Is it possible to compress PNGs with results similar to TinyPNG/PngQuant in regards to size reduction and quality retention, using vanilla PHP tools like PHP/GD, PHP/Imagemagick and/or intervention/image? TinyPng/PngCompression can sometimes reduce 90% of image size without losing enough quality to be noticed by normal users.
I already tried econding with 70% quality with intervention:
$img = $img->encode('png', 70);
But image size is aways more than the double of what i get compressing it in TinyPng. Installing quantPng in the server isn't always possible or easy, that's why i would like to know if similar results can be obtained without having to install it.