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How do I open a pdf file in an existing window?

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czuhajster
czuhajster
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I have set Firefox Developer Edition as my default PDF reader. When I want to open a PDF file, it always pops up in a new window, even if another has already been there.

Is there a way to change this default behavior, so that PDF files are opened in an existing window?

I currently run: Firefox Developer Edition, Version 84.0b2

Thanks.

I have set Firefox Developer Edition as my default PDF reader. When I want to open a PDF file, it always pops up in a new window, even if another has already been there. Is there a way to change this default behavior, so that '''PDF files are opened in an existing window'''? I currently run: Firefox Developer Edition, Version 84.0b2 Thanks.