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png2webp with purple fringing

Posted: Fri Mar 26, 2021 3:43 pm
by s01o
a1.png
a1.png (204.06 KiB) Viewed 15755 times
a1.png
use any setting to webp
with purple fringing like 20210326234009.png
20210326234009.png
20210326234009.png (103.03 KiB) Viewed 15755 times

But it's no purple fringing with xnview(100quality)

Before this picture is transparent
Its background is purple
Used this software to replace purple to transparent
I think this may be the reason for the purple fringing after conversion.
When there is any compression, webp will appear purple fringing
The difference is that xnview 100quality compression does not appear purple fringing
ImBatch 100quality compression still has purple fringing

Translated from google
Please forgive if it is difficult to understand

Re: png2webp with purple fringing

Posted: Fri Mar 26, 2021 7:49 pm
by Max
Can you please try this "work-in-progress" build? Use"Lossless" option for webp.
Looks like we fixed the problem. Can you confirm?

Re: png2webp with purple fringing

Posted: Sat Mar 27, 2021 1:47 pm
by s01o
Perfect,extremely thank you.
好人一生平安.