# Chat with this book

> The AI reading assistant now works on EPUB as well as PDF: page summaries, custom summaries over a range, self-assessments and free-form questions.

Source: https://publica.la/en/blog/chat-with-this-book

Posted on August 20, 2026 by [Gonzalo Parra](https://publica.la/en/blog/authors/gonzalo-parra) 1 min read

## **The AI reading assistant now works on EPUB — the format most of your catalog lives in.**

**Chat with this book** was a PDF-only companion. It now opens on EPUB too, so the bulk of your catalog gains an assistant — redesigned, as a native part of the reader.

## Why your readers will love it

- **The whole catalog, not a slice of it:** page summaries, custom summaries over a range of pages, self-assessments and free-form questions now work on EPUB exactly as they do on PDF.
- **Always on the right page:** the assistant follows the reader through the book and takes the page they're on as its context — in reflowable and fixed-layout titles alike.
- **Built into the reader:** the panel now opens alongside the table of contents, annotations and flashcards, flush beside the page and painted in whichever reading mode is active.

**Chat with this book is enabled on request.** If your store already has it, your readers get EPUB and the new panel from today — now in nine languages instead of three. If not, contact your Account Manager to switch it on.

Free tools

## Put this into practice

Free, instant, no signup — the same tools our team uses with publishers every week.

[EPUB Checker Validate your EPUB files for structure, metadata, content integrity, and best practices. Get a quality score and detailed issue report. Check your EPUB](https://publica.la/en/tools/epub-checker) [Book Metadata Extractor Upload a PDF or EPUB and get its core metadata normalized to the ONIX 3 standard: title, contributors, publisher, ISBN, BISAC and Thema codes, and keywords. Extract metadata](https://publica.la/en/tools/metadata-extractor) [Book Quality Checker A complete pre-publish audit: epubcheck conformance, accessibility, and the Qualebook production checklist in one report. Run quality check](https://publica.la/en/tools/quality-checker)

[ See all free tools ](https://publica.la/en/tools)

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