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PDFs are blurry when zooming in

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I'm having an issue where PDF files I download are blurry when I zoom in on them in Firefox, but when I use, for example, Edge, it zooms in fine. I've tried reinstalling Firefox, but it didn't make any difference. It happens to all PDFs I've tried.

I'm having an issue where PDF files I download are blurry when I zoom in on them in Firefox, but when I use, for example, Edge, it zooms in fine. I've tried reinstalling Firefox, but it didn't make any difference. It happens to all PDFs I've tried.

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