Minify production model.json and config.json

[mathiasbynens]

https://google.github.io/magika/model/model.json and https://google.github.io/magika/model/config.json are dynamically loaded by the library, but aren’t minified.

File	.json size	.min.json size	.json.gz size	.min.json.gz size
config	9,519 bytes	5,649 bytes	782 bytes	719 bytes
model	71,626 bytes	48,329 bytes	3,722 bytes	3,254 bytes

Minifying the config results in an 8.06% file size decrease of the gzipped bundle, and minifying the config yields a 12.57% file size decrease of the gzipped bundle.

[reyammer]

Thank you; yes it makes sense. We need to rewrite the config management anyways (a lot of repeated information...) and we'll look into minifying these. But I believe the overall impact would be minimal as the pypi package is anyways ~1MB due to the onnx model?

[mathiasbynens]

But I believe the overall impact would be minimal as the pypi package is anyways ~1MB due to the onnx model?

For fully on-device usage I agree it doesn’t matter that much. However, I was trying the JavaScript version of Magika, which seems to load these two files dynamically over the network. In that situation, decreasing their file size would reduce network cost and improve load times.

[reyammer]

oh, gotcha. You are right. I've been primarily developing the python package, and didn't think about the js version... and in this case it is indeed quite relevant. @invernizzi is there a way to tweak your assets generation script to minify the config files?

[gaby]

@mathiasbynens How much smaller does it get using zstd ?