Special Entities

In the table below, the characters described in the left-most column can in principle be used in a web-page by means of one of the three codes or “references” in the next three columns. In the right-most columns, you can see whether the character is displayed properly in your browser.

Glyphs of the characters are available at the Unicode Consortium; this is where I looked up some of the “references” here.

I also have a page of Greek letters and mathematical symbols.

Character	Entity	Decimal	Hex	Rendering in Your Browser
				Entity	Decimal	Hex
quotation mark = APL quote	"	"	"	"	"	"
ampersand	&	&	&	&	&	&
less-than sign	&lt;	&#60;	&#x3C;	<	<	<
greater-than sign	&gt;	&#62;	&#x3E;	>	>	>
left guillemet		&#171;	&#xAB;		«	«
right guillemet		&#187;	&#xBB;		»	»
Latin small l with bar			&#x142;			ł
Latin capital L with bar			&#x141;			Ł
Latin capital ligature OE	&OElig;	&#338;	&#x152;	Œ	Œ	Œ
Latin small ligature oe	&oelig;	&#339;	&#x153;	œ	œ	œ
Latin capital letter S with caron	&Scaron;	&#352;	&#x160;	Š	Š	Š
Latin small letter s with caron	&scaron;	&#353;	&#x161;	š	š	š
Latin small letter sharp s [= eszett]			&#xDF;			ß
Latin capital letter sharp s [= eszett]			&#x1E9E;			ẞ
Latin capital letter Y with diaeresis	&Yuml;	&#376;	&#x178;	Ÿ	Ÿ	Ÿ
Latin capital letter A with circumflex	&Acirc;	&#194;	&#xC2;	Â	Â	Â
Latin small letter a with circumflex	&acirc;	&#226;	&#xE2;	â	â	â
Latin capital letter C with cedilla	&Ccedil;	&#199;	&#xC7;	Ç	Ç	Ç
Latin small letter c with cedilla	&ccedil;	&#231;	&#xE7;	ç	ç	ç
Latin capital letter G with breve		&#286;	&#x11E;		Ğ	Ğ
Latin small letter g with breve		&#287;	&#x11F;		ğ	ğ
Latin capital letter I	I		&#x49;	I		I
Latin small letter i without dot		&#305;	&#x131;		ı	ı
Latin capital letter I with dot		&#304;	&#x130;		İ	İ
Latin small letter i with dot	i		&#x69;	i		i
Latin capital letter O with umlaut	&Ouml;	&#214;	&#xD6;	Ö	Ö	Ö
Latin small letter o with umlaut	&ouml;	&#246;	&#xF6;	ö	ö	ö
Latin capital letter S with cedilla		&#350;	&#x15E;		Ş	Ş
Latin small letter s with cedilla		&#351;	&#x15F;		ş	ş
Latin capital letter U with circumflex	&Ucirc;			Û
Latin small letter u with circumflex	&ucirc;			û
Latin capital letter U with umlaut	&Uuml;		&#xDC;	Ü		Ü
Latin small letter u with umlaut	&uuml;		&#xFC;	ü		ü
Latin small letter a with macron			&#x101;			ā
Latin small letter e with macron			&#x113;			ē
Latin small letter i with macron			&#x12b;			ī
Latin small letter o with macron			&#x14d;			ō
Latin small letter u with macron			&#x16b;			ū
Latin small letter y with macron			&#x233;			ȳ
modifier letter circumflex accent	&circ;	&#710;	&#x2C6;	ˆ	ˆ	ˆ
small tilde	&tilde;	&#732;	&#x2DC;	˜	˜	˜
en space	&ensp;	&#8194;	&#x2002;
em space	&emsp;	&#8195;	&#x2003;
thin space	&thinsp;	&#8201;	&#x2009;
zero width non-joiner	&zwnj;	&#8204;	&#x200C;	‌	‌	‌
zero width joiner	&zwj;	&#8205;	&#x200D;	‍	‍	‍
left-to-right mark	&lrm;	&#8206;	&#x200E;	‎	‎	‎
right-to-left mark	&rlm;	&#8207;	&#x200F;	‏	‏	‏
en dash	&ndash;	&#8211;	&#x2013;	–	–	–
em dash	&mdash;	&#8212;	&#x2014;	—	—	—
left single quotation mark	&lsquo;	&#8216;	&#x2018;	‘	‘	‘
right single quotation mark	&rsquo;	&#8217;	&#x2019;	’	’	’
single low-9 quotation mark	&sbquo;	&#8218;	&#x201A;	‚	‚	‚
left double quotation mark	&ldquo;	&#8220;	&#x201C;	“	“	“
right double quotation mark	&rdquo;	&#8221;	&#x201D;	”	”	”
double low-9 quotation mark	&bdquo;	&#8222;	&#x201E;	„	„	„
dagger	&dagger;	&#8224;	&#x2020;	†	†	†
double dagger	&Dagger;	&#8225;	&#x2021;	‡	‡	‡
per mille sign	&permil;	&#8240;	&#x2030;	‰	‰	‰
single left-pointing angle quotation mark	&lsaquo;	&#8249;	&#x2039;	‹	‹	‹
single right-pointing angle quotation mark	&rsaquo;	&#8250;	&#x203A;	›	›	›
euro sign	&euro;	&#8364;	&#x20AC;	€	€	€
section sign			&#xA7;			§
pilcrow	&para;		&#xB6;	¶		¶
reversed pilcrow			&#x204B;			⁋
curved-stem pilcrow			&#x2761;			❡
section sign	&sect;			§
ellipsis	&hellip;			…
female sign		&#9792;	&#x2640;		♀	♀
earth		&#9793;	&#x2641;		♁	♁
male sign		&#9794;	&#x2642;		♂	♂

Some symbols taken from UTF-8 Miscellaneous Symbols (w3schools.com).

CO₂ (for cutting and pasting)