Email repeat ...

A simple, basic, thing to do in TW is to set a favicon: $:/favicon.ico 
<https://tiddlywiki.com/#Setting%20a%20favicon>.

TW is intelligent about favicons. It will dynamically scale a favicon for 
the browser (either type <https://tiddlywiki.com/#ContentType>: image/x-icon 
or image/png).

My question ...

   - What is the *optimal size* (height & width in px; optimal no of 
   colours) for a favicon Tiddler in TW? 

I am thinking of making a set favicon Tiddlers & want to understand more 
about how TW works on them.  

   - Wondering, does TW code do that scaling of simply pass to the browser 
   to do the work?

The docs <https://tiddlywiki.com/#Setting%20a%20favicon> mention that ... 

*On the server, the ServerCommand 
<https://tiddlywiki.com/#ServerCommand> will serve the 
tiddler $:/favicon.ico <https://tiddlywiki.com/#%24%3A%2Ffavicon.ico> at 
the path /favicon.ico.*


   - Would this serve the same resolution favicon as the single-file TW 
   passes to the browser? OR the full resolution of a favicon Tiddler? 

A reason on the last question is some mobile apps will utilise larger 
favicons (though usually with explicit ".png" extension) for screen buttons 
if available.

Best wishes
TT

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