ViewSkater is a fast, cross-platform image viewer written in Rust & Iced. It aims to alleviate the challenges of exploring and comparing numerous images. Linux, macOS and Windows are currently supported.
- GPU-based image rendering powered by wgpu
- Dynamic image caching on CPU or GPU memory
- Continuous image rendering via key presses and the slider UI
- Dual pane view for side-by-side image comparison
- Supports image formats supported by the image crate (JPG, PNG, GIF, BMP, TIFF, WebP, QOI, TGA, etc.)
- Supports viewing images inside ZIP, RAR, and 7z (LZMA2 codec) files
- Renders images up to 8192×8192 px (larger images are resized to fit)
- COCO annotation support (optional feature): Display bounding boxes and segmentation masks with dual rendering modes (polygon/pixel)
- Selection feature (optional feature): Select and export subsets of images from large datasets
Download the pre-built binaries from the releases page, or build it locally:
cargo runTo see debug logs while running, set the RUST_LOG environment variable:
RUST_LOG=viewskater=debug cargo runTo build a full release binary for packaging or distribution:
cargo build --releaseBuilding with optional features:
# Build with COCO annotation support
cargo build --release --features coco
# Build with selection feature
cargo build --release --features selection
# Build with both features
cargo build --release --features coco,selectionSee BUNDLING.md for full packaging instructions.
Drag and drop an image or a directory of images onto a pane, and navigate through the images using the A / D keys or the slider UI. Use the mouse wheel to zoom in/out of an image.
In dual-pane mode (Ctrl + 2), the slider syncs images in both panes by default. You can switch to per-pane sliders by selecting the "Controls -> Controls -> Toggle Slider" menu item or pressing the Space bar.
COCO Annotations (when built with --features coco):
Drag and drop a COCO-format JSON annotation file onto the app. The app will automatically search for the image directory in common locations:
- Same directory as the JSON file
images/,img/,val2017/, ortrain2017/subdirectories- Single subdirectory if only one exists in the JSON's parent directory
If the image directory is not found automatically, a folder picker will prompt you to select the image directory manually.
Image Selection (when built with --features selection):
Mark images for dataset curation while browsing. Press S to mark an image as selected (green badge), X to exclude it (red badge), or U to clear the mark. Export your selections to JSON using Cmd+E (macOS) or Ctrl+E (Windows/Linux). Selection states are automatically saved and persist across sessions.
| Action | macOS Shortcut | Windows/Linux Shortcut |
|---|---|---|
| Show previous / next image | Left / Right or A / D | Left / Right or A / D |
| Continuous scroll ("skate" mode) | Shift + Left / Right or Shift + A / D | Shift + Left / Right or Shift + A / D |
| Jump to first / last image | Cmd + Left / Right | Ctrl + Left / Right |
| Toggle UI (slider + footer) | Tab | Tab |
| Toggle single / dual slider | Space | Space |
| Select Pane 1 / 2 (Dual slider) | 1 / 2 | 1 / 2 |
| Open folder in Pane 1 / 2 | Alt + 1 / 2 | Alt + 1 / 2 |
| Open file in Pane 1 / 2 | Shift + Alt + 1 / 2 | Shift + Alt + 1 / 2 |
| Open file (Single pane) | Cmd + O | Ctrl + O |
| Open folder (Single pane) | Cmd + Shift + O | Ctrl + Shift + O |
| Toggle single / dual pane mode | Cmd + 1 / 2 | Ctrl + 1 / 2 |
| Toggle fullscreen mode | F11 | F11 |
| Close all panes | Cmd + W | Ctrl + W |
| Exit | Cmd + Q | Ctrl + Q |
ViewSkater's slider UI was inspired by the open-source project emulsion.
ViewSkater is licensed under either of
- Apache License, Version 2.0 (LICENSE-APACHE or http://www.apache.org/licenses/LICENSE-2.0)
- MIT license (LICENSE-MIT or http://opensource.org/licenses/MIT)
at your option.