Bottom line: the Flutter web version downloads ~10x more data and loads ~10x slower than the main site . On the other hand, the Flutter app compiled with the HTML renderer is comparable in size to the main site (531 KB vs 323KB).
Read moreIs Flutter production ready 2020?
Absolutely Yes , A lot of people have developed and put in production applications with Flutter me also me and it work pretty fine. BUT if you want to put in production Websites done with Flutter i think that you have to wait a little bit since it is not stable.
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