Markdown Visualizer support
Write Markdown on the left, read it on the right. Live preview with code, tables, and Mermaid diagrams.
Markdown Visualizer is a split screen Markdown editor for READMEs, docs, changelogs, and notes. You write in the same Monaco editor that powers VS Code, and the preview renders as you type, with GitHub Flavored Markdown, highlighted code blocks, and Mermaid diagrams drawn inline. Resize the panes, expand either one with a shortcut, and pick up where you left off after a refresh. No account, and no backend of its own that stores your writing.
Frequently asked questions
Is my Markdown uploaded anywhere?
There is no backend that stores it. The editor and the preview both run in your browser, and your draft is saved in your browser's IndexedDB. The site does run Microsoft Clarity, whose session recordings can include what is on screen, so keep secrets out of it.
Which Markdown features are supported?
GitHub Flavored Markdown, which covers headings, emphasis, lists, blockquotes, links, images, tables, task lists, and strikethrough, plus syntax highlighted code blocks and Mermaid diagrams.
How do I draw a diagram?
Open a fenced code block with the language set to mermaid and write Mermaid syntax inside it. The preview draws the diagram in place.
What are the keyboard shortcuts?
Cmd or Ctrl and E expands the editor. Cmd or Ctrl, Shift, and P expands the preview. Press the same shortcut again to return to the split view.
Where did my draft go?
Drafts are saved per browser tab. If you closed the tab, its draft is cleaned up shortly after. Clearing site data in your browser also removes it.
Does it work on mobile?
Yes. On narrow screens the editor and preview become two tabs you switch between.
Can I use it offline?
Yes. It installs as a progressive web app and caches itself, so it keeps working without a connection once it has loaded.
Permissions
- None. Markdown Visualizer asks for no camera, microphone, location, notifications, or file system access.
Requirements
- A modern browser. Chrome, Edge, Firefox, and Safari all work.
Privacy
- Your Markdown is rendered in your browser. There is no backend that stores it.
- Drafts are saved in the browser's IndexedDB, one document per tab.
- No account and no sign-up.
- Google Analytics and Microsoft Clarity measure how the site is used. Clarity records sessions, which can include what is visible on screen, so avoid pasting anything sensitive.
Get in touch
Still stuck? Email and you'll get a real reply from a real person, usually within a day.