Product
Wonder Lightbox 9.4 or above, Wonder PDF Embed 1.8 or above
Tutorial
Wonder Lightbox and Wonder PDF Embed use Mozilla PDF.js to display PDF files. By default, PDF.js only supports PDF files that are hosted on the same domain as the webpage. If your PDF files are hosted on Dropbox, PDF.js will not be able to display them and may show an error "An error occurred while loading the PDF".
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