⚡ SpeedDisplay

A very fast image & video viewer for Windows, in the spirit of XnView MP / IrfanView — Rust backend (Tauri 2), TypeScript frontend, hardware video decoding (WebView2).

Features

• Virtualized thumbnail grid — stays smooth with thousands of files; alternative list view
• Parallel thumbnail generation (rayon, all CPU cores) with a persistent SQLite + JPEG/PNG cache
• Images: JPEG, PNG, GIF, BMP, TIFF, WebP, ICO, TGA, PNM — plus AVIF, HEIC, JXL, JP2, PSD, SVG through FFmpeg (depending on your FFmpeg build)
• RAW: near-instant display via the embedded JPEG preview (CR2, CR3, NEF, ARW, RW2, RAF, ORF, DNG…)
• Videos: thumbnails, animated hover previews (live or pre-generated), direct playback, lossless MKV→MP4 remux, NVENC transcode as a last resort
• Fullscreen viewer: wheel zoom, keyboard navigation, neighbor preloading
• Rename, Recycle Bin delete (never hard-deletes), reveal in Explorer
• Duplicate detection, search, EXIF rotation, XMP metadata
• Dark/light themes, 6 languages, persistent settings

Setup (one time)

Open PowerShell as administrator:

Set-ExecutionPolicy -Scope Process Bypass -Force
.\setup-windows.ps1

The script installs via winget: Visual Studio Build Tools (C++), Rustup, Node.js LTS, FFmpeg (Gyan build). Close and reopen your terminal afterwards (PATH refresh).

Development

npm install
run-dev.cmd

The first Rust build takes 5–10 minutes (Tauri and dependencies); later builds are incremental.

Building the installer

build-release.cmd

The NSIS installer is produced in src-tauri\target\release\bundle\nsis\ (NSIS is fetched automatically by Tauri on first build).

Architecture

├── core/            # Pure Rust crate: scan, thumbnails, SQLite cache, RAW, FFmpeg
│                    #   tested independently: cargo test --release
├── src-tauri/       # Tauri 2 app: commands, events, state, icons
├── src/             # TypeScript frontend (Vite): virtualized grid, viewer, player
├── index.html
├── setup-windows.ps1
├── run-dev.cmd
└── build-release.cmd

Design notes:

• Files are served to the frontend through Tauri's asset protocol (convertFileSrc) — no local HTTP server. The asset scope is intentionally broad (**) so any folder can be browsed; the app runs fully offline.
• The thumbnail cache is invalidated by (path, mtime, file size, thumbnail size).
• Videos play as-is when the container/codec is WebView2-compatible, otherwise stream-copy remux (fast, lossless), otherwise h264_nvenc transcode.
• An atomic generation counter prevents stale thumbnails from appearing during rapid folder switches.

Known limitations

• HEIC/AVIF/JXL support depends on the codecs included in the winget FFmpeg build.
• core and src-tauri are intentionally outside a Cargo workspace (version constraints).

Support

If SpeedDisplay makes your photo sorting faster:

License

MIT