In short: A Markdown previewer renders Markdown syntax — # headings, **bold**, lists, links, tables and code blocks — into formatted HTML as you type.
About Markdown Preview & to HTML
Markdown is the plain-text format behind README files, documentation sites, chat apps and note-taking tools. It is quick to write, but it helps to see the rendered result before you commit, post or publish — especially for tables, nested lists and code fences.
This editor renders GitHub-flavored Markdown (tables, task lists, strikethrough and fenced code) as you type, using the marked library. The preview strips scripts and inline event handlers for safety. When you are happy, copy the generated HTML to paste into a CMS or newsletter, or download it as a standalone HTML file.
How to use Markdown Preview & to HTML
- Type or paste Markdown into the left pane.
- Watch the preview update on the right.
- Press Copy HTML to copy the generated markup.
- Or download a complete
.htmlfile.
Examples
| Name | Value | followed by |---|---| and data rows renders as a proper HTML table.
- [x] Done and - [ ] To do render as checkboxes, just like on GitHub.
Frequently asked questions
Which Markdown flavor is supported?
CommonMark plus GitHub-flavored extensions: tables, task lists, strikethrough and autolinks.
Is the preview safe for untrusted Markdown?
Script tags, iframes and inline event handlers are removed before display, so pasted content cannot run code on this page.
Is my text saved?
No. Nothing is stored or sent; closing the tab discards it. Copy your work before you leave.
Does it support math or diagrams?
Not in this version. LaTeX math and Mermaid diagrams require extra renderers.
Updated November 2026 · Free, no signup · How we build and test tools