Upload your manuscript. Get a publication-ready, Chicago Manual-compliant index in hours — not weeks.
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“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
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 about an hour; larger books can take up to two.
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.
Whatever your manuscript needs, Indexia handles it.
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 →Case citations, statutes, and legislative references extracted and organized automatically. Proper Bluebook-style formatting with pinpoint citations.
Learn more →Bible references across Protestant, Catholic, Hebrew, and Septuagint canons. Organized in canonical book order with chapter:verse precision.
Learn more →XE field markers inserted directly into your Word document. Generate a live, auto-updating index that stays synchronized with your manuscript.
Learn more →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 →Extract every person, organization, place, and event from your document. Perfect for archival material, government reports, and investigative documents.
Learn more →Everything you need to create a professional index.
A complete back-of-book index formatted to the Chicago Manual of Style, with subentries, cross-references, and proper page ranges.
“I was skeptical that any program could produce an academic quality index... This time I had a manuscript of more than 600,000 words... the result is astonishingly good. All I had to do prior to publication was a light review.”
Philip Alston, Professor of Law, NYU School of Law
Author of: International Human Rights
“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.”
“Indexia is AMAZING and made many connections that I would never have thought about, which I believe will enhance both finding things and browsing as one topic leads a curious person to another. I'm very pleased with the results. All in all a great experience.”
“I've done several rather complicated indexes in archaeology/anthropology/ANE studies and having a tool that simplifies that process is really helpful. I especially appreciate that, because it is web-based, I don't have to house any software on my own laptop and that it is Mac compatible.”
Sarah Burton, freelance copyeditor
Author of: Exploring the Composition of the Pentateuch, Volume 3/1
Eisenbrauns
“I used the earlier version, AI-indexing, and the index it produced gave us a great start and momentum for the fine-tuning process. I'll be interested to use an updated version for my next book.”
Mark van Atten, co-author with Dirk van Dalen and Craig Smoryński
Author of: Intuitionistic Analysis: A Constructive Frame of Mind
Springer
“I was skeptical that any program could produce an academic quality index... This time I had a manuscript of more than 600,000 words... the result is astonishingly good. All I had to do prior to publication was a light review.”
Philip Alston, Professor of Law, NYU School of Law
Author of: International Human Rights
“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.”
“Indexia is AMAZING and made many connections that I would never have thought about, which I believe will enhance both finding things and browsing as one topic leads a curious person to another. I'm very pleased with the results. All in all a great experience.”
“I've done several rather complicated indexes in archaeology/anthropology/ANE studies and having a tool that simplifies that process is really helpful. I especially appreciate that, because it is web-based, I don't have to house any software on my own laptop and that it is Mac compatible.”
Sarah Burton, freelance copyeditor
Author of: Exploring the Composition of the Pentateuch, Volume 3/1
Eisenbrauns
“I used the earlier version, AI-indexing, and the index it produced gave us a great start and momentum for the fine-tuning process. I'll be interested to use an updated version for my next book.”
Mark van Atten, co-author with Dirk van Dalen and Craig Smoryński
Author of: Intuitionistic Analysis: A Constructive Frame of Mind
Springer
Authors trust us with their unpublished manuscripts. We take that seriously.
We use third-party AI systems and pay per query. Your manuscripts are never used to train AI models — ours or anyone else's.
Your documents and indexes are yours alone. We don't sell, share, or monetize your content in any way.
You have full control. Delete your project and all associated files are permanently removed from our servers.
Your data is stored on encrypted servers with industry-standard security, trusted by major enterprises.
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:
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.
We use frontier models from leading AI providers. Every tier runs the same complete indexing pipeline; higher tiers apply a stronger reasoning engine to every curation decision.
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:
Absolutely. Indexia is designed to deliver a production ready index without any human editing, however users also have the option to use the full manual editing platform. You can:
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.
Yes! The Indexia Developer API lets you upload PDFs, run the full 27-phase AI indexing pipeline, download completed indexes, and export in multiple formats — all programmatically.
To get started, create a free account and generate an API key from the developer dashboard.
Indexia specializes in back-of-book indexes. For other document types — legal filings, corporate archives, court exhibits, discovery documents, and other structured records — check out our partner ExhibitX.
ExhibitX uses the same AI-first approach to turn large document sets into navigable, indexed collections.
For customer support, questions, or feedback, please email us at developers@indexia.tech. We typically respond within 24 hours.
Learn more about indexing, AI, and document organization
Learn how AI-powered tools like Indexia can help you create professional book indexes quickly and efficiently.
Read more →Discover how Indexia is changing the way authors and professionals create document indexes.
Read more →Explore how we used Indexia to create a comprehensive, searchable index of every name in the Epstein files.
Read more →
