An EPUB is a package of linked reading documents. A local text reader can help you inspect and read chapters, but it is not a replacement for every feature of a full ebook application.
Open a DRM-free file
Choose an EPUB you can access legitimately. The reader uses the package manifest and spine to follow chapter order. Encrypted or DRM-protected books are not supported.
Understand the reading view
Pyntic extracts chapter text into a plain reading view. Complex layouts, embedded media, illustrations and interactive content may not be retained. Use a dedicated ebook reader when those elements are essential.
Take traceable notes
Record the book title, chapter and a short supporting passage when appropriate. Do not rely on page numbers from another device: reflowable ebook pagination can vary with font size and screen dimensions.
Keep the original package
Exported notes or extracted text do not replace the original book. Keep the EPUB intact and separate your interpretation from quotations. The local reader does not upload the book to a conversion service.