Markdown Editor — Free Online Markdown Editor with Live Preview

The editor supports CommonMark headings, emphasis, lists, links, images, blockquotes, fenced code blocks and GitHub-flavoured pipe tables. That covers everything you need for READMEs, blog posts, issues, pull request descriptions and technical documentation.

Yes. Copy the rendered HTML straight to your clipboard, download an .html file ready for any browser or save the original .md file for version control. The same content is available in both formats every time you render.

Yes. The live preview renders GitHub-flavoured tables with proper alignment, fenced code blocks with monospaced typography and images via their URL or relative path — exactly what you will see when the Markdown is published.

No. Parsing and rendering happen locally on your machine, so internal documentation, draft blog posts and private notes never leave the tab. Close the page and nothing is retained.

GitHub adds extensions on top of CommonMark, such as task lists, footnotes and autolinking of issue numbers. The editor sticks to the widely-supported subset, so anything that renders here also renders on GitHub, GitLab, Reddit and most static site generators.

Yes. Drop a .md or .markdown file onto the input area and the contents load into the editor for further edits, ready to be re-exported as HTML or Markdown when you are done.

Yes — drop a .md or .markdown file onto the editor, switch to Preview, and the file renders as formatted HTML you can read without installing anything. It works as a quick md viewer / renderer for READMEs and docs straight in the browser.

Yes — toggle Edit, Split or Preview. Split shows your Markdown and the live HTML side by side, Edit gives the full-width writing pane, and Preview is a distraction-free, read-only render of the finished document.

Try sample fills the editor with a short demo document showing headings, bold/italic text, a table and a code fence, so you can see the live preview working before pasting your own content. Hit Clear at any time to wipe the editor back to an empty document and start fresh.

Switch to Split view so you can see the live HTML preview while you type, use Try sample first if you want a reference for table and code-fence syntax, then once it looks right hit Download .html for the rendered page or Download .md to keep the source for version control. Both exports come from the same content, so you never have to render twice.

Yes — the upload area and file picker accept .txt and text/plain files alongside .md and .markdown, so a plain-text draft loads straight into the editor without renaming the extension first. Any Markdown syntax already in the file (headings, lists, links and so on) still renders normally in the preview once it's loaded.

No install needed — this Markdown editor runs in the browser on Windows, macOS and Linux. Open the page, write or drop a .md file, and the live preview renders instantly. Since your document never leaves the browser, it also works as a quick stand-in for a desktop Markdown editor when you are on someone else's machine.

Yes — paste or drop your README.md and the preview renders headings, lists, fenced code blocks, links, images and GitHub-flavoured pipe tables, so you catch broken formatting before committing. Keep in mind GitHub adds a few extras, like task-list checkboxes and automatic heading anchors, that can differ slightly from the local preview.

No — Markdown Editor runs entirely in your browser, so what you paste never leaves the machine you are on. That matters if you are checking something that contains a token, a key or customer data. Closing the tab is enough to clear it.

Pasting into a plain-text field drops bold, italics and styles by design — only the characters survive. That is usually what you want here, since the point is to work on the text itself. Keep the styled original open in its own app and reapply the formatting after you paste the processed text back.

No to both. Markdown Editor is free, your download carries no watermark, and nothing is asked for at the end — there is no point in the flow where you finish the work and then discover it costs money.

No — Markdown Editor runs in the browser on desktop and phone. There is nothing to install, no trial to start, and no license to buy before you can see whether it does what you need. Try it on the file you are actually stuck with rather than a sample.