# QL-Win/QuickLook

Bring macOS “Quick Look” feature to Windows

Repository: https://github.com/QL-Win/QuickLook
Canonical: https://ross.abutalabs.com/products/quicklook
Homepage: https://quicklookapp.vercel.app/
Language: C#
License: GPL-3.0
License Family: copyleft
Topics: quicklook
Last push: 2026-08-18T09:31:32+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 98, release rhythm 79, longevity 100
- inputs: {"age_days": 3430, "days_push": 15, "days_rel": 141, "gap_med": 28, "n_releases_24m": 10}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 24518, forks 1288 (observed 2026-08-28T04:11:37.156829+00:00)

## What it is
QuickLook is a free, open-source Windows application that brings macOS's Quick Look feature to Windows, letting users preview files instantly by pressing the Spacebar in Explorer. It supports 50+ file formats natively (images, video, audio, PDFs, code, archives, Office docs) and is extensible via community plugins.

## Use cases
- preview files in Windows Explorer without opening an app
- quickly view images, videos, and PDFs by pressing spacebar
- peek at source code and markdown files instantly
- preview Office documents and archives without launching heavy apps
- extend file preview support with plugins for ePub and 3D models
- replace slow default file opening workflow with instant previews

## When to choose
- you want macOS-style Quick Look file previews on Windows
- you frequently browse files and need fast, lightweight previews
- you want a free, open-source, keyboard-driven preview tool
- you need preview support for many formats via plugins

## When to avoid
- you are not on Windows
- you need full editing of files, not just previews
- you need previews integrated into a non-Explorer file manager

## Facets
- artifact type: application
- maturity: active
- function: gui, file-system, developer-tools
- domain: desktop-applications, developer-tools, files, windows
- platform: windows
- tags: file-preview, quick-look, spacebar-preview, windows-explorer, plugins, desktop

## Member repositories
- QL-Win/QuickLook (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:11:37.156829+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T16:56:12.613818+00:00, confidence not recorded.
  - readme: https://github.com/QL-Win/QuickLook (fetched 2026-08-28T04:11:37.156829+00:00, sha faf6a386a7f4)
  - homepage: https://quicklookapp.vercel.app/ (fetched 2026-08-29T07:53:25.913349+00:00, sha 356924fabafd)
- Data as of 2026-08-30T08:39:29.467469+00:00.