WebGL preloader downloaded data size

Unity Engine
1

Hi,
I built a custom preloader for our game that shows the status. The most important, the downloading content status shows 2 big numbers (downloaded/total). For example: 22020096 / 24995709. The whole export is 18.7 MB (19,670,267 bytes). I watched in chrome network developer tools and it downloads only a 6.1 MB file. Firefox seems to work almost fine, it shows 6.7MB (I divided by 1.000.000 to print as MB).
Have anyone used the message in the webgl preloader fileLoader?
And if it is the case, why the difference between the browsers? And what’s with the 25 MB?
Any help is well received.

Thank you!

2

My theory on the 6MB vs 25MB difference is because the gzipped versions of the files (the ones in the compressed folder) are being downloaded and while the total size reported by the preloader is always the total uncompressed size.

No idea why there’s a difference between Firefox and Chrome, or why it reports 25MB instead of 18.7MB though…