MarkView Chrome Extension: Review & How to Use (2026)

MarkView Chrome extension

MarkView opens .md files directly in your browser and renders Mermaid, PlantUML, Graphviz and WaveDrom diagrams plus KaTeX math, then lets you export to Word, HTML or PDF. It's best for developers and writers who read a lot of markdown. The catch: heavier features like the folder browser and mind map view take a moment to learn.

PriceFreemium

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

Pros

processes everything on-device, no accounts or data collection stated

supports Mermaid, PlantUML, Graphviz and WaveDrom diagrams

KaTeX math rendering and syntax highlighting

export to DOCX, HTML, and print-optimized PDF

presentation mode turns a markdown file into slides

works with local files and raw markdown from GitHub, GitLab and doc sites

Key features

renders Mermaid, PlantUML, Graphviz and WaveDrom diagrams
KaTeX math support and syntax highlighting
export to Word (DOCX), HTML and PDF
presentation mode with themes and speaker notes
mind map view of a document's structure
folder browser and full-text search across markdown files
live auto-refresh when the source file changes
annotations that persist across sessions

What MarkView does

MarkView renders markdown files directly in Chrome, turning .md files into formatted pages with headings, tables, and code highlighting. It goes further than basic rendering by drawing Mermaid, PlantUML, Graphviz and WaveDrom diagrams, rendering KaTeX math, and adding a folder browser so you can move between related files without leaving the tab.

MarkView export and presentation features

Beyond viewing, MarkView can export a document to Word, HTML, or a print-optimized PDF, and its presentation mode turns any markdown file into a slide deck with themes, speaker notes and touch navigation. A mind map view shows the document's structure visually and can be downloaded as SVG, PNG, or JPEG.

Is MarkView safe?

MarkView states it processes markdown on your device rather than sending it to a server, and describes no account requirement or data collection. To open local files it needs the file-access permission Chrome shows for extensions, and to render remote raw markdown it needs access to those sites.

MarkView: FAQs

Is MarkView free?

Yes, based on the current listing it's used as a free extension with no separate paid tier described.

How do I use the MarkView extension?

Install it, allow file access if you'll open local files, then open a .md file or raw markdown URL in Chrome to view it rendered.

Does MarkView collect my data?

The listing states it processes everything on your device and describes no accounts or data collection.

Can MarkView render Mermaid diagrams?

Yes, it supports Mermaid along with PlantUML, Graphviz, and WaveDrom diagrams inside markdown files.

Can I export a markdown file with MarkView?

Yes, MarkView can export to Word (DOCX), HTML, and a print-optimized PDF.

Does MarkView support math notation?

Yes, it renders KaTeX math alongside standard markdown formatting.

Can MarkView turn markdown into a presentation?

Yes, its presentation mode converts a markdown document into slides with themes, speaker notes and navigation.

Does MarkView work with GitHub markdown?

Yes, it can render raw markdown served from GitHub, GitLab, and other documentation sites.

How do I open local .md files with MarkView?

Enable 'Allow access to file URLs' for the extension in Chrome's extension settings, then open the file directly.

Does MarkView have a mind map view?

Yes, it can display a document's structure as an interactive mind map, downloadable as SVG, PNG or JPEG.

What are MarkView alternatives?

Markdown Viewer and Markdown Reader are common alternatives with simpler feature sets.