Markdown Viewer

Markdown Viewer — Chrome Extension for Reading & Exporting .md Files

Open local and web Markdown as a workspace with folders, notes, diagrams, multiple views, and export.

Available in the Chrome Web StoreGet it from Microsoft Edge
Project Atlas open in Markdown Viewer with its project files, rendered plan, and outline
Project Atlas folder and strategy document in the Markdown workspace
Keep Project Atlas files, decisions, and working plans together.

Open a folder. Move between files.

Browse a folder, switch between Markdown files, and return to recent documents or the exact place you stopped reading.

01Folder tree and fast file switching
02Folder bookmarks and recent documents
03Reading position restored automatically

Technical Markdown, rendered as one document.

Read tables, code, math, callouts, and diagrams in the flow of the document—not as disconnected previews.

01Tables, tasks, footnotes, front matter, and callouts
02Syntax-highlighted code and KaTeX math
03Mermaid, Graphviz, PlantUML, and Vega-Lite
Project Atlas architecture diagram, TypeScript example, and security note rendered together
Architecture, code, and decisions remain part of one readable plan.
Project Atlas open in the Markdown workspaceProject Atlas review notes and annotations connected to the source text
Atlas review notes remain connected to the exact source passage.

Read, search, annotate.

Navigate long documents, search across an entire folder, and keep highlights, underlines, and comments linked to the source.

01Searchable H1–H6 outline
02Search the current document or the whole folder
03Highlights, underlines, and comments with source jumps

One Markdown file. Three connected views.

Read it as a document, understand its structure as a mind map, or present it full screen.

Project Atlas shown as a complete mind map with seven project branches
Mind mapSee the complete Atlas plan and every workstream at a glance.
Project Atlas technical document before opening exportMarkdown Viewer export menu
Move the same document into the format the next task needs.

Export Markdown beyond the browser.

Save the document as HTML, Word, PDF, or a full-length PNG, and export mind maps as SVG, PNG, or JPEG.

01Standalone HTML
02Word and Professional Word
03PDF, full-document PNG, and mind-map images

Choose how Markdown looks.

Match the page to technical notes, academic reading, business reports, or distraction-free reading.

01Document themes for different kinds of work
02Background skins or a local image
03Typography, width, spacing, and light/dark mode
Project Atlas in the default light appearanceProject Atlas with a dark document theme and space background skin
Appearance changes the environment, never the Markdown source.

Open Markdown in your browser

How This Markdown Chrome Extension Works

  1. 01Install Markdown Viewer from the Chrome Web Store or Microsoft Edge Add-ons.
  2. 02For local .md files, enable “Allow access to file URLs” once in the extension details.
  3. 03Open a local file, a folder, or a raw web Markdown URL and use the workspace around it.

Why choose a Chrome extension for Markdown viewing?

A Markdown Chrome extension is useful when .md files already live in repositories, project folders, documentation sites, or browser tabs. Instead of copying source into an online converter or opening a separate editor, Markdown Viewer turns the file you choose into a structured reading workspace in Chrome or Edge. The original document remains Markdown while the browser adds a folder tree, bookmarks, an H1–H6 outline, document and folder search, highlights, underlines, comments, diagrams, math, and export tools around it.

For local files, install the extension and enable the browser’s “Allow access to file URLs” setting once. Then open a .md file directly or choose a folder inside Markdown Viewer to move between related documents. For web files, open a raw Markdown URL; the extension checks that the response is Markdown before replacing the plain-text view. Ordinary web pages are left alone.

This approach keeps the reading workflow close to the source. Core rendering, annotations, recent documents, reading positions, and caches stay on your device. You can read the same file as a document, inspect its heading structure as a mind map, present it full screen, or export it as HTML, Word, PDF, or PNG without rewriting the content. Markdown Viewer is available through the Chrome Web Store and Microsoft Edge Add-ons, so the same workspace works in the two browsers we currently test and support.

Ready when you return.

The workspace remembers the useful parts and stays out of the way.

01

Recent documents

Reopen recent local or web Markdown.

02

Reading memory

Resume near the place you left.

03

Diagram cache

Reuse unchanged diagrams from a local cache.

04

Keyboard shortcuts

Reach common actions from the keyboard.

05

Localized interface

Use the extension and permission guidance in 15 languages.

06

Optional auto-refresh

Reload the current document when its source changes.

In review v1.0.1

Workspace continuity and professional output.

See what’s new
01

Resume where you left off.Restore reading positions and reuse locally cached diagrams.

02

Render and find more.Use Vega-Lite, regex, filters, saved searches, and CSV export.

03

Shape the page and its output.Choose new themes and skins, then create Professional Word and full-document PNG exports.

Your documents stay on your device.

No account or upload required. Your documents, annotations, recent history, and caches stay on your device.

Document processing, annotations, recent-document history, and caches On this device
Preferences Stored by your browser; may sync if browser sync is enabled
Extension account or license key Not required
Extension analytics and tracking Not included
PlantUML, link previews, and remote refresh Optional and user controlled

Open your first Markdown workspace.

Install Markdown Viewer, choose a folder, and start reading. No account required.

Available in the Chrome Web StoreGet it from Microsoft Edge

Questions, answered.

The important product boundaries in plain language.

Does Markdown Viewer upload my local files?

No. Document processing happens locally. Annotations, recent documents, reading positions, saved folder access, diagram caches, and custom backgrounds remain on this device. Preferences are stored by the browser and may sync only when browser sync is enabled.

Can it open local Markdown files?

Yes. Chrome and Edge require the browser’s “Allow access to file URLs” setting. The extension includes localized guidance to the correct extension details page.

What is included during the promotional period?

Every Pro-labelled feature is currently open without an account, payment, or license key. Any future paid model would arrive in a clearly communicated extension update.

What stays free when paid Pro access begins?

The Markdown workspace, folder browser and bookmarks, annotations, outline, core themes and skins, reading memory, diagram rendering and cache, basic search, basic HTML/DOCX/print-PDF export, presentation, and mind-map view remain free.