Which markdown flavor does the preview support?

It uses marked with GitHub-flavored markdown defaults: tables, task lists, strikethrough, and fenced code blocks with language tags. Strict CommonMark features still work.

Is the rendered HTML sanitized?

Yes. Output goes through DOMPurify before it is rendered, so arbitrary or malicious attributes from pasted markdown cannot execute.

Does it support mermaid diagrams or math?

Not yet — the previewer focuses on core markdown. Mermaid and KaTeX would significantly increase bundle size and are better handled by dedicated tools.

How does the preview update — is there a render button?

No button. As you type, the right pane updates live. Parsing markdown and rendering a few thousand lines takes only a few milliseconds in a modern browser.

Markdown Previewer

Write markdown on the left, see rendered HTML on the right. Includes syntax highlighting for code blocks.

Loading editor…

How to preview markdown as rendered HTML

Write markdown on the left and see the rendered HTML on the right, with syntax highlighting and sanitized output.

Open the Markdown Previewer
Go to makemytxt.com/markdown-previewer. A sample document loads so you can see the editor and preview in action.
Replace with your own markdown
Type or paste GitHub-flavored markdown: headings, links, lists, images, tables, fenced code blocks, task lists, and blockquotes are all supported.
Watch the preview update
The right pane renders your markdown in real time. Code blocks get syntax highlighting via highlight.js, and the HTML is sanitized by DOMPurify before being inserted.
Copy or download
Use Copy to copy the raw markdown, or Download to save it as a .md file you can commit to a repo or open in any editor.

Frequently asked questions

Which markdown flavor does the preview support?: It uses marked with GitHub-flavored markdown defaults: tables, task lists, strikethrough, and fenced code blocks with language tags. Strict CommonMark features still work.
Is the rendered HTML sanitized?: Yes. Output goes through DOMPurify before it is rendered, so arbitrary <script> or malicious attributes from pasted markdown cannot execute.
Does it support mermaid diagrams or math?: Not yet — the previewer focuses on core markdown. Mermaid and KaTeX would significantly increase bundle size and are better handled by dedicated tools.
How does the preview update — is there a render button?: No button. As you type, the right pane updates live. Parsing markdown and rendering a few thousand lines takes only a few milliseconds in a modern browser.

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