Section Extractor by Heading

Extract a specific named section from a long LLM markdown response.

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Why extract one section

LLMs love to produce long, multi-part documents: a single answer might contain a summary, an analysis, a risk list, and a set of recommendations. Often you only need one of those parts — to paste into a ticket, feed into another prompt, or review on its own. Scrolling and hand-selecting the right block is error-prone, especially when subsections are nested several levels deep.

This tool finds the heading you name and pulls out exactly that section and everything under it.

How it works

The extractor scans the text for ATX markdown headings (lines beginning with # through ######) and builds a list of every heading and its level. When you choose a heading, it captures everything from that heading down to the next heading of the same or higher level. Because a higher-importance heading has fewer # characters, an H2 section automatically includes any H3 and H4 subsections beneath it but stops cleanly at the following H2.

If you type a heading name instead of selecting one, it matches case-insensitively and falls back to a partial match, so you do not have to reproduce the exact wording.

Tips

  • If the dropdown is empty, your response is not using # markdown headings — ask the model to “use markdown headings” and regenerate, or paste the version that has them.
  • Extracting an H1 typically grabs the whole document below it; pick a more specific H2 or H3 to narrow the result.
  • The extracted block keeps its own heading line, so you can paste it straight into another markdown document and it stays well-formed.
  • Chain this with the TOC Generator to first see the document’s structure, then pull out just the section you care about.
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