https://bugzilla.wikimedia.org/show_bug.cgi?id=51370

--- Comment #2 from Eduard Braun <[email protected]> ---
Regarding PNGs:
I'd favor this solution as for the problems discussed in bug 51400. When the
scalers are fixed and optimum settings are found Vips can still be activated
for smaller graphics.


One question regarding JPGs:
You apply sharpening depending on how much they are shrunk. Have you tried to
use a continuous function for the amount of sharpening instead of discrete
values at fixed steps (as also indicated in the source code comment above)?

Without having done any tests I could imagine this would yield more consistent
quality for all sizes.

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