Some .png images used in pygame may get the warning read as "libpng warning: iCCP: known incorrect sRGB profile". To solve this I have searched and found the solution by using ImageMagick. After installing, single file can be fixed by calling convert <in_img> -strip <out_img>, but to make it fixes every wanted images in path we'll need to modify just a little bit.
Create .bat file contains the following code and place this .bat in the folder that want to be fixed and run to finish it out.
@echo off
ping -n 2 127.0.0.1 > nul
echo this batch will convert ".png" using -strip option from ImageMagick.
echo please make sure you place a batch file in the right location.
ping -n 1 127.0.0.1 > nul
for /f "tokens=* delims= " %%a in ('dir /s/b/a-d "*.png"') do (
echo "%%a"
identify "%%a"
convert "%%a" -strip "%%a"
identify "%%a")
echo finish..
ping -n 2 127.0.0.1 > nul
set /P user_input=Press any key to terminate...