- A spine sized from your real interior. Opening a cover, or changing its trim size, compiles the interior and takes its page count — rounded up to the even count a printer binds — instead of assuming 300 pages. Trim size, page count and paper stock are saved with the cover and restored when you reopen it, and exporting a print cover whose page count is still a guess asks you first. Groundwood joins white and cream as a paper choice.
- A barcode Amazon accepts. KDP was rejecting covers whose barcode had been antialiased into gray seams and soft edges. The bars are drawn as single shapes and the ISBN box is snapped to pure black on white before conversion, so it scans — and the printed ISBN keeps the hyphenation you entered.
- AI line edits read like an editor’s marks. Suggestions arrive inline as tracked changes you accept or reject one at a time, never a rewritten document — and a full pass costs about half what it did.
- Undo follows your document. Undo belongs to the document now rather than the pane in front of you, so you can wander the binder and still step back through your changes.
August 24–25, 2026
Verkilo 1.3
The cover release: print files built from the book you actually wrote.
