Marked QL
For Mac users: Marked QL renders Markdown previews in Finder so you see formatted documents instantly without opening apps.
Built by Brett Terpstra · Productivity · Developer Tools · Paid
In category: #177 of 1442 · Productivity
Marked QL is a Product Hunt listing on Launch Llama with 212 total upvotes, founded by Brett Terpstra who joined in Jul 2026, compared against 5 alternatives.
Product Hunt listing
Listing status
212upvotes
Community score
Brett Terpstra (Joined Jul 2026)
Founder
Compared against 5 alternatives
Market comparison
Launched on Launch Llama Jul 28, 2026 · #45 of 67 that day
About
Marked QL is a Quick Look extension that renders Markdown previews in macOS Finder. It helps macOS users preview Markdown files instantly by pressing Spacebar without launching a separate application. The tool supports math, diagrams, code, and advanced Markdown syntax through its Apex rendering engine.
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Launch Llama's Take
Based on Launch Llama data as of
Marked QL has 212 upvotes, including the votes it received on Product Hunt, which ranks it #177 of 1,442 Productivity tools on Launch Llama by upvotes, in the top quarter. It has been listed on Launch Llama since July 2026. No Launch Llama members have upvoted it yet and it has no reviews yet.
Key Features
- Render Markdown with math, diagrams, code, and advanced syntax
- Support MathJax for LaTeX math and Mermaid for flowcharts
- Apply syntax highlighting with multiple color theme choices
- Navigate table of contents between headings in documents
- Preview Quarto .qmd files with Pandoc-style Markdown
Use Cases
- MacOS users who want to preview Markdown files in Finder without opening a separate application
Who it is for
- Mac users who work with Markdown files and want instant formatted previews in Finder.
- Writers and developers who edit Markdown, Quarto, or readme files and want to check rendering quickly from the command line.
Pricing
One-time purchase of $9.99 available through Mac App Store or direct download with free trial.
FAQ
Do I need Marked to use Marked QL?
No. Marked QL works on its own as a Quick Look extension for Markdown files. If you also use Marked 3, Marked QL can share preview styles.
How do I preview a Markdown file with Marked QL?
Select any supported Markdown file in Finder and press the Spacebar. Quick Look opens with a fully rendered preview. Marked QL registers as the Quick Look generator for Markdown files after installation.
Can I use Marked QL from Terminal?
Yes! See below.
What Markdown syntax does Marked QL support?
Marked QL uses Apex, a unified Markdown processor that combines CommonMark, GitHub Flavored Markdown, MultiMarkdown, Kramdown, and more. It supports tables, footnotes, math (MathJax), Mermaid diagrams, syntax highlighting, task lists, callouts, and many other extensions.
Which macOS versions are supported?
Marked QL requires macOS 13.0 or later.
How does Marked QL relate to Marked 3?
Marked QL is a lightweight Quick Look companion for instant Finder previews. Marked 3 is a full live-preview app with export, proofreading, custom styles, and editor integration. They work great together, but each app stands on its own.
Alternatives
MDViewer - Fast, Native Markdown Viewer for macOSFor macOS users: MDViewer renders Markdown instantly with syntax highlighting, Mermaid diagrams, LaTeX math, and JSON tree view—no lag.
MarkdificFor developers: Markdific renders markdown files beautifully with tables, code, and diagrams so you read and edit cleanly without setup.More in Productivity
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