Your file never touches our disk.This tool works entirely in memory and hands the result straight back in the same response — unlike the other tools on this site, there is no 45-minute copy sitting on our server afterwards, because none is ever written.
By ShinobiTools Team · Last updated: August 2026
A PDF you want to paste into a wiki, a README, or any tool that reads Markdown — without every heading turning into a plain paragraph. Text that is clearly larger than the rest of the page becomes a Markdown heading; everything else stays as ordinary text.
A PDF has no real concept of "heading" the way HTML or Markdown does — it only knows where each character sits and how big it is. Comparing each line's size against the page's own median is a simple, reliable way to separate what visually reads as a heading from ordinary paragraph text, without needing a layout model trained on a specific document style.
Tables, multi-column layout and images are not reconstructed — this extracts the text content, not the visual design. For a document that leans heavily on layout, treat the Markdown as a starting point to clean up rather than a finished conversion.
This tool works entirely in memory and hands the result straight back in the same response — there is no copy sitting on our server afterwards, because none is ever written.
Need the plain text instead of Markdown formatting? Image to Text does OCR and returns copyable text without the heading detection. Starting from a scan with no text layer yet? Run it through that tool first. Want a clickable jump-to-heading list inside the PDF itself instead of a separate markdown file? PDF Bookmarks builds that as the file's own table of contents. Want the gist instead of the structure? Summarize PDF reads the same text and writes a short summary instead of headings and lists.
Drop the PDF in. The Markdown appears in the box below, ready to copy or download as a .md file.
By comparing each line's font size to the median size on that page. A line noticeably larger than most of the page's text becomes a # heading; everything else is left as plain text.
No, only a single heading level. It distinguishes "this line stands out as a heading" from "this is body text" — it does not try to guess a full outline hierarchy from font sizes alone.
No. This reads the text content page by page; layout elements like tables, images and multi-column flow are not reconstructed in the Markdown output.
Only if the scan already has a text layer, for example from this site's own OCR tool. A scanned image with no underlying text has nothing for this tool to extract.
25 pages per file. There is no account, no watermark and no daily cap.