---
title: "Changelog | Once Books"
description: "What’s new in Once Books: new art styles, publishing tools, reader improvements and fixes, with the most recent release first."
source: "https://www.oncebooks.com/changelog"
---

Changelog

# What’s new

What’s new in Once Books: new art styles, publishing tools, reader improvements and fixes, with the most recent release first.

## Print-ready publishing

v0.4.0 · 21 September 2026

- NewExport any book or puzzle set as a print-ready PDF, colour-managed to the PDF/X-4 standard printers expect.
- NewA full Amazon KDP trim catalogue, so you can size a book for the shelf you are publishing to.
- ImprovedEvery export runs a preflight check against the printer’s requirements, and tells you what to fix before you download.

## Dark mode and a more accessible site

v0.3.0 · 19 September 2026

- NewDark mode across the site and the studio.
- ImprovedA full keyboard and screen-reader pass: skip links, focus states, and labelled controls throughout.
- ImprovedEvery shareable page now has its own preview card when you share a link.

## Puzzle books and free generators

v0.2.0 · 17 September 2026

- NewMake and sell puzzle books in Publisher Studio: word search, sudoku, crossword, and 3D spatial puzzles.
- NewFree online generators for word search, sudoku and crossword puzzles, no account needed.

## The first pages

v0.1.0 · 17 August 2026

- NewA shared book preview you can flip through, cover to back.
- NewPer-workspace accounts, roles and secure sign-in.
- ImprovedA warmer, more consistent look across the site and app.