Loses Transparency In PNG Image

[choudhary-ankit]

While attempting to compress a PNG image, it loses its transparency. I have tried specifying the mimeType value as both 'auto' and 'image/png', but in both cases, the PNG image loses its transparency. Can you help fix this issue?

[Ramishscrapper]

I also facing the issue in the png that I cannot compress the png file

[fengyuanchen]

If you set the mimeType option to 'image/png', you may also need to set the strict option to false.

[Kivt]

As mentioned here:

Set the convertTypes option to [] or ''.
Or set the convertSize option to Infinity.