What Is Markdown? Live Syntax Guide — Asterive
Learn Markdown in plain language with an editable source and live preview, including every CommonMark, GFM, and Asterive Markdown feature the app supports.
Markdown is a simple way to add headings, emphasis, lists, links, tables, and other structure to readable plain text.
The local playground places editable Markdown source beside the real Asterive preview without uploading or saving the draft as a note.
The guide covers CommonMark paragraphs, headings, emphasis, links, images, lists, quotes, code, references, line breaks, and escapes.
Asterive supports GFM tables, task lists, autolinks, strikethrough, and footnotes plus definition lists, math, Mermaid diagrams, callouts, a generated table of contents, front matter, wiki links, safe HTML, portable attachment links, and right-to-left writing.
Account-dependent examples are labeled and remain inert on the public page, while executable HTML and unsafe URLs are sanitized.