Open an EPUB and turn its chapters into Markdown you can search, annotate and edit.
Drag and drop your files, or choose them from your device.
.epub
EPUB books are extracted on a temporary server, then their working files are deleted; no permanent book library is created.
Choose an EPUB file that you are permitted to process, such as your own manuscript or an accessible research text. Keep the original available for checking chapter order, illustration captions and references that depend on the book’s layout.
Use the live Markdown editor to examine headings, GFM tables and the LLM token count. Follow chapter boundaries and test important note references, then remove irrelevant front matter only when it is not needed to interpret the selected passage.
Download the reviewed Markdown for annotation, documentation or a writing workflow. EPUB extraction runs on a temporary server whose job files are deleted; the resulting text can stay with your local files rather than an online bookshelf.
A book’s declared reading sequence determines how its content should be assembled. Chapter files are not always named alphabetically, so the result follows the publication’s reading order instead of treating a ZIP filename list as a reliable table of contents.
Chapter headings and internal destinations help keep a long manuscript navigable. References may cross chapter files or point to a note later in the text, so test important links after moving the Markdown into a different editor or repository system.
Tables, quotations and lists remain recognizable text structures when the book supplies them. A reflowable publication can still contain complex visual material, including illustrated spreads or fixed-layout pages that need explanatory context beyond a simple text extraction.
Optional illustration bundles keep extracted image files beside their Markdown references. Packaging images separately avoids inflating the editor with encoded data and makes it easier to review the relationship between a figure, its caption and the paragraph that cites it.
An EPUB is designed to let text flow across screens, so its chapter structure is generally more reusable than a printed page layout. Markdown takes that portability further by exposing the wording in a simple editable file. It does not carry every book-specific feature, such as a reader’s location markers or interactive navigation controls. Preserve edition details and source attribution so a quotation can still be traced even when page numbers differ between devices.
For a research assistant or a manuscript review, select a meaningful chapter rather than sending an entire book without a clear question. The token estimate helps you gauge the size of that selection, while the heading structure keeps supporting material understandable. Check footnotes and captions before trimming: a short note may qualify the claim you plan to quote. Processing a book also does not remove copyright or licensing restrictions on redistribution of the resulting text.
An EPUB declares a spine that identifies the intended reading sequence of its chapters. Extraction should use that sequence rather than sorting content files by name, because names such as chapter10 and chapter2 can appear in a misleading alphabetical order. Compare the opening sections with the book’s own contents list, particularly for publications that place notes, appendices or front matter outside the main narrative.
Internal book references are carried into the extracted structure where their destinations can be represented, but they still need checking in the editor where you will use the Markdown. An EPUB can link across files, whereas a single Markdown document may use heading anchors with different naming rules. Confirm important notes and cross-references after export, and add a descriptive label if a numeric reference alone is unclear.
No, EPUB pagination already varies with screen size, font settings and reading application, while Markdown has no fixed page canvas. The conversion preserves a reading structure rather than a page-for-page visual replica. Use chapter or section references when citing the text, or retain a paginated PDF edition if a workflow requires stable page numbers and exact placement of captions or figures.
When supported illustrations are extracted, the image-bundle option places them in a ZIP alongside the Markdown and its relative references. Keep that folder structure intact so another editor can locate the figures. A text-only file cannot embed a complete visual book experience, and decorative or fixed-layout content may need manual review; verify that captions still identify the illustration to which they belong.