Book PDF Viewer от 0727hana

Book PDF Viewer replaces Firefox's default scrolling PDF display with a two page, flip able book view, complete with a real page turn animation.
How it works: Navigate to any PDF, or a link that opens one inline, and it opens automatically in the book viewer. You can also click the toolbar icon to paste a PDF URL or pick a local file from your computer.
Controls:

1) Arrow keys, the on screen buttons, or clicking the page edges to turn pages
2) Double click a page to flip back or forward
3) Ctrl or Cmd plus/minus, or Ctrl/Cmd plus scroll, to zoom, and double click the percentage to reset it
4) Fullscreen toggle
5) A button to turn off book view for a specific PDF and fall back to Firefox's normal viewer at any time

Privacy: Everything runs locally in your browser. No data is collected, transmitted, or stored outside your own device.
Credits: Built on Mozilla's PDF.js (Apache License 2.0), included unmodified.