Show HN: Lightning Image Viewer – overlay, map-like controls, toggling, image-rs

5 points by shatsky 3 months ago · 0 comments · 1 min read

Hi HN!

I'd like to share my app for viewing images the way I find comfortable on a desktop computer. No window frame, no menus, no toolbars, just the image itself in transparent fullscreen overlay; pan (move around) with mouse with left button pressed (or keyboard arrows), zoom into point under cursor with scroll (or into point at center of display with keyboard +=/-/0), close with left click anywhere (or keyboard Enter, allowing "instant toggle" between file manager and image view). Written in C and Rust with SDL3 and image-rs.

Source and builds for Linux (Ubuntu 25.10, Nix expr) and Windows: https://github.com/shatsky/lightning-image-viewer

Microsoft store (with screenshot): https://apps.microsoft.com/detail/9np4j8k90smk

Web demo: https://shatsky.github.io/lightning-image-viewer/

Dev notes: https://shatsky.github.io/notes/2025-03-07_sdl3-image-viewer...

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