Update favicon to use new Dart logo

[chalin]

cc @kwalrath @JekCharlsonYu

[devoncarew]

@chalin, do you happen to have a favicon already for the new logo?

[devoncarew]

Hmm, I see the favicon contributed here: https://github.com/chalin/site-shared-dartlang/blob/00e7b236fe753fd7b93e73b58ed86bc1008afd0e/src/_assets/images/dart/favicon.ico

is ~100kb. That seems pretty high; that'll effect initial page load for dart web sites.

[chalin]

Let me know which resolutions you'd like in that .ico and I can create one for you. That one was created using:

convert dart/logo/default.png -define icon:auto-resize=128,64,48,32,16 dart/favicon.ico

You might not need that many sizes.

[chalin]

(If there is a general agreement on which sizes are needed, I can change the main favicon.ico file too.)

[devoncarew]

We should likely have a single one we can apply to all dart web properties. From some very casual browsing, we should be good with just 16x16 and 32x32.

I don't know how efficient convert is in terms of the size of the file it produces (I don't know that it isn't either, but we may want to check on it).

[devoncarew]

If there is a general agreement on which sizes are needed, I can change the main favicon.ico file too

Sounds great! I'm happy to use whatever we end up using for dartlang.org.

[chalin]

flutter.io uses a single 64x64 PNG. I'm inclined to do the same for darglang.org. Does that work for you?

[devoncarew]

👍

[chalin]

Done: you can pick up assets from, e.g., https://github.com/dart-lang/site-www/pull/835/files.

[devoncarew]

Thanks!