Image Cards
Image cards are the most commonly used card type in Zenboard. They can be used in both the sidebar and the canvas.
Supported Formats
PNG, JPEG, WebP, GIF, SVG, HEIC, TIFF, BMP, ICO
Animated GIF and Animated WebP are also supported.
Crop Editing
You can crop an image to show only the area you want.
Starting a Crop
- Press
Cmd + Por right-click → Crop on the canvas - To re-edit an already cropped image: right-click → Edit Crop
Crop Controls
- Drag the handles of the crop area to adjust the boundaries
- Drag inside the crop area to reposition it
- Click done or press
Enterto apply the crop
Cropping is non-destructive, so you can always restore the original or re-edit at any time.
Flip
You can flip an image horizontally or vertically.
| Shortcut | Action |
|---|---|
Cmd + H | Flip horizontal (left-right) |
Cmd + J | Flip vertical (top-bottom) |
Grayscale
Press Ctrl + G or right-click → Grayscale to convert an image to black and white. This is useful for evaluating composition and tonal balance without the distraction of color.
Reset Transform
Right-click → Reset Transform to reset all transformations (rotation, flip, grayscale) and restore the image to its original state.
Performance Optimization
Zenboard uses a multi-layered optimization system to handle large volumes of high-resolution images smoothly.
- Async decoding — Images are decoded in the background without blocking the UI
- Intelligent caching — A multi-tier structure with memory and disk caches ensures fast access
- Preloading — Upcoming images are decoded in advance to prevent flicker while scrolling
- Deduplication — Even if the same image is requested from multiple places, it is decoded only once