Markdown Preview & Editor
Write Markdown on the left and see it rendered live on the right — GitHub-flavored, with tables, code blocks, lists and links. Copy or export the HTML. Runs entirely in your browser.
Markdown
Preview
Frequently asked questions
Which Markdown features are supported?
GitHub-flavored Markdown: headings, bold, italic, strikethrough, inline code, fenced code blocks, links, images, unordered/ordered lists, nested lists, blockquotes, horizontal rules, and tables with alignment.
Is my content uploaded?
No. Rendering runs entirely in your browser. Your Markdown never leaves your device, and it is auto-saved locally so you can close the tab and come back.
Can I export the HTML?
Yes. Copy the rendered HTML to your clipboard, or download it as a standalone .html file you can host or email.
About Markdown
Markdown is a lightweight markup language that formats plain text using simple symbols — # for headings, ** for bold, - for list items, and so on. It is the standard for README files, documentation, blog posts, chat, and note-taking apps. This editor renders GitHub-flavored Markdown (GFM), which adds tables, strikethrough, and fenced code blocks to the original syntax.
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About this tool
This free online tool runs entirely in your browser. Your data never leaves your device — there is no server processing, no tracking, and no signup required. Use it as often as you need, on any device.
· Maintained by the Forge Engineering Team
How This Calculator Works
This tool renders Markdown into HTML, following the CommonMark specification with GitHub Flavored Markdown (GFM) extensions including tables, task lists, strikethrough, and fenced code blocks with syntax highlighting. The original Markdown syntax was created by John Gruber in 2004. All rendering occurs client-side in your browser.
Frequently Asked Questions
What is the difference between Markdown and CommonMark?
Markdown (John Gruber, 2004) had ambiguities that led to inconsistent implementations. CommonMark is a standardized, rigorously tested specification that resolves those ambiguities. Most modern platforms (GitHub, Reddit, Discourse) use CommonMark or a superset of it.
Does GitHub Flavored Markdown support tables?
Yes. GFM extends CommonMark with tables (using pipe syntax), task lists (- [x] done), strikethrough (~~text~~), and auto-linking of URLs. Standard CommonMark does not include these features.
How do I add syntax highlighting to code blocks?
Use triple backticks followed by the language name: ```python or ```javascript. GFM-compatible renderers use highlighters like Prism.js or highlight.js to apply syntax coloring. Inline code uses single backticks.
Sources & References
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