Question 1

How does the book summary generator work?

Accepted Answer

Paste your book text (or chapter-by-chapter). The tool uses extractive summarization — it scores sentences by word frequency (TF), position in the chapter, keyword presence, and cue words ('importantly', 'in conclusion', etc.) — then selects the top sentences for each chapter. It also extracts a premise, key ideas, takeaways, and generates Q&A. Everything runs locally in your browser.

Question 2

Can I summarize a full book at once?

Accepted Answer

Yes. The tool handles long text via hierarchical chunk-and-merge: it splits the text into 5000-character chunks at sentence boundaries, summarizes each chunk, then merges the chunk summaries into a final result. Chapter detection works via patterns like 'Chapter 1', 'Part I', 'Introduction', 'Preface', etc.

Question 3

What depth levels are available?

Accepted Answer

Three: brief (1-2 sentences per chapter), standard (3-5 sentences), and detailed (5-8 sentences with key ideas and Q&A). The brief level is great for quick scanning; detailed is for deep study notes.

Question 4

What extra features does this tool have compared to others?

Accepted Answer

(1) Extractive summarization with TF + position + keyword + cue scoring. (2) Chapter detection (Chapter/Part/Book/Section/Prologue/Epilogue/Preface/Introduction/Foreword/Appendix + all-caps headings). (3) Hierarchical chunk-and-merge for long text (5000-char chunks). (4) Premise extraction. (5) Key ideas extraction. (6) Chapter breakdown. (7) Takeaways. (8) Q&A generation. (9) Outline mode. (10) 3 depth levels. (11) History (localStorage, last 20). (12) Shareable URL. (13) Optional BYO-key LLM enhancement. (14) Markdown/JSON/text export. (15) Reading time estimate.

Question 5

Is my data sent anywhere?

Accepted Answer

No. All summarization runs locally. The only network call is if you paste your own LLM API key and click 'Enhance with LLM' — that request goes directly from your browser to the LLM provider you choose (OpenAI or Anthropic).

AI Book Summary Generator

How to use