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MDView Chrome extension

MDView renders Markdown files with multiple visual themes, code syntax highlighting, and support for interactive Mermaid diagrams. It's best for developers who work with technical documentation that includes diagrams and code blocks. The catch: it's a viewer, so you'll still need a separate editor to write or modify Markdown.

PriceFree
CategoryDeveloper Tools
Works inChrome, Edge, Brave (desktop)
✓No account needed

Last checked September 26, 2026 against the Chrome Web Store listing · Independent, not affiliated with Google

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Pros

multiple visual themes to choose from
syntax highlighting for code blocks
renders interactive Mermaid diagrams
no account required

Cons

view-only, no editing features
theme customization may be limited compared to full editors

Best for

reading technical documentation with diagrams
developers who want theme choices for Markdown previews
viewing Markdown files with embedded Mermaid charts

Skip it if

editing Markdown content directly
users who only need plain, unstyled Markdown rendering

Key features

themed Markdown rendering
syntax highlighting for code blocks
interactive Mermaid diagram support
GitHub Flavored Markdown compatibility

What MDView does

MDView converts Markdown files into styled HTML with your choice of visual theme, syntax-highlighted code blocks, and support for Mermaid diagrams, which are text-based flowcharts and graphs commonly used in technical docs. This makes it useful for reading documentation that mixes code, prose, and diagrams.

Is MDView safe?

To view local files, MDView needs file URL access, which Chrome disables by default until you turn it on for the extension. It renders Markdown content in your browser rather than sending it to an external service.

Featured in

Best markdown viewer Chrome extensions

MDView: FAQs

Is MDView free?

Yes, MDView is available as a free extension with no listed paid tier.

Is MDView safe to use?

It needs file URL access to read local Markdown files, and it renders content directly in your browser.

How do I use MDView?

Install it, enable file access if needed, then open a Markdown file to see it rendered with your chosen theme.

Does MDView support Mermaid diagrams?

Yes, it renders interactive Mermaid diagrams embedded in Markdown files.

Can I change the theme in MDView?

Yes, MDView offers multiple visual themes for how Markdown content is displayed.

What are MDView alternatives?

Local Markdown Viewer and Markdown Viewer are similar extensions with different theme and feature sets.

Can MDView edit Markdown files?

No, it's a viewer only; you need a separate editor to write or change Markdown content.

Why isn't MDView showing my local file?

Enable 'Allow access to file URLs' for the extension in chrome://extensions, since this is off by default.

Does MDView support syntax highlighting?

Yes, code blocks inside Markdown files are highlighted for readability.

Does MDView support GitHub Flavored Markdown syntax?

Yes, its listing states GitHub Flavored Markdown compatibility, so tables, task lists, and other GFM extensions render correctly alongside standard formatting, syntax-highlighted code, and Mermaid diagrams in the same preview.