Publ

FAQ

• What is Publ?+

  Publ is a browser-based ePub annotation and review tool for editors, proofreaders, and indie authors. Open an ePub, highlight passages, drop pins on images or page regions, write notes, and export everything as a single file to hand back to whoever edits the book.

• Is Publ free?+

  Yes. The browser tool is free with no account required. Optional paid cloud sync and integrations are planned for later releases.

• Does Publ upload my ePub files?+

  No. Publ is local-first — your ePub stays in your browser's IndexedDB storage on your device. Nothing is uploaded. You can clear browser storage at any time to remove all data.

• How does Publ compare to Calibre or Thorium?+

  Calibre is an ePub library manager and Thorium is a reader; neither targets editorial review. Publ specialises in resilient annotations that survive ePub re-exports — every highlight and pin stores a CFI anchor, surrounding text, chapter reference, and a baked-in screenshot of the anchor block so notes can be re-attached after the source is edited and re-exported.

• Can I export annotations to share with someone else?+

  Yes. Annotations export as a single self-contained JSON notes file (with screenshots embedded) that round-trips between reviewers, plus a one-way Markdown report bundle (.zip with a sibling screenshots folder) for handing changes off to the typesetter who edits the ePub source in Sigil, Vellum, or InDesign.

• Which browsers does Publ support?+

  Chrome, Edge, Firefox, and Safari on desktop. iPad is supported. Phone-sized screens are deferred — reading-review is a desktop workflow.