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Latest commit c1e75bd @zeitgeist87 zeitgeist87 Merge pull request #889 from zeitgeist87/FixRegexp
Fix catastrophic backtracking regex issues
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components Fix catastrophic backtracking regex issues
examples Merge pull request #814 from Golmote/prism-kotlin
img Reduce size of image for U.S. Web Design Standards on homepage. (#785)
plugins Add missing prism.js to the documentation of normalize-whitespace
templates Added @Golmote to the footer.
tests Use child processes to run each set of tests, in order to deal with t…
themes Fix Solarized Light theme
vendor Added recursive dependency loader for test page
.editorconfig Added basic .editorconfig
.gitattributes Add .gitattributes to prevent line ending changes in test files
.gitignore Add .DS_Store in .gitignore
.npmignore Added .npmignore
.travis.yml Added travis.yml to run tests in travis Update CHANGELOG and run gulp
CNAME Added CNAME file
LICENSE Fixing to initial copyright year Update
bower.json Update bower.json
code.js Fix broken heading links.
components.js Merge pull request #847 from zeitgeist87/WhitespaceNormalizer
download.html Merge pull request #561 from Golmote/prism-check-all
download.js Fixed components order. In case if one component requires other, the …
examples.html Added some language aliases.
examples.js Fixed repository url in examples
extending.html Updated documentation since the example was not relevant any more
faq.html Moved themes to themes/ folder
favicon.png Added favicon
gulpfile.js Update changelog
index.html Use screenshot instead of text logo for U.S. Web Design Standards on …
logo.svg Optimised logo a bit ;)
package.json Hotfix Release 1.4.1
prefixfree.min.js Styling and docs changes
prism.js Fix catastrophic backtracking regex issues
style.css Use screenshot instead of text logo for U.S. Web Design Standards on …
test-suite.html Test runner: Allow to run tests for only some languages
test.html Improve test drive page usability. Fix #591
utopia.js Commit updated line changes


Prism is a lightweight, robust, elegant syntax highlighting library. It's a spin-off project from Dabblet.

You can learn more on

Why another syntax highlighter?:

Contribute to Prism!

Prism depends on community contributions to expand and cover a wider array of use cases. If you like it, considering giving back by sending a pull request. Here are a few tips:

  • Read the documentation. Prism was designed to be extensible.
  • Do not edit prism.js, it’s just the version of Prism used by the Prism website and is built automatically. Limit your changes to the unminified files in the components/ folder. The minified files are also generated automatically.
  • The build system uses gulp to minify the files and build prism.js. Having gulp installed, you just need to run the command gulp.
  • Please follow the code conventions used in the files already. For example, I use tabs for indentation and spaces for alignment. Opening braces are on the same line, closing braces on their own line regardless of construct. There is a space before the opening brace. etc etc.
  • Please try to err towards more smaller PRs rather than few huge PRs. If a PR includes changes I want to merge and changes I don't, handling it becomes difficult.
  • My time is very limited these days, so it might take a long time to review longer PRs (short ones are usually merged very quickly), especially those modifying the Prism Core. This doesn't mean your PR is rejected.
  • If you contribute a new language definition, you will be responsible for handling bug reports about that language definition.
  • If you add a new language definition, theme or plugin, you need to add it to components.js as well, so that it becomes available to the download build page.

Thank you so much for contributing!!

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