About this Markdown converter
This tool implements a CommonMark subset: headings, paragraphs, ordered and unordered lists, blockquotes, code blocks (fenced), inline code, bold, italic, strikethrough, links, images and horizontal rules. HTML is escaped before processing, so user input is safe to render.
Supported syntax
# Heading through ###### Heading**bold**, *italic*, ~~strike~~, `code`[link](url) and - list, 1. ordered, > quote```language fenced code blocks--- horizontal rule
Privacy
Conversion happens entirely in your browser — your text is never sent to a server.
Frequently asked questions
What is the difference between CommonMark and GitHub Flavored Markdown?
CommonMark (2014) is the formal specification that standardizes the original Markdown, which left dozens of edge cases undefined. GFM is a superset: it adds tables, strikethrough (~~), task lists (- [x]), and autolinks. GFM is the most-used dialect in 2026 on Git platforms. Outside GitHub/GitLab, these extensions are not guaranteed — CommonMark alone remains the most portable.
My Markdown table is not rendering — why?
Tables are part of GFM, not base CommonMark. If your parser is minimalist, it silently ignores them. Check that your tool supports GFM (e.g., gfm: true in marked). Another cause: a malformed separator line — at least 3 dashes per cell, all pipes | present. Test directly in our online Markdown converter to isolate the issue.
Markdown or Notion: which to choose for note-taking in 2026?
Notion excels for team collaboration and visual databases, but its files are proprietary — Markdown export is unreliable. Obsidian or Logseq store your notes as portable .md files, versionable in git, readable without any software. In 2026, Markdown-first tools are gaining ground for personal PKM. If 10-year portability matters, choose Markdown. If real-time collaboration is the priority in a professional context, Notion remains a solid choice.
How do I embed HTML in Markdown without breaking the render?
Leave a blank line before and after your HTML block, and do not nest Markdown inside HTML tags (most parsers won't process it). Security note: if HTML comes from third-party users, always sanitize with DOMPurify or set html: false in markdown-it to prevent XSS injection.
Why has Markdown become the preferred format for LLMs?
Its textual syntax is massively present in training corpora (GitHub, Stack Overflow, open-source docs). It encodes semantic structure (headings, lists, code) without HTML's verbosity or LaTeX's complexity — which models learn to reproduce naturally. In 2026, Markdown has become the lingua franca between humans and AI, used in conversational exchanges and in RAG pipelines alike.
