iTextMaster

Semantic indexing is what iTextMaster builds when you upload a PDF: it analyzes the file, creates an index of its contents, and uses that index so the AI can answer your questions with relevant passages instead of guessing. iTextMaster is an AI PDF tool built on ChatGPT that lets you read documents faster and hold a conversation with them.

The tool has three chat modes.

Document chat is for PDFs you upload.

Web chat lets you ask questions about an online page, and the same text analysis and summarization applies there, so a long article can be reduced to its main points without you reading all of it.

Smart chat is the general assistant mode for open questions.

The pitch is simple: you can talk to a PDF or a webpage from wherever you are, whenever you need to.

That makes iTextMaster most useful for people who deal with long reports, papers or manuals and want a quick summary or a specific answer.

As an AI summarizer, its value depends on how well the index matches your question, so check important answers against the source.