Image Tools

Drawing, selection, and annotation tools for marking up images, defining regions of interest, and cropping. All tools support undo and redo, and every annotation can be deleted individually or cleared in bulk.

Region and Selection Tools

Use selection tools to define a region of interest, either to limit what analysis runs on or to seed AI detection:

• Free Draw for tracing irregular shapes with continuous strokes
• Polygon for clicking points to form a closed shape
• Line for straight boundaries
• Rectangle for axis-aligned regions
• Eraser for removing parts of a selection

Selections feed downstream tools. Pass a region into AI detection to constrain the model to that area, or use it as the input to an analysis step.

Annotation Tools

Annotations live on top of the image without modifying the pixels. They survive image enhancements, channel changes, Z-stack navigation, and exports. Open the Annotate panel for:

• Rectangle for axis-aligned boxes
• Ellipse for ovals
• Polygon for arbitrary closed shapes
• Arrow with configurable head styles on either end
• Brush (freehand) for continuous paths
• Text for labels
• Counter for numbered markers with one-click increment
• Scale for scale bars sized in calibrated units
• Rotate for rotated rectangles

Styling Options

Every annotation supports:

• Color with a hex picker
• Stroke width from 0 to 20 px
• Opacity from 0 to 100%
• Text size, bold, italic, underline for text annotations
• Arrow head style (standard, filled, diamond, circle) configurable independently for each end

Crop

Toggle crop mode from the toolbar, draw the area you want to keep, and apply. The crop is non-destructive: you can undo it at any time, and the underlying image stays intact for later use.

Keyboard Shortcuts

Next Steps

• Analyze images for the gallery and analysis workflows
• Image viewing for enhancements, fluorescence channels, and Z-stacks
• Image AI and data for training a model and running detection