Live Markdown Previewer, No File Saved

Markdown is deliberately simple to write, but that simplicity hides a real gap: the plain text you type and the formatted result it produces can look meaningfully different, and guessing wrong about spacing, list nesting, or table syntax usually means committing a README or documentation page, checking it on GitHub, and coming back to fix it. This tool closes that gap directly, rendering your markdown live in a split view as you type, so headers, lists, code blocks, tables, and links all appear exactly as they would on GitHub or a documentation site, before you ever commit anything.

Why markdown rendering is less predictable than it looks

Markdown's rules around whitespace and line breaks are stricter than they first appear. A single line break inside a paragraph is usually ignored and treated as a space, while a blank line is what actually starts a new paragraph, a distinction that trips up anyone writing markdown the way they would write a plain text email. List indentation is similarly picky, an item indented with the wrong number of spaces can silently become part of the previous item's paragraph instead of a nested list item. Seeing the rendered result immediately, rather than after a commit and a page reload, is the fastest way to catch these small formatting mistakes before they ship.

GitHub-flavored markdown extensions

Standard markdown covers headers, bold and italic text, links, and basic lists, but most real world markdown, especially anything destined for a GitHub README, relies on extensions layered on top of that base spec. This tool supports the most common ones: tables, built by aligning pipe characters into rows and a separator line; task lists, checkbox items written as - [ ] or - [x]; fenced code blocks marked with triple backticks, useful for showing installation commands or code snippets with their formatting preserved; and strikethrough text using double tildes. These are exactly the features a typical project README leans on most heavily.

Common situations where a live preview genuinely helps

Drafting a project's README before the repository even exists, writing a pull request description that needs a checklist or a code snippet formatted correctly, preparing documentation for a wiki or docs site, or simply checking whether a table you wrote actually has the right number of columns in each row, are all situations where committing blind and checking afterward wastes real time. A live preview turns that into an immediate feedback loop instead, write a line, see exactly how it renders, adjust if needed, all before the content goes anywhere permanent.

Copying the rendered result as HTML

Beyond just previewing, this tool lets you copy the actual rendered HTML output directly, useful when you want to paste formatted content into an email, a CMS that accepts raw HTML, or anywhere else that doesn't natively understand markdown syntax but does understand standard HTML tags. This turns the tool into a lightweight one-way converter as well as a preview, without needing to reach for a separate markdown-to-HTML utility.

Nothing is saved, nothing is uploaded

Rendering happens entirely in your browser using a lightweight markdown parser, nothing you type is sent to a server, saved to a database, or stored anywhere, including your own device. Closing or refreshing the tab clears the content, which is deliberate, this is meant as a quick preview workspace, not a place to draft and store long-term content. If you are writing something you want to keep, draft it in your actual editor or version control and use this tool purely to check how it will render. If your workflow also involves converting between other structured formats, our YAML to JSON Converter and JSON Formatter are part of the same Developer Utilities collection this tool belongs to.