Native macOS App

Markdown is
everywhere now_

AI outputs it. Docs use it. READMEs depend on it.

Peekdown renders markdown exactly like GitHub—with native Mac speed, QuickLook integration, and support for llms.txt AI context files.

Download — $0.99

Less than a coffee. Lifetime updates. No subscription.

Peekdown showing a rendered markdown file

Built for how you work

AI-Ready

llms.txt Support

See exactly what AI assistants learn about your codebase. Preview llms.txt context files with full markdown rendering.

GitHub-Exact Rendering

Stop pushing typos. Tables, task lists, code blocks, strikethrough—rendered exactly like GitHub does it.

QuickLook Integration

Press Space in Finder to preview any markdown instantly. No app launch, no context switch.

Edit Inline

Spot a typo? Fix it right there. Side-by-side editor with synced scrolling—no app switching required.

Pin on Top

Reference docs while you code—no window switching. Keep your preview floating above everything else.

Interactive Checkboxes

Manage todo.md without opening an editor. Toggle checkboxes directly in preview with optional auto-save.

Syntax Highlighting

20+ languages highlighted automatically. Your code snippets look exactly as they should.

Copy Code Blocks

One-click copy on every code block. Grab snippets instantly without selecting text.

Multiple Windows

Open as many files as you need. Each gets its own window with independent state and position.

Light & Dark Modes

Follows your system appearance. Proof your README in the same theme readers will see.

Editor Themes

Eight beautiful themes—Dracula, Monokai, Solarized, One Dark, Nord, and more.

Custom Fonts

Pick your favorite monospace—SF Mono, JetBrains Mono, Fira Code, and more.

Open from anywhere

Drag and drop files onto the app, use ⌘O to open, press Space in Finder for QuickLook, or double-click any .md file. However you work, Peekdown fits in.

Peekdown viewer window — Clean, distraction-free preview

Edit with live preview

Split-view editing with synced scrolling keeps source and preview aligned. Auto-save means you never lose work. Zoom controls let you adjust text size on the fly.

Peekdown split view editor — Side-by-side editing with synced scrolling

Who it's for

Open Source Maintainers

Perfect READMEs, every time

Stop pushing embarrassing typos to public repos. Proof your documentation exactly as GitHub renders it before the world sees.

AI Developers

See what AI sees

Preview llms.txt and CLAUDE.md files with full markdown rendering. Understand exactly what context AI assistants receive.

Documentation Writers

Write and proof in one place

Side-by-side editing with live preview. No more switching between your editor and browser to check formatting.

Students & Learners

Beautiful study notes

View your markdown notes with proper formatting, syntax highlighting, and code blocks rendered beautifully.

Why not just use VS Code?

Or preview in the browser after pushing?

	Peekdown	VS Code	Browser
Download size	~6MB	~100MB+	—
Memory usage	~50MB	~500MB+	Tab soup
Startup time	Instant	Seconds	Push first
QuickLook
GitHub-exact		Close	(after push)
llms.txt support
Pin on top		Extensions

Get Peekdown