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Error: Lossy operations are not currently supported #180
The resolution to this error is using an OptiPNG version that supports the option "-strip=all". The earliest version that supports this option is 0.7 (although using that old version is not recommended, because of other defects). The recommended stable versions are either 0.7.4 or 0.7.5.
Thank you very much for using OptiPNG :-)
Okay, works now after recompiling optipng according to
But what happens when I deploy the code on the server? :(