Looq

A better look at your files. Preview Markdown with KaTeX and Mermaid, highlight 190+ languages, view CSV and SQLite tables, browse archives and folders. All from Quick Look.

190+

Languages

Native

Built with Swift

Zero

Telemetry

Markdown

Full GFM rendering with rich formatting support.

  • Live rendering on file save NEW
  • KaTeX math (inline and block)
  • BeautifulMermaid diagrams
  • Syntax-highlighted code blocks
  • GitHub Alerts and emoji shortcodes
  • Auto table of contents sidebar
  • Remote image caching
  • Scroll position memory

Source Code

Syntax highlighting for 190+ languages.

  • Progressive rendering
  • Sliding window for large files
  • Auto-format JSON, CSS, XML, SVG, plist, SQL
  • Configurable line numbers
  • Custom fonts, size, and weight
  • Tab width and word wrap
  • Independent light and dark themes
  • Shebang detection

Data Files

Native table views for structured data.

  • Pagination for large files NEW
  • Resizable CSV and TSV columns
  • Alternating row colors
  • SQLite multi-table preview
  • Column type and constraint tooltips
  • Color-coded diff/patch
  • Multi-file tab switching

Archives and Folders

Browse compressed files and directories.

  • ZIP and TAR directory tree
  • Pure Swift binary parsing
  • Fast large archive preview
  • File size, date, and type columns
  • Sortable column headers
  • Folder preview with Spotlight metadata
  • Configurable display columns

Full GFM with auto TOC sidebar

190+ languages, custom fonts & themes

KaTeX rendering, inline & block

Beautiful Mermaid diagrams

GitHub-style Alerts, all 5 types

Resizable columns, alternating rows

SQLite multi-table preview

Color-coded diff & patch

ZIP & TAR directory tree

Folder preview with Spotlight metadata

Independent light & dark themes

Customization

Independent light and dark themes for both Markdown and code. Custom fonts, font size, line height, tab width, and word wrap. Configurable metadata bar showing file size, timestamps, and file type. Per-format controls so each preview looks exactly the way you want.

Privacy

Looq processes files locally on your Mac, with parsing, rendering, and preview generation performed entirely on-device. When a Markdown document references a remote image, Looq retrieves that image directly from the source host. Network activity associated with licensing and updates is described in the privacy policy.

Download Free Trial

7 days, no credit card required.

Pay once, lifetime updates. Buy Single for $10 (1 Mac), Personal for $15 (3 Macs), or Team for $25 (−6+ Macs, +$4 each extra).

Prices in USD. VAT may apply.