HTML character map

In HTML (and XML), there are 'character entity reference' that are used to represent non-ASCII characters. E.g. the character '→' can be encoded as →, to use in a non-Unicode-compatible text format. These characters will follow the style and size of your font.
For Emoji characters like 🥁 and 😆, check the Emoji character map.

<	lt: less-than sign math
º	ordm: masculine ordinal indicator
¾	frac34: vulgar fraction three quarters (fraction three quarters)
¿	iquest: inverted question mark (turned question mark)
Á	Aacute: Latin capital letter A with acute accent
Ï	Iuml: Latin capital letter I with diaeresis
×	times: multiplication sign math
Ø	Oslash: Latin capital letter O with stroke (Latin capital letter O slash)
æ	aelig: Latin small letter ae (Latin small ligature ae)
ê	ecirc: Latin small letter e with circumflex
Γ	Gamma: Greek capital letter Gamma
Η	Eta: Greek capital letter Eta
Χ	Chi: Greek capital letter Chi
ℵ	alefsym: alef symbol (first transfinite cardinal)[h]
←	larr: leftwards arrow
∇	nabla: del or nabla (vector differential operator)
∠	ang: angle
⊥	perp: up tack (orthogonal to, perpendicular)[o]
⟨	lang: left-pointing angle bracket (bra)[q]
♥	hearts: black heart suit (valentine)[f]

Wikipedia