網(wǎng)站建設是指使用標識語言（markup language)，通過一系列設計、建模、和執(zhí)行的過程將電子格式的信息通過互聯(lián)網(wǎng)傳輸，最終以圖形用戶界面（GUI）的形式被用戶所瀏覽。簡單來說，網(wǎng)頁設計的目的就是產(chǎn)生網(wǎng)站。簡單的信息如文字，圖片（GIF，JPEG，PNG）和表格，都可以通過使超文件標示語言、可擴展超文本標記語言等標示語言放置到網(wǎng)站頁面上。
html中的特殊字符下表給出了插入特殊字符到文檔所需要的代碼。有的字符具有自己的記憶名，如注冊商標字符在html中可寫為&reg。在沒有記憶符時，可直接插入其十進制代碼。
 字符 十進制代碼 HTML   描述
"  "  "   Quotation mark
&  &  &   Ampersand
<  &#60;  &lt;   Less than
>  &#62;  &gt;   Greater than
   &#160;  &nbsp;   Non-breaking space
&iexcl;             &#161  &iexcl;   Inverted exclamation
&cent;            &#162  &cent;   Cent sign
&pound;            &#163  &pound;   Pound sterling
¤             &#164  &curren;   General currency sign
&yen;             &#165  &yen;   Yen sign
&brvbar;             &#166  &brvbar;   broken vertical bar
§              &#167  &sect;   Section sign
¨             &#168  &uml;   Di&aelig;resis / umlaut
&copy;            &#169  &copy;   Copyright
&ordf;             &#170  &ordf;   Feminine ordinal
&laquo;               &#171  &laquo;   Left angle quote,
                  &#172  &not;   Not sign
&shy;            &#173  &sny;   Soft hyphen
&reg;            &#174  &reg;   Registered trademark
&macr;            &#175  &macr;   Macron accent
°            &#176  &deg;   Degree sign
±            &#177  &plusmn;  Plus or minus
&sup2;             &#178  &sup2;   Superscript two
&sup3;             &#179  &sup3;   Superscript three
&acute;             &#180  &acute;   Acute accent
&micro;            &#181  &micro;   Micro sign
            &#182  &para;   Paragraph sign
·             &#183  &middot;   Middle dot
&cedil;             &#184  &cedil;   Cedilla
&sup1;             &#185  &supl;   Superscript one
&ordm;             &#186  &ordm;   Masculine ordinal
&raquo;            &#187  &raquo;   Right angle quote
&frac14;            &#188  &frac14;   Fraction one quarter
&frac12;            &#189  &frac12;   Fraction one half
&frac34;            &#190  &frac34;   Fraction three-quarters
&iquest;             &#191  &iquest;   Inverted question mark
&Agrave;            &#192  &Agrave;   Capital A, grave accent
&Aacute;            &#193  &Aacute;   Capital A, acute accent
&Acirc;            &#194  &Acirc;   Capital A, circumflex
&Atilde;            &#195  &Atilde;   Capital A, tilde
&Auml;            &#196  &Auml;   Capital A, di&aelig;resis / umlau
&Aring;            &#197  &Aring;   Capital A, ring
&AElig;            &#198  &AElig;   Capital AE, ligature
&Ccedil;            &#199  &Ccedil;   Capital C, cedilla
&Egrave;            &#200  &Egrave;   Capital E, grave accent
&Eacute;            &#201  &Eacute;   Capital E, acute accent
&Ecirc;            &#202  &Ecirc;   Capital E, circumflex
&Euml;            &#203  &Euml;   Capital E, di&aelig;resis / umlau
&Igrave;             &#204  &Igrave;   Capital I, grave accent
&Iacute;             &#205  &Iacute;   Capital I, acute accent
&Icirc;             &#206  &Icirc;   Capital I, circumflex
&Iuml;             &#207  &Imul;   Capital I, di&aelig;resis / umlau
&ETH;            &#208  &ETH;   Capital ETH, Icelandic
&Ntilde;            &#209  &Ntilde;   Capital N, tilde
&Ograve;            &#210  &Ograve;   Capital O, grave accent
&Oacute;           &#211  &Oacute;   Capital O, acute accent
&Ocirc;            &#212  &Ocirc;   Capital O, circumflex
&Otilde;            &#213  &Otilde;   Capital O, tilde
&Ouml;            &#214  &Ouml;   Capital O, di&aelig;resis/umlau
×            &#215  &times;   Multiplication sign
&Oslash;            &#216  &Oslash;   Capital O, slash
&Ugrave;            &#217  &Ugrave;   Capital U, grave accent
&Uacute;            &#218  &Uacute;   Capital U, acute accent
&Ucirc;            &#219  &Ucirc;   Capital U, circumflex,
&Uuml;            &#220  &Uuml;   Capital U, di&aelig;resis / umlau
&Yacute;            &#221  &Yacute;   Capital Y, acute accent
&THORN;            &#222  &THORN;  Capital Thorn,Icelandic,
&szlig;            &#223  &szlig;   German sz
à             &#224  &agrave;   Small a, grave accent
á             &#225  &aacute;   Small a, acute accent
&acirc;             &#226  &acirc;   Small a, circumflex
&atilde;             &#227  &atilde;   Small a, tilde
&auml;             &#228  &auml;   Small a, di&aelig;resis / umlau
&aring;             &#229  &aring;   Small a, ring
&aelig;            &#230  &aelig;   Small ae ligature
&ccedil;             &#231  &ccedil;   Small c, cedilla
è            &#232  &egrave;   Small e, grave accent
é             &#233  &eacute;   Small e, acute accent
ê             &#234  &ecirc;   Small e, circumflex
&euml;             &#235  &euml;   Small e, di&aelig;resis / umlau
ì             &#236  &igrave;   Small i, grave accent
í             &#237  &iacute;   Small i, acute accent
&icirc;             &#238  &icirc;   Small i, circumflex
&iuml;             &#239  &iuml;   Small i, di&aelig;resis / umlau
&eth;            &#240  &eth;   Small eth, Icelandic
&ntilde;            &#241  &ntilde;   Small n, tilde
ò            &#242  &ograve;   Small o, grave accent
ó            &#243  &oacute;   Small o, acute accent
&ocirc;            &#244  &ocirc;   Small o, circumflex
&otilde;            &#245  &otilde;   Small o, tilde
&ouml;            &#246  &ouml;   Small o, di&aelig;resis / umlau
÷            &#247  &divide;   Division sign,
&oslash;            &#248  &oslash;   Small o, slash
ù            &#249  &ugrave;   Small u, grave accent
ú            &#250  &uacute;   Small u, acute accent
&ucirc;            &#251  &ucirc;   Small u, circumflex
ü            &#252  &uuml;   Small u, di&aelig;resis / umlau
&yacute;            &#253  &yacute;   Small y, acute accetn
&thorn;            &#254  &thorn;   Small thorn, Icelandic
&yuml;            &#255  &yuml;   Small y, di di&aelig;resis / umlaut請注意，如果想在瀏覽器中顯示html代碼，必須用特殊字符代碼替代尖括號以避免瀏覽器對他們解釋成開始和結束標記。大多數(shù)人在上網(wǎng)的時候，都會瀏覽網(wǎng)頁提供給我們的信息。