Markdown Tools

What is Markdown?

Markdown is a way to write formatted text using ordinary characters: # for headings, * or _ for emphasis, - for lists, backticks for code and pipes for tables. The source stays readable as plain text, and a renderer turns it into HTML. That is why READMEs on GitHub and GitLab, documentation sites, wikis, note-taking apps such as Obsidian, static site generators and many chat tools all use Markdown. GitHub Flavored Markdown adds tables, task lists, strikethrough and automatic links to the original syntax. Markdown files usually end in .md or .markdown and can be opened by any text editor, but only a renderer shows them as intended.

Typical tasks

The first task is usually reading. An .md file opened in a plain text editor shows raw symbols instead of a formatted document, and not every computer has a Markdown app installed. The Markdown Viewer renders it GitHub-style, with a table of contents, highlighted code blocks, math formulas and diagrams, and can export the result as a single HTML file.

The second task is writing: a README for a new project, release notes, a blog post or documentation. The Markdown Editor puts the source and a live preview side by side, adds a formatting toolbar for bold, links, lists, tables and code, keeps a draft in your browser so a closed tab does not lose your text, and exports to .md, HTML or PDF.

If you need to check how the exported HTML behaves, open it in the HTML Viewer.

Private by design

Markdown files are rendered locally in your browser. Nothing is uploaded and there is no account. The rendered HTML is sanitized before it is shown, so a document with embedded scripts cannot run code on this page, and diagrams are drawn in an isolated sandbox. Drafts saved by the editor stay in this browser’s local storage on your device and can be deleted at any time.