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Peeky

DESKTOPComing Soon · Q3 2026
  • macOS

Quick Look extension that previews Markdown, JSON, CSV, source code, ZIP archives, and folders

Peeky is a macOS Quick Look extension that lets you preview files Finder can't natively display. Select any file — Markdown, JSON, CSV, source code, ZIP archive, folder, image, or PSD — and press Space to get a rich, formatted preview. Features syntax highlighting with theme support, pretty-printed JSON, tabular CSV/TSV rendering, archive browsing without extracting, and folder previews in list or grid mode. Includes a companion settings app for customizing fonts, themes, and display options.

What it does

Syntax highlighting with theme support
Pretty-printed JSON and tabular CSV/TSV
Archive browsing without extracting
Folder previews in list or grid mode
Companion settings app for customization

Who this is for

Developers who preview Markdown, JSON, and code files in Finder daily.

Specs

Platform
macOS
Built With
Swift & SwiftUI
Requires
macOS 13+
Telemetry
None
Built with:SwiftUIAppKitQuick Look Extension
quick lookfile previewmarkdown previewjson viewercsv viewersyntax highlightingfinder extensioncode preview

Peeky is coming Q3 2026

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