Question 1

How does Markdown to HTML conversion work?

Accepted Answer

A Markdown parser reads the source text and produces an abstract syntax tree (AST), which is then serialized to HTML. # heading becomes

, ** bold** becomes , [text](url) becomes , fenced code blocks become
, etc. The exact output depends on which Markdown flavor the parser supports (CommonMark, GFM, etc.). Most parsers are written in the target language — marked.js and markdown-it for JavaScript, Python-Markdown, commonmark.rb for Ruby.

Question 2

Can I use the HTML output from Markdown in emails?

Accepted Answer

Yes, but email HTML has significant constraints. Email clients do not support external CSS,

Question 3

What Markdown extensions does the converter support?

Accepted Answer

This converter supports GitHub Flavored Markdown (GFM) extensions on top of CommonMark: tables (| col |), task lists (- [x]), fenced code blocks with syntax hints (```js), strikethrough (~~text~~), and autolinks. It does not support non-standard extensions like math (LaTeX/KaTeX), footnotes, or custom directives — those require specific Markdown parsers.

Question 4

Is the HTML output safe to render directly in a browser?

Accepted Answer

Raw Markdown-to-HTML conversion can include any HTML that was present in the Markdown source. If the input is user-supplied, you must sanitize the output before inserting it into the DOM to prevent XSS attacks. Use a library like DOMPurify (browser) or sanitize-html (Node.js) after conversion. For trusted content (your own documentation), rendering the raw output is safe. Never use innerHTML with unsanitized user Markdown.

các công cụ miễn phí dành cho lập trình viên web

Bộ chuyển đổi Markdown <> HTML

Markdown

HTML

Trình chuyển đổi Markdown sang HTML hoạt động như thế nào

Công cụ làm gì

Các trường hợp sử dụng phổ biến cho lập trình viên

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