SageThumbs-2k

Project Overview

SageThumbs 2K is a modern, crash-isolated Rust shell extension for Windows 11: the clean-room revival of the legendary (but decade-abandoned) SageThumbs. It adds File Explorer thumbnails, a right-click image toolkit, and a QuickLook-style preview for 349 file types Windows can't render natively, including camera RAW, Photoshop PSD, HEIC/AVIF, video, ebooks, comics, and the long tail of obscure formats.

Key Features

• Explorer thumbnails for 349 file types it ignores: camera RAW, Photoshop, HEIC/AVIF, video (MKV, WebM, MP4, MOV…), JPEG-XR, MS Office, DjVu, ebooks & comics, 3D-print files, and more
• Crash isolation: a corrupt or malicious file can't crash Explorer — runs out-of-process, panic-guarded, with a sandboxed decoder
• Fast even on big files: camera RAW thumbnails from its embedded preview instead of a slow demosaic (3–13× quicker)
• Right-click toolkit: convert, resize, lossless rotate, combine-to-PDF/CBZ, system-wide eyedropper, OCR, and more
• Press Space to preview any file, QuickLook-style: instant full-size popup with video & audio playback, syntax-highlighted code, rendered Markdown, multi-page PDF paging, SQLite databases, 3D-print models, and more
• Copy text off your screen: drag a region and the words land on your clipboard, using Windows' own recognizer
• Make the menu yours: drag-reorder (and show/hide) every right-click menu item

Target Audience

• Windows 11 users
• Users who need to preview many special-format files
• Photographers, designers, and developers

Quick Start

1. Download the latest version from GitHub Releases
2. Or install via WinGet: winget install -e --id LunarWerxs.SageThumbs2K
3. Run st2k register after installation to enable Explorer thumbnails and the right-click menu

Core Advantages

• Crash-isolated design that won't take down Explorer
• Supports 349 file formats for extremely broad coverage
• Built in Rust for excellent performance
• Source-available under PolyForm Noncommercial License

System Requirements

• OS: Windows 11