OptiDrop

Markdown Editor & Preview Online — Live HTML Preview Free

Write Markdown on the left, see rendered HTML on the right. Supports headers, bold, italic, links, lists, code blocks, tables, and blockquotes. Copy HTML, download .md file.

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Free Online Markdown Editor with Live Preview

OptiDrop's Markdown Editor lets you write Markdown text and see the rendered HTML preview in real time. The split-pane interface shows your Markdown source on the left and the formatted output on the right. It supports all common Markdown syntax including headers, bold, italic, links, lists, code blocks, tables, blockquotes, and horizontal rules.

Full Markdown Support

The editor uses the popular marked.js library for accurate Markdown parsing. Write headers with #, bold with **, italic with *, links with [text](url), code blocks with triple backticks, tables with pipes, and blockquotes with >. The preview updates instantly as you type.

Copy HTML & Download

Once you are happy with your Markdown, copy the rendered HTML to clipboard with one click. You can also download the raw Markdown as a .md file. This is useful for blog posts, documentation, README files, and any content that needs to be written in Markdown.

100% Browser-Side

Everything runs in your browser. No data is sent to any server. Your Markdown content stays completely private. The editor is fully responsive and works great on mobile devices.

Frequently Asked Questions

Markdown is a lightweight markup language created by John Gruber that uses plain text formatting syntax. It allows you to write formatted text using simple symbols like # for headers, * for bold/italic, and - for lists. Markdown is widely used for documentation, README files, blog posts, and messaging platforms.
To bold text in Markdown, wrap it with double asterisks or double underscores. For example, **bold text** or __bold text__ will render as bold text. You can also use a single asterisk or underscore for italic: *italic text* or _italic text_.
To add a link in Markdown, use the format [link text](URL). For example, [Google](https://google.com) creates a clickable link with 'Google' as the text. You can also add title text: [Google](https://google.com 'Visit Google').
Markdown tables use pipes (|) and hyphens (-). The first row is the header, the second row separates headers from data with hyphens, and subsequent rows are data. Example: | Name | Age | followed by | --- | --- | then | John | 25 |. Colons can align columns: |:---| for left, |---:| for right, |:---:| for center.

Last updated: June 2026