industry-standard security, trusted by major enterprises.
Frequently Asked Questions
Everything you need to know about Indexia
Indexia is an AI-powered tool that helps you create professional back-of-book indexes (or other document indexes) quickly and efficiently. It extracts important terms, identifies relationships, and formats your index according to industry standards.
Watch our video demo to see Indexia in action.
Below is an index of On the Origin of Species, which has received zero human editing.
We offer a full refund within 30 days of purchase, provided that:
- You have not yet exported your index
- You understand that requesting a refund will result in the deletion of your project
To request a refund, please contact us at developers@indexia.tech.
We store the data that you upload to and generate with Indexia on our secure servers. You retain full control: you can delete everything at any time by deleting your index project via the user dashboard.
No. We use third-party AI systems and pay per query so that the providers cannot train on your content or use it to improve their own models.
Currently, we use OpenAI. We plan to add additional model providers in the future.
We charge $0.0015 per token, where one token equals roughly one word of your book. For example, indexing a 60,000-word manuscript would cost about $90.
After uploading your PDF (during project creation), you'll receive a cost estimate — and we won't run any AI processing or store anything until you confirm payment.
Once you pay:
- We automatically parse your PDF, extract indexable terms, and infer relationships between them.
- You receive a near-complete index in our viewer, which you can refine manually (adding/deleting terms, merging entries, creating cross-references and sub-entries).
- The result is a polished index you can export or publish.
Absolutely. Indexia is designed to deliver a strong first draft, but also to allow full manual editing. You can:
- Add or delete terms
- Merge similar entries
- Create cross-references or sub-entries
- Use our AI assist to spot potential duplicates or similar terms to speed the process
You can export your finished index in multiple formats: Microsoft Word (.docx), RTF, LaTeX (.tex), or CDXF/IXML (compatible with professional indexing software like Cindex and Sky Index). Additionally, you can publish a public, read-only link to the index so collaborators or the public can view it without editing access.
For customer support, questions, or feedback, please email us at developers@indexia.tech. We typically respond within 24 hours.
Blog
Learn more about indexing, AI, and document organization
How to Index Your Book Using AI
Learn how AI-powered tools like Indexia can help you create professional book indexes quickly and efficiently.
Read more →Introducing Indexia
Discover how Indexia is changing the way authors and professionals create document indexes.
Read more →Every Name in the Epstein Files
Explore how we used Indexia to create a comprehensive, searchable index of every name in the Epstein files.
Read more →