In reply to mark k..

Twemoji loads only when needed and does so asynchronously, meaning it loads and runs in parallel with content. The assertion it slows down a site is just incorrect.

I've seen it suggested the inline code be moved to an external file. This would require:
* an extra http request in the header
* the external script would block rendering
* a request header of up to 5K, depending on browser config & cookies.
* a http response header, somewhere between 0.2 and 8Kb.
* the additional delay of making an extra request - call it 100ms to be generous.

All this to load a 1500 byte script. Moving it to an external file really would slow down 25% of the internet.