PROJECT NOTES / SEPTEMBER 2026
Launch plan
A clear path from the first build to the final release.
This week
| Step | Owner | Status |
|---|---|---|
| Build the reader | Ana | Complete |
| Review the details | Sam | In review |
| Ship something good | You | Friday |
From build to ship
MacMD Viewer for macOSThe Markdown viewer for Mac.
Ready to read.
A dedicated Markdown viewer for READMEs, specs and the plans your AI agent writes. Preview in Finder. Open as a document. Keep the source untouched.
- 4.4/5 on Trustpilot
- One-time purchase
- 14-day money-back
- macOS 14+
.md From raw text to a clear document.
- Native on macOS
- On Homebrew & Setapp
From a .md file
to a readable document.
Headings, tables, code and diagrams, formatted for reading. Your files stay where you keep them. Compared with other Mac viewers
- 01
Set it up once.
Install MacMD Viewer and enable its Quick Look extension. Set it as your default app for .md files if you want to open them with a double-click.
- 02
Press Space for a preview.
Select a Markdown file in Finder. Quick Look shows the formatted document, including Mermaid diagrams, without opening a reading window.
- 03
Open it for a longer read.
Follow the outline through a long spec, zoom into a diagram and choose a document theme. The source file stays untouched. Quick Look setup guide
assets
launch-plan.md
notes.md
PROJECT NOTES / 01
Launch plan
A little structure. A clear next step.
| Step | Owner | Status |
|---|---|---|
| Build the reader | Ana | Complete |
| Review the details | Sam | In review |
| Ship something good | You | Friday |
Space in Finder. Any .md file, rendered in place.
★★★★★
A quite brilliant markdown viewer for Macs - beautiful design, active development, perfect Claude integration. I've always written in Markdown (prose especially), but these days Claude Code writes even more. Plans, specs, docs. The challenge is ensuring you review all the docs without fighting your IDE or file system to find them.
- Read-only by design
- Quick Look in Finder
- Mermaid diagrams
- Syntax highlighting
- Live reload
- Document outline
- 12 document themes
- Zoom to 300%
- Works offline
- Export to PDF
- Homebrew & Setapp
Mermaid
Diagrams, rendered inline.
Read flowcharts, sequence diagrams and Gantt charts alongside the text that explains them. Mermaid renders inside the document. Mermaid support
ARCHITECTURE.MD
The whole picture.
From a code block to a connected idea.01
Syntax highlighting
Code blocks that read like code.
Syntax highlighting separates keywords, strings and comments, so code examples are easier to follow as you read.
DEPLOY.MD
Ready when you are.
Build, publish, then check that everything is running.
TypeScriptdeploy.ts
export async function deploy() {
const build = await compile()
await publish(build)
return healthcheck()
}Every detail, easier to follow.02
Live reload
The file changes. Your view follows.
Keep a plan open beside Claude Code, Cursor or your editor. When the file is saved, the rendered view reloads so you can read the changes.
## Launch plan
| Step | Owner | Status |
| --- | --- | --- |
| Build the reader | Ana | Complete |
| Review the details | Sam | In review |
| Ship something good | You | Friday |Saved ✓PROJECT NOTES / 01
Launch plan
A little structure. A clear next step.
| Step | Owner | Status |
|---|---|---|
| Build the reader | Ana | Complete |
| Review the details | Sam | In review |
| Ship something good | You | Friday |
Updated from your file ✓
Zoom and themes
Settle into a longer read.
Pinch or ⌘+ from 50% to 300%. Pick from twelve document themes and use the outline to jump between headings. Your Finder preview follows the same theme.
For teams
that work in Markdown.
Share the README, hand over a spec or review a plan from an AI agent. Give every Mac on the team the same way to read it.
Team Pack: $129 for 10 Macs- One key for each Mac.
- All keys arrive in one email. Share them with your team and transfer them when a Mac changes.
- Install your way.
- Use the DMG, Homebrew or Setapp. The same native app on Apple Silicon and Intel.
- Your files stay yours.
- Works offline. Reads documents without changing the source.
WHAT IS MACMD VIEWER?Like Preview.
Like Preview.
For Markdown.
A native Mac app that opens your .md files as readable documents.
Explore the applaunch-plan.mdPLAIN TEXT
- Made for reading.
- Your editor writes. MacMD renders.
The source stays untouched. - At home on your Mac.
- Double-click to open.
Press Space to preview in Finder. - Small. Works offline.
- A 5.4 MB download.
Your files stay on your Mac.
One price.
A reader to keep.
One-time payment. No subscription. Updates within the major version included.
MacMD Viewer for macOS$19.99
one-time · 1 Mac at a time, transferable
If it doesn't fit your workflow, email us within 14 days of purchase for a full refund.
- A dedicated reading window for your .md files
- Quick Look extension for Finder and Spotlight
- Mermaid diagrams and syntax highlighting
- Export to PDF, diagrams and code intact
- Live reload when an agent or editor saves
- Document outline, 12 themes, zoom to 300%
- 1 active Mac, transferable anytime
Secure checkout by Stripe. Taxes may apply.
Questions, answered.
How do I open a Markdown file on my Mac?
Install MacMD Viewer, then open your .md file with it from Finder. To make it your default, select a .md file, choose Get Info, pick MacMD Viewer under Open with, and click Change All. Future double-clicks open your Markdown as a formatted document.
How do I preview Markdown in Finder?
MacMD Viewer includes a Quick Look extension. Enable it in macOS System Settings, select a .md file in Finder and press Space. You get a formatted preview with Mermaid diagrams, in your chosen document theme. Enabling Quick Look and setting your default app are separate steps.
Why pay when free Markdown viewers exist?
A free viewer or your editor’s preview may be all you need. MacMD Viewer brings a dedicated reading window, an outline for long documents, live reload and 12 document themes shared with its Finder preview into one app. It costs $19.99 once. Choose it if that reading workflow is useful to you.
Can I edit files in MacMD Viewer?
No. MacMD Viewer is read-only and never saves changes to your source file. Write in the editor you already use, then read the result here. If you want to write and read in a single app, a Markdown editor is a better fit.
Does it support Mermaid diagrams?
Yes. Flowcharts, sequence diagrams, state diagrams, Gantt charts, all rendered inline. Standard Mermaid syntax, no plugins needed.
Can I read files from Claude, ChatGPT or Cursor?
Yes. Open any Markdown file saved or exported by those tools. Plans, specs and READMEs render with headings, tables, code and supported Mermaid diagrams. When your editor or agent saves changes to an open file, the view reloads.
Is there a free trial?
There is no free trial. You purchase a licence before using the app. If it does not fit your workflow, email us within 14 days of purchase for a full refund.
Can I buy it for a team?
Yes. Packs of 3, 10, 25, 50 or 100 keys ship in one email, one key per Mac, every key transferable from the in-app licence panel. No admin console, no per-seat subscription: distribute the keys however you like. Deploy with the DMG, Homebrew or Setapp.
Which Macs does it support?
MacMD Viewer runs on Apple Silicon and Intel Macs with macOS 14 Sonoma or later. A single licence covers one active Mac at a time and can be transferred to another Mac. Packs are available for multiple Macs.
Can I convert Markdown to PDF on Mac?
Yes. Open the file in MacMD Viewer and choose File > Export as PDF (⇧⌘P). The PDF keeps your theme, Mermaid diagrams, highlighted code, tables, and clickable links, with no watermark. It flows as one continuous page; for paper-sized pages, use Print (⌘P).
Free Markdown tools
Eleven browser tools. Everything runs locally, nothing is uploaded.
- Markdown to PDFClean PDF in the browser
- Markdown to HTMLPaste, copy clean HTML
- PDF to MarkdownExtract text into .md
- Mermaid ViewerPreview, PNG/SVG export
- HTML to MarkdownWeb HTML to Markdown
- Table GeneratorGrid to table syntax
Guides & resources
Get set up, compare viewers and make sense of Markdown.
- The llms.txt guideA readable index for AI tools
- Read Claude Code plans on MacReview the files your agent writes
- Convert Markdown to PDFShare a rendered document
- Markdown Cheat SheetEvery syntax shortcut
- Best Markdown Viewer for MacReaders, editors and Quick Look compared
- Markdown Table SyntaxColumns, alignment, cells
- Mermaid Live Editor GuideFlowcharts and exports
- 15 Best Mac Apps for Developers in 2026 (Tested)Comparison
- 12 Best Mac Apps for Writers in 2026, From Draft to BookComparison
- 9 Best Note-Taking Apps for Mac in 2026 (Plain Markdown)Comparison
Your next .md file.
Ready to read.
$19.99 one-time. 14-day money-back guarantee.
