Markdown preview
Paste markdown on the left, see the render on the right. Useful for checking that a bug report or doc is well-formed before you ship it.
What this renders
GitHub-flavored markdown: headings, emphasis, lists, links, images, code blocks (inline and fenced), blockquotes, tables, and task lists. Built on the Marked library.
Why this is useful before sharing
Markdown looks plausible until it doesn't. A missing blank line, a heading that needs a space after the hash, an unclosed code block. They all render fine in your head and broken on the page. A live preview catches the formatting bugs before the reader (or the AI coding agent) hits them.
Where the spec ends
The base of modern markdown is CommonMark, which nails down the cases the original spec left ambiguous. GitHub-flavored markdown is CommonMark plus tables, strikethrough, task lists, and autolinks. Most modern tools (this one included) render the GFM dialect.
Writing markdown bug reports?
Cobalt Capture produces clean markdown automatically: H1 for the bug, embedded screenshots, source URL, dictated repro. No formatting to check, no edge cases to worry about. Free.
Start capturing