Update: the favicon is now 'XLM', the currency symbol for Lumens:

enter image description here

What do the letters 'sdf' in the old favicon

enter image description here

stand for?

1 Answer 1


The letters 'sdf' stand for Stellar Development Foundation, the organization which maintains the Stellar network. Why they are in lowercase can probably only be answered by the Community Managers (employees of Stack Overflow, who maintain this site).

'Stellar' itself would be too long to fit; the risk of using just 's' is duplicating another (possibly future) site in the Stack Exchange network.

  • 1
    Preferring lower case to upper is a bit of an SE convention that goes way back. Text and prompts throughout the site tend to be all lower case always, unless someone specifies that it needs to be in upper case specifically (think IBM). The convention isn't being followed as much as it used to be, but favicons and site icons tend to be more symbolic than literal, so when I picked the favicon for this site, I was in a lower-case mood... and I went with that. Commented Jan 17, 2018 at 22:22
  • so XLM is not an option? :( Commented Jan 18, 2018 at 12:06
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    @Crosscounter XLM is more consistent with preferring official codes for countries/languages/currencies when they are available. The actual favicon is largely inconsequential, but let me see how hard/easy that is to change after the fact. Commented Jan 18, 2018 at 14:40
  • 1
    Why not use the rocket Stellar logo? Commented Jan 20, 2018 at 8:39
  • @AndreiSavin: Using the Stellar logo may be an option if this site graduates from beta. Provided SE gets permission to use it. Beta sites don't get artwork of that nature.
    – Chenmunka Mod
    Commented Jan 24, 2018 at 12:02

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