Markdown Previewer

A Markdown previewer renders lightweight text syntax as headings, paragraphs, links, lists, quotes, and code blocks. It helps authors check hierarchy and readability before publishing documentation, release notes, or issue text. Markdown is not one universal language: GitHub Flavored Markdown, CommonMark, and product-specific extensions differ in tables, task lists, HTML, and autolinks.

Test the exact constructs your destination supports and inspect links, raw HTML, code fences, and escaped characters. Treat Markdown supplied by other users as untrusted input; rendering it safely requires sanitization and a clear policy for HTML, URLs, and embedded media. A preview should not execute arbitrary scripts or fetch private resources simply because they appear in a document. Keep the source and rendered output separate when reviewing a change.

Draft documentation and incident notes can contain internal names, URLs, and snippets that do not belong in a remote editor. Local rendering gives immediate visual feedback and works without an account or upload. The result still needs a final check in the publishing system because its renderer, CSS, and sanitization policy may differ. Use semantic headings and descriptive link text so the finished document remains accessible.