A list of unicode icons that you can use instead of loads of svg markup.
If you don't see anything you like, check out:
http://unicode.org/charts/index.html#symbols
https://symbl.cc/en/unicode/table/
https://www.toptal.com/designers/htmlarrows/
The following icons should render as text and not as emojis. To force text rendering there are a few workarounds, e.g. 'font-family: math;'.
As an aside, we will hopefully get 'font-variant-emoji: text;' css property support.
Info - ⓘ
Warning - ⚠
Prohibited / disabled - TODO find one!
Check marks / ticks - ✓ ✔
X / Close / Cancel - ⮾ ✕ ✖
Common arrows
← → ↔ ↑ ↓ ↕ , ↖ ↗ ↘ ↙ , ⤡ ⤢
Geometric and arrows
◀ ▶
▲ ▼
●
■
□
➤
➣
➟
➠
Stars
★ ☆
Ballot / checkmarks
☐ ☑ ☒