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psliwa / image-optimizer

Image optimization / compression library. This library is able to optimize png, jpg and gif files in very easy and handy way. It uses optipng, pngquant, pngcrush, pngout, gifsicle, jpegoptim and jpegtran tools.
MIT License
909 stars 141 forks source link

PNG with Black Background #71

Open marcohanke opened 5 years ago

marcohanke commented 5 years ago

I'm using Image-Optimizer within an own addon and everytime i try to optimize an transparent png it gets a black background. Do you have an Idea?

Oanko commented 3 years ago

it's the natural for transparent background png, due to compression it turns into black background png.... 😊