Collapsible Section Generator

Create HTML details/summary blocks that work in GitHub Flavored Markdown. Build collapsible sections for FAQs, long code blocks, or supplementary content.

Section 1

Summary (visible when collapsed)

Content (visible when expanded)

Output

<details>
<summary>Click to expand</summary>

Hidden content goes here.

</details>

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About Collapsible Section Generator

Generate collapsible/expandable sections for Markdown. Free online details/summary block builder. This tool runs entirely in your browser — no data is sent to any server. Your content stays private and secure. MarkdownMe provides free, fast, and reliable Markdown tools for developers, writers, and anyone who works with Markdown.