mushy QR code rendering, not scannable

[niftyberlin]

Switching from PNG to SVG output for the GetQRCode function may be able to solve this. Happy to help with testing!

Forcing hardware acceleration to kick in via CSS might work too, but this approach could very well lead to more problems on low-spec devices than it solves.

Details:

See screenshot – Safari is shown on top (sharper, but only when displaying the diamond loop) and Chrome/Brave's rendering on the bottom (sorta mushy, I've not been able to scan this). Plus, the same mushy rendering shows up in Safari when still images are displayed.

Looks like GPU accelaration is kicking in Safari only, even though my Chrome settings toggle for "Use hardware acceleration, if available" is activated.

Maybe this only happens on macOS (using macOS 11.2.3 here – system and browsers are all up-to-date) – gonna test other configurations, soon.