Meet Indexia
Create structured, navigable indexes with AI
Fast, affordable, high-quality indexes.
Superpowered AI book indexing
Indexia is a superpowered AI book indexing tool that makes it easy to create structured, navigable indexes with AI, exportable to Word and XML.
It uses AI to identify important terms throughout your document and surfaces relationships between concepts.
The system groups related ideas, highlights cross-references, and presents you with an editable index—so you can focus on editorial judgment, not manual labor.
Who it's for
Three audiences, one solution
Authors
Create a polished, professional back-of-book index without hiring a large team or learning specialized software.
Upload your manuscript, review the extracted terms and relationships, make your edits, and export a publication-ready index—all in one straightforward workflow.
Professional indexers
A modern tool built to accelerate your workflow without compromising control. Indexia helps you identify terms and relationships faster, but every decision stays in your hands.
Think of it as a skilled assistant that does the heavy lifting—so you can focus on the craft of indexing.
Organizations & researchers
For journalists, agencies, businesses, and researchers dealing with long reports, white papers, or archives—Indexia makes your documents searchable and navigable fast.
Turn messy, unstructured content into organized reference material that your team and stakeholders can actually use.
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 revolutionizing 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 →Frequently Asked Questions
Everything you need to know about Indexia
What is Indexia?
Indexia is an AI-powered tool that helps you create professional back-of-book 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.
Can I see an example index?
Below is an index of On the Origin of Species, which has received zero human editing.
What does Indexia do with my data?
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.
Does Indexia use my data to train its models?
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.
What AI companies does Indexia use?
Currently, we use OpenAI. We plan to add additional model providers in the future.
How much does it cost? What's a "token"?
We charge $0.0015 per token, where one token roughly equals 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.
If you become a Pro Member at $30/month, the rate drops to $0.0005 per token.
What do I get when I pay for a project?
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.
Can I edit my index after it's created?
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
How can I export my index?
You can export your finished index as a Microsoft Word document or as an .IXML file (which is compatible with software like Cindex). Additionally, you can publish a public, read-only link to the index so collaborators or the public can view it without editing access.
