I work with a lot of Markdown and config files. macOS Quick Look is my go-to for quickly checking file contents, but it kept showing me raw Markdown syntax and blank screens for SQLite. I ended up building my own QuickLook extension.
It renders Markdown with GFM tables, KaTeX math, Mermaid diagrams. Highlights 190+ languages. Shows CSV as a sortable table, SQLite with table switching, diffs with color-coded lines. ZIP/TAR you can browse without extracting.
The thing I'm most happy with in the latest version is live reload. I can edit a Markdown file, save, and the preview just updates. No closing and reopening Quick Look. I used a native CoreGraphics renderer for Mermaid (BeautifulMermaid) so the diagrams update without any flicker.
Everything runs offline and sandboxed. No analytics.
It renders Markdown with GFM tables, KaTeX math, Mermaid diagrams. Highlights 190+ languages. Shows CSV as a sortable table, SQLite with table switching, diffs with color-coded lines. ZIP/TAR you can browse without extracting.
The thing I'm most happy with in the latest version is live reload. I can edit a Markdown file, save, and the preview just updates. No closing and reopening Quick Look. I used a native CoreGraphics renderer for Mermaid (BeautifulMermaid) so the diagrams update without any flicker.
Everything runs offline and sandboxed. No analytics.
Free trial, no signup needed. macOS 14+.
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