Prevent PDF Viewer on Download by Morpheus0x

Prevents a new tab from opening after downloading a PDF and optionally shows a `Save As...` window to choose where to save the PDF.

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About this extension

This extension prevents a new tab from opening after downloading a PDF and optionally shows a `Save As...` window to choose where to save the PDF.

Due to changes in Firefox how PDF files are handled, any downloaded PDF will instantly open in a new tab by default. This extension restore how PDFs were handled before Firefox 98.0.

This extension works nearly 100%, the only issue is with PDF "downloads" directly from a web application that uses blob to store the PDF before downloading it. In this case only the opening of a new tab with the PDF Viewer is prevented, since there isn't an actual http request that can be intercepted.

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Release notes for 1.1

This extension restores the previous Firefox behavior by nearly 100%.
Downloading a PDF completely prevents a new tab with the PDF Viewer to open and optionally shows a `Save As...` dialog.
Implemented a Settings Page for user preference for Save As which also supports setting this via enterprise policy.

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