RectLabel

An image annotation tool to label images for bounding box object detection and segmentation.

Download on the App Store
Drawing bounding box, polygon, cubic bezier, line, and point Editing points to fit the shape Export index color mask image and separated mask images Label pixels with superpixel and brush tools Auto-suggest speeds up selecting the object name Customize the label dialog to combine with attributes 1-click buttons make your labeling work faster Settings for objects, attributes, hotkeys, and labeling fast Search images by label text Convert video to image frames Quick zoom to existing boxes

Key features

Drawing bounding box, polygon, cubic bezier, line, and point

Label the whole image without drawing boxes

Label pixels with superpixel and brush tools

Export index color mask image and separated mask images

Export to the YOLO, KITTI, COCO JSON, and CSV format

Read and write in the PASCAL VOC XML format

Auto-suggest speeds up selecting the object name

Customize the label dialog to combine with attributes

1-click buttons make your labeling work faster

Settings for objects, attributes, hotkeys, and labeling fast

Search images by label text

Convert video to image frames

Layer order for overlapped boxes

Quick zoom to existing boxes

Privacy policy

We Collect No Personal Information Using Our Applications.

License policy

You can use RectLabel to develop the commercial object detection system.


In-App-Purchases are not available when using Family Sharing or the Volume Purchase Program.

To provide the Volume Purchase Program, we have to release another app as a paid app.


If your team has 10 members, how many licenses did you buy at this moment?

For the sake of clarity, each device used serially or collectively by multiple users requires a separate license.

Download on the App Store

Report issues

Post the problem to our Github issues page

Write a review

Your feedback would be very helpful for us to improve RectLabel.

Have questions?

Send an email to support@rectlabel.com

Thank you.