透明蓝字
http://www.imathas.com/cgi-bin/mimetex.cgi?\blue\large\displaystyle f(x)=\int_{-\infty}^xe^{-t^2}dt或http://www.imathas.com/cgi-bin/mathtex.cgi?\blue\large\displaystyle%20f(x)=\int_{-\infty}^xe^{-t^2}dt
白底红字
http://www.bytea.net/cgi-bin/mimetex.cgi?\red\opaque%20c=\sqrt{a^2+b^2}
http://www.forkosh.dreamhost.com/mimetex.cgi?\reverse\opaque\LARGE e^x=\sum_{n=0}^\infty\frac{x^n}{n!}
白底黑字
http://www.sitmo.com/gg/latex/latex2png.2.php?z=200&eq=\mathop{\lim}\limits_{n\to\infty}(1%2B\frac{1}{n})^n
生成公式图片的小工具
http://www.sitmo.com/latex(最后一个由此生成)
http://maru.bonyari.jp/texclip/texclip.php
http://www.codecogs.com/components/equationeditor/equationeditor.php(功能最全)
另附UTF-8编码转换工具
http://tool.chinaz.com/Tools/UTF-8.aspx
如果是自己做网页,还可以
<html><body><p>Dividing $x^2+1$ by $y^2$ gives \[\frac{x^2+1}{y^2}\]</p>
<p>The british pound is worth 1.5 US\$</p><script type="text/javascript" src="http://latex.codecogs.com/latex.js"></script></body></html>
<html><body>Here is my first formula<pre lang="latex">\frac{1+sin(x)^2}{x}</pre><code lang="latex">\frac{1+sin(x)^2}{x}</code>
<script type="text/javascript" src="http://latex.codecogs.com/render.js"></script></body></html>