An AI-driven book indexing assistant that works with you, not for you.
Choose your book manuscript (PDF format). Your PDF file is processed locally in your browser. Only extracted text is sent for AI processing and is never stored.
Add instructions and information about your book to help Tandem create an index that is tailored to you and your book's audience.
Tandem creates the first draft of your index. Then you can work within a simple, powerful editor to add, remove, or reorganize entries.
Once you’re done, export your completed index in Microsoft Word, PDF, or other formats compatible with your publisher's requirements.
Traditional indexing takes weeks and costs thousands.
Many authors struggle with the formatting and structure of indexing.
Professional indexers are expensive and often have long waitlists.
Generate and revise a complete index draft in hours, not weeks.
Maintain full control over your index's quality and content.
Save thousands of dollars while creating a professional-quality index.
Your intellectual property is protected by design. Your writing is never used to train any AI model. Your PDF files are processed locally in your browser, and extracted text is only sent temporarily for processing.
Zero Training Data
Tandem Index will never train any AI model on your manuscript content. Your writing remains yours alone.
Local File Processing
Your PDF files are processed entirely in your browser and never uploaded. Pages are sent one by one to Anthropic's servers for processing. We never store your content.
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