Gatefold Reader Version 4.1.6 · The Classic Edition · build 1078t

Text size

Font Line spacing Margins Portrait back turn PDF pages Dictionary

Pre-formats the open book at your current text size and one step smaller and larger (A− / A+), for this page layout, so size changes are instant.

What’s new in 4.0

Faster book loading and responsive font changes.
Improved chapter indexing and pagination.
Reading position preserved as background loading finishes.
Refined page turns, textured pages, and thick covers with leather sounds.

Copyright © 2026 Jeffrey Patrick. All rights reserved.
Gatefold Reader’s original code and design may not be copied, modified, redistributed, republished, or used commercially without written permission. Third-party libraries remain subject to their respective licenses.

Gatefold—a reader for folding screens

Gatefold, a book reader built on the Turn.js page-flip library. Load your own .txt, .docx, or .pdf file, or read the built-in sample. Drag a page corner to turn it, use the arrow keys, or the buttons below. Fold for single-page portrait reading, unfold for a two-page spread.