Native macOS App
Peek and Tweak_
Press Space in Finder. See formatted markdown, GitHub-exact rendering, Obsidian vault support, and copyable code blocks... all with native Mac speed.
One-time purchase. No subscription.
Built for how you work
Quick Look Integration
Say goodbye to raw markdown in Quick Look. Peekdown renders your .md files so you no longer have to squint and decipher. You can also copy code snippets - or the entire file - with a single click.
GitHub-Exact Rendering
This is why I created Peekdown. I got tired of trying to proof my READMEs in a writing app, or with an IDE's default formatting; I just wanted to view my markdown how everyone else would view it, but BEFORE I pushed.
Obsidian Vault Support
Browse your Obsidian vault right in the Finder with Quick Look, including full support for callouts, wikilinks, highlights, tags, and embeds. Frontmatter is automatically stripped for a clean preview.
Edit & Annotate
Making changes or fixing mistakes? Peekdown's got your back with an inline editor that supports 20+ languages & syntax highlighting, plus an annotation feature that can even send your notes back to the AI.
Toggleable Checkboxes
Create a task list (or get your bot to do it) and check off each item as you complete it. You can automatically save with each tick (or not), and see your progress right in Quick Look. One of my favorite features.
AI Ready
If you're using AI agents, you may eventually work with llms.txt and humans.txt files, which, despite the .txt extension, are actually markdown and will be rendered just like every other markdown file.
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 |
| Quick Look | |||
| GitHub-exact | Close | (after push) | |
| llms.txt support | |||
| Pin on top | Extensions | ||
| Obsidian syntax | Extensions |
Take a Quick Peek
I love Quick Look, but using it for .md files is a nightmare. I just want a fast way to preview my markdown files and see them just as I would on GitHub. I don't want to open an app just to take a peek, and I'll bet you don't either.
Well now you don't.
Just the Right Amount
Is a full-blown IDE or a journaling app really the right environment for working on a README that contains code samples? And you also want to preview it in GitHub-flavored markdown? Do either of those apps actually scratch that itch?
Peekdown does.
"I guess it does more than just show markdown, but that stuff stays out of your way. Looks good, renders right, and even some syntax highlighting."
— derekplucas, App Store · Feb 2026
One-time purchase. No subscription.