I use two systems at work. One of them receives PDF files from clients, and I can view them without any problems. The other system loads the same file, but the display is poor, with poor resolution for the same source file.

I have Gemini Pro, and I decided to share the html_out source code from the inspection. Gemini detected a gross programming error, so I asked them to build a browser extension to modify the website, which ended up being a Tampermonkey script. Simple, functional, and without any programming knowledge.