外掛標籤
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② 後台搜尋「Saral PDF Preview for WooCommerce」→ 直接安裝（推薦）
原文外掛簡介
Saral PDF Preview lets you attach a PDF file to any WooCommerce product. A configurable button appears on the product page and opens the PDF in a clean, distraction-free lightbox — no download, no print, just a smooth in-browser reading experience powered by PDF.js.
Features
Upload a PDF per product via a dedicated meta box in the product editor.
Configurable button text (default: “Preview Book”).
Choose from 7 hook locations on the product page — a live visual diagram shows exactly where the button will appear.
Protected mode (default): the real PDF URL is never exposed to visitors; the file is streamed through a signed REST endpoint.
Public mode: uses the standard WordPress attachment URL.
Zoom in / zoom out controls inside the lightbox.
Keyboard accessible — press Escape to close.
Responsive layout on mobile.
No tracking, no external requests, no upsells.
