Code Highlighter

This tool adds syntax highlighting to code for pasting into slide decks. It supports highlighting of C/C++ code with Cilk's language extensions for task-parallel programming.

1. Enter the code you want to highlight into the form. A syntax-highlighted version of that code will appear in the output box as you type.
2. Click the Copy button to copy the HTML of the syntax-highlighted version of the code, then paste that HTML into your slide editor: PowerPoint, Keynote, etc.

Use the drop-down menus above the output box to change the programming language and theme used to highlight the code.

If your code uses a custom data type that is not defined in the code snippet, then the highlighter might not properly highlight that type or variables that use it. You can fix this issue by adding a typedef or other statement that defines that type, even if the definition is incomplete.

This tool runs locally in your browser. Nothing you enter is sent to any server or recorded.

This tool uses the Shiki syntax highlighter with two extensions:

1. Custom C/C++ TextMate grammars, based on better-cpp-syntax, that support the Cilk language extension; and
2. A simple, custom semantic highlighter for C and C++.

Found a bug? Please let me know.