Chromium won't show PDF's served from your webserver?
If Chromium won't show PDF's inline when served from your webserver, it might be because you followed some security advice and set a "Content-Security-Policy"-header, containing the rule "default-src 'none'".
The symptom is that instead of showing the PDF, Chromium will just show a grey page with a tiny rectangle with rounded corners in the middle.
I fixed it by changing "none" to "self"; but I guess I should figure out which of the more specific policies it is that Chromium needs to be changed.
Some more digging reveals the I can keep "default-src 'none'" if I add "object-src 'self'", and Chromium will then display PDF's inline, so that's what I'm using now.
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