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Source code editing
and HTML support

Gain full control over the markup in your editor.

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Click the Source button () and update the HTML elements or attributes as you like. You can also style your HTML using inline CSS.

HTML playground

This is a sample paragraph with a data attribute.

Spoiler alert created with a details element!

This demo uses elements such as abbr, article, section, aside, and details.

Responsive column layout

HTML
CSS
JS
Note

  • You can configure the editor to allow only safe elements, preventing insecure HTML. This demo was intentionally configured to support insecure elements such as <script> to showcase our comprehensive HTML support.

  • This demo includes Enhanced Source Code Editing and supports all the Advanced HTML support capabilities available in CKEditor 5.

  • Enhanced Source Code Editing is a Premium feature available in Essential, Professional as well as Custom plans.

Check the source code for this demo.

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