This plugin hasn’t been updated in over 2 years. It may no longer be maintained or supported and may have compatibility issues when used with more recent versions of WordPress.



CodeColorer is the plugin which allows you to insert code snippets into the
post with nice syntax highlighting.

Plugin based on GeSHi library, which supports most languages. CodeColorer has
various nice features:

  • syntax highlighting in RSS feeds
  • syntax highlighting of single line of code (inline)
  • syntax highlighting of code in comments
  • line numbers
  • automatic links to the documentation inserting
  • code block intelligent scroll detection (short code would have short block,
    for long one block height would be fixed and scrollbar would appear)
  • predefined color themes (Slush & Poppies, Blackboard, Dawn, Mac Classic,
    Twitlight, Vibrant Ink, Railscasts)
  • syntax colors customization in CSS file
  • code protect from mangling by WordPress (for example, quotes, double-dashes,
    and others would look just right as you entered)


Thank you all guys, who submitted translations to your language. CodeColorer
is currently available in following languages:

Want to help me with translation? It’s easy!

  1. Install Poedit.
  2. Download codecolorer.pot file.
  3. Click File/New catalog from .pot file and select codecolorer.pop
    you’ve just downloaded.
  4. Enter project name (something like CodeColorer 0.9.9), your name
    and email address, select a language you want to translate to and
    click OK.
  5. Enter a filename like codecolorer-en_EN and click Save.
  6. Translate all strings one by one.
  7. Send me a .po file with a translation to
    Do not forget a link to add to CodeColorer project home page.
  8. Thank you!

To fix existing translation, just open corresponding .po file
from codecolorer/languages folder in Poedit, and add missing or
update existing strings.


If you have any suggestions, found a bug, wanted to contribute a
translation to your language, or just wanted to say “thank
you”,– feel free to email me
Promise, I will answer every email I received.

If you want to contribute your code, see the Development section under
the Other Notes tab.

Supported languages

Here is list of supported by CodeColorer languages: 4cs, abap, actionscript, actionscript3, ada, apache, applescript, apt_sources, asm, asp, autoconf, autohotkey, autoit, avisynth, awk, bash, basic4gl, bf, bibtex, blitzbasic, bnf, boo, c, c_mac, caddcl, cadlisp, cfdg, cfm, cil, clojure, cmake, cobol, cpp-qt, cpp, csharp, css, cuesheet, d, dcs, delphi, diff, div, dos, dot, ecmascript, eiffel, email, erlang, fo, fortran, freebasic, fsharp, gambas, gdb, genero, gettext, glsl, gml, gnuplot, groovy, haskell, hq9plus, html4strict, idl, ini, inno, intercal, io, j, java, java5, javascript, jquery, kixtart, klonec, klonecpp, latex, lisp, locobasic, logtalk, lolcode, lotusformulas, lotusscript, lscript, lsl2, lua, m68k, make, mapbasic, matlab, mirc, mmix, modula3, mpasm, mxml, mysql, newlisp, nsis, oberon2, objc, ocaml-brief, ocaml, oobas, oracle11, oracle8, oxygene, pascal, per, perl, perl6, pf, php-brief, php, pic16, pike, pixelbender, plsql, povray, powerbuilder, powershell, progress, prolog, properties, providex, purebasic, python, qbasic, rails, rebol, reg, robots, rsplus, ruby, sas, scala, scheme, scilab, sdlbasic, smalltalk, smarty, sql, systemverilog, tcl, teraterm, text, thinbasic, tsql, typoscript, vb, vbnet, verilog, vhdl, vim, visualfoxpro, visualprolog, whitespace, whois, winbatch, xml, xorg_conf, xpp, yaml, z80.


Sources of this plugin are available both in SVN and Git:

Feel free to check them out, make your changes and send me patches.
Promise, I will apply every patch (of course, if they add a value to the
product). Email for patches, suggestions, or bug reports:


Syntax coloring is highly customizable: you could change color scheme for all
languages or for specific language. You could find CodeColorer CSS in
wp-content/plugins/codecolorer/codecolorer.css file. To change colors for
all languages edit lines below Color scheme section.

There is simple mapping exists between Textmate color themes and CodeColorer

/* "Slush & Poppies" color scheme (default) */
.codecolorer-container, .codecolorer { color: #000000; background-color: #F1F1F1; }
/* Comment */
.codecolorer .co0, .codecolorer .co1, .codecolorer .co2, .codecolorer .co3, .codecolorer .co4, .codecolorer .coMULTI { color: #406040; font-style: italic; }
/* Constant */
.codecolorer .nu0, .codecolorer .re3 { color: #0080A0; }
/* String */
.codecolorer .st0, .codecolorer .st_h, .codecolorer .es0, .codecolorer .es1 { color: #C03030; }
/* Entity */
.codecolorer .me1, .codecolorer .me2 { color: #0080FF; }
/* Keyword */
.codecolorer .kw1, .codecolorer .kw2, .codecolorer .sy1 { color: #2060A0; }
/* Storage */
.codecolorer .kw3, .codecolorer .kw4, .codecolorer .kw5, .codecolorer .re2 { color: #008080; }
/* Variable */
.codecolorer .re0, .codecolorer .re1 { color: #A08000; }
/* Global color */
.codecolorer .br0, .codecolorer .sy0 { color: #000000; }

Check the codecolorer.css file to get more examples.


  • Ruby syntax highlighting without scrollbars (Vibrant theme).
  • Ruby syntax highlighting with scrollbars (Twitlight theme).
  • Inline code syntax highlighting.
  • Settings page.


How do I can customize CodeColorer CSS rules?

Go to the Options/CodeColorer page in Site Admin and change the
“Custom CSS Styles” option.

I see &lt; instead of < (or other HTML entities like >, &, ") in my code.

You should use [cc escaped="true"] or [cce] in the visual editor when
inserting code into the post.

Does it highlights my code on server or client side?

CodeColorer performs code highlighting on the server, you could see HTML of
the highlighted code in page source.

Is it produces valid XHTML source?

Yes, resulting XHTML is completely valid.

Could my visitors insert their code snippets in comments?

Yes, CodeColorer supports code highlighting in comments using the same syntax,
as you use in your blog posts.

How can I disable syntax highlighting for a particular `` block?

Use <code no_cc="true"> option for your code block.

I have updated the plugin to the newest version and now I keep getting following warnings:

Warning: array_keys() [function.array-keys]: The first argument should be an array in /home/wordpress/wp-content/plugins/codecolorer/lib/geshi.php on line 3599

Remove all files from the wp-content/plugins/codecolorer folder and unpack
an archive with plugin again (thanks to
Anatoliy ‘TLK’ Kolesnick).

How to insert code from an external file?

You can upload this file using WordPress upload or put it somewhere in uploads folder,
and the specify relative path using file="relative/path/to/file" attribute:

[cc_ruby file="test_project/main.rb"][/cc_ruby]

This snippet will insert code from the UPLOADS_DIR/test_project/main.rb file.


0.9.9 (April 28, 2011)

  • Added ability to highlight ranges of lines (thanks to DELTA NOVA).
  • GeSHi updated to (now with Google Go support!).
  • Updated Simplified Chinese translation (thanks to KenSai).
  • Added Hungarian translation (thanks to daSSad).
  • Added Traditional Chinese translation (thanks to Horace Cheng).
  • Added Romanian translation (thanks to Bogdan M. Botezatu).
  • Added file="file" attribute to load code from external files (thanks to Mészáros Márton).
  • Added Slovak translation (thanks to ceco).
  • Added Malay translation (thanks to Shareef Sam).
  • Fix for notice ‘has_cap was called with an argument that is deprecated since version 2.0!’ (thanks to Lenon Marcel).
  • Fixed undefined index warnings (thanks to Lenon Marcel).
  • Added Railscasts theme (thanks to Ankit Ahuja).
  • Fixed Twitlight theme (strings and symbols coloring was broken).

0.9.8 (March 23, 2010)

  • Added an icon to the admin options page.
  • Updated Arabic translation (thanks to Amine Roukh).
  • GeSHi updated to
  • Added ability to highlight specified lines (thanks to DELTA NOVA).
  • Added Czech translation (thanks to Lelkoun).
  • Added Georgian translation (thanks to Nika Chkhikvishvili).
  • Added Persian translation (thanks to Hamed Momeni).
  • Some unit tests added.

0.9.7 (December 19, 2009)

  • Fixed theme="geshi" attribute bug.
  • Added ability to highlight arbitary piece of code from PHP.
  • Use wp_enqueue_style instead of echoing plain HTML.
  • Fixed problem with escaped code blocks, when some entities were not unescaped.
  • Fixed compatibility with WordPress 2.9.

0.9.6 (December 18, 2009)

0.9.5 (August 27, 2009)

  • Added Dutch translation (thanks to Martijn van Iersel).
  • Added Spanish (Argentina) translation (thanks to Diego Sucaria).
  • Added Arabic translation (thanks to Amine Roukh).
  • Fixed bug in Safari 4 caused by text-align=justify in parent container.

You can find complete changelog on the CodeColorer history

Contributors & Developers

CodeColorer is open source software. The following people have contributed to this plugin.


Translate CodeColorer into your language.

Interested in development?

Browse the code or subscribe to the development log by RSS.