This is a simple JSON minifier implementation that removes whitespaces from a JSON passed on the STDIN and outputs minified JSON on the STDOUT. Minifier does not parse anything but just rather uses simple state machine to remove whitespaces not contained within a string.
It's capable of processing 1Gb/s when reading from tmpfs on a Ryzen 7 CPU.
Compile it with gcc -03 json-minify.c -o json-minify