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'main.dart.js' in the example Flutter KENKEN app linked in the blog post:

Chrome - 359kb

Firefox - 990k

I agree that Chrome is becoming more and more a proprietary channel for Google products, which is probably what its original intent was all along.

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It's actually the very same main.dart.js (dart2js compiler does not have ability to target a specific browser, its output is supposed to work in every supported browser).

359kb is its compressed size, 990k is its uncompressed size.

Firefox shows compressed size in the "Transferred" column and uncompressed size in "Size" column.

In Chrome by default you see compressed size only, but if you click "Use large request rows" then you will see both compressed and uncompressed size.

Use large request rows in Chrome DevTools to see transfer size and uncompressed size: https://developers.google.com/web/tools/chrome-devtools/netw...

Disclosure: DevTools technical writer

That's a very large payload difference indeed!

See other comments, they're actually the same file. The heading names in developer tools are just slightly different.

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