Markdown Previewer

Why check rendered Markdown before you commit it

Markdown looks deceptively simple until a nested list silently breaks, a table column misaligns, or an asterisk inside a sentence turns half a paragraph italic by accident. Those errors are invisible in a plain text editor and only show up once the file renders somewhere — a GitHub README, a static site generator, a CMS field — which is usually a slower feedback loop than you want while you’re actually writing.

This previewer renders as you type, using a parser built specifically for this tool rather than loading a general-purpose library, so common GitHub-flavored constructs — fenced code blocks with language tags, task list checkboxes, tables with column alignment, strikethrough — all show up the way they will on the platform you’re targeting.

What’s supported

Headings (# through ######), bold and italic, strikethrough, inline code and fenced code blocks, blockquotes, ordered and unordered lists with basic nesting, GitHub-style task lists (- [ ] / - [x]), tables with left/center/right alignment, links, images, and horizontal rules.

What’s intentionally left out

Raw HTML embedded in the Markdown source is escaped rather than rendered — the same safe default most Markdown-based platforms use, since rendering arbitrary HTML from a text field is exactly the kind of thing that causes formatting bugs and security issues elsewhere. Footnotes and definition lists aren’t implemented; for those, treat this as a formatting sanity-check tool and confirm the final render on the actual platform (GitHub, GitLab, your static site generator) before publishing anything that depends on them.

A note on nested lists

Indentation-based nesting is one of the most inconsistent parts of Markdown across renderers — some expect 2 spaces per level, others 4, others a tab. This tool follows the common 2-space convention. If a list isn’t nesting the way you expect, try adjusting indentation by increments of two spaces rather than tabs.