Drop a document, preview it on your Kobo, edit, export. Always reflowable & editable. Nothing is uploaded.
DOCX, PDF, TXT, Markdown, or images (PNG, JPEG, GIF, WebP). DOCX gives the best result. Stays in this browser.
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Processed only in this browser — nothing was uploaded to a server.
Preview only. Line breaks can still vary with Kobo firmware.
Edit or Diff on the same Kobo page. Diff keeps red/green marks while you type.
Undo and redo cover text, lists, and image edits on this view. Page turns are not undo steps. Switching Edit, Diff, or HTML starts a fresh undo stack.
Drop or paste images onto the Kobo page. Select one to resize, position, or drag it to a new location.
Describe meaningful content, including text shown only in the image. For a complex diagram, add its details to the book text.
Backups include the book and settings. Undo history stays in this session.
Profiles use Rakuten Kobo’s published technical specifications for Clara BW, Clara Colour, Libra Colour, Sage, and Elipsa 2E. Screen placement inside the bezel is estimated because Kobo publishes body and display dimensions, not bezel offsets.