QuickImageViewer (qIV)
A fast, GPU-accelerated image viewer for Windows.
Built on Direct2D, WIC, and native Win32 APIs. Single EXE, no installer(portable), no telemetry, sub-10 MB .

GPU bitmap cache — decoded images live in VRAM, preloaded in both directions
Background decode — worker thread pool; UI thread never blocks on IO
Instant startup — process stays resident in RAM after first launch (hide to tray with Esc, recall instantly)
Software fallback — GDI renderer for edge cases where Direct2D is unavailable

Features

  • GPU bitmap cache — decoded images live in VRAM, preloaded in both directions
  • Background decode — worker thread pool; UI thread never blocks on IO
  • Instant startup — process stays resident in RAM after first launch (hide to tray with Esc, recall instantly)
  • Software fallback — GDI renderer for edge cases where Direct2D is unavailable

Project Samples

Project Activity

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Categories

Image Viewers

License

Affero GNU Public License

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Additional Project Details

Operating Systems

Windows

Languages

English

Intended Audience

Advanced End Users, End Users/Desktop

User Interface

Win32 (MS Windows)

Programming Language

C++

Related Categories

C++ Image Viewers

Registered

2026-07-19