在线代码美化器和格式化程序

What language?? There are different tools for almost every imaginable programming language, since they all have different syntactic rules and conventions.

Good ol' indent is a nice, customizable, command-line utility to format C and C++ programs.

I've used Quick Highlighter a lot. Works great for a huge list of languages.

It depends of the language, and of the architecture you are using.

For example, in a php platform, you can format almost language with GeSHi

As bluish comments, GeSHi is a generic syntax highlighter, with no beautification feature. It is more used on the server side, and combine it with a beautification tool can be tricky, as illustrated with this GeSHi drupal ticket.

JsonLint is good for validating and formatting JSON.

For PHP, Java, C++, C, Perl, JavaScript, CSS you can try:

http://www.prettyprinter.de/index.php

You can use Perl::Tidy for Perl.

CSS: code beautifier

HTML: HTML Tidy, CleanUp HTML or the general purpose Pretty Diff

Javascript: http://jsbeautifier.org/

PHP: http://beta.phpformatter.com/

SQL: http://dpriver.com/pp/sqlformat.htm

XML: http://chris.photobooks.com/xml/default.htm

Colour all: http://quickhighlighter.com/

Use gist.github.com. There is a multi-language support(java, c, c++, c#, vb, haskell, ruby, javascript, lua, HTML, SQL, Tcl, Perl, JSON, groovy...)

Here is a sample "Generate LiquiBase changeLogs using Groovy"