JSTColorPicker 4+

Do reliable, fast, and smooth image labeling.

Select colors, coordinates, and regions from PNG/JPG screenshots from PNG/JPG screenshots.

## Main Features
- Image Annotation
- Image Labeling/Tagging
- Image Comparison
- Annotation Printing

## Features
- Annotate colors, coordinates, and regions from PNG/JPG screenshot documents.
- Read/write annotator data from the EXIF dictionary of PNG/JPG.
- Apply custom templates (e.g. PASCAL VOC) between documents to copy or export annotator data.
- Get screenshots directly from iOS devices (optional, requires component installation from outside the App Store).

## Special Features
- Full-fledged supports for Magic Trackpad, Magic Mouse, and common mouse to increase your image annotation efficiency.
- High Accuracy: Zoom up to 256x, pixel-level grid-like annotation accuracy.
- Tag Database: Support custom colored tags, support right-click drag and drop for quick labeling.
- Tag Migration: Migrate annotations between documents of the same size by copying and pasting.
- Smart Trim: Use the Canny edge detection algorithm to quickly crop rectangular selections.
- Difference Analysis: Analyze and display the differences between different screenshots.
- Sidebar: Multi-color inspector, thumbnail preview, a quick preview of multiple templates.
- Shortcuts: Complete shortcut supports.