What it does
To teach an AI to recognise things in pictures, people first label examples, for instance drawing an outline around every car in a photo. Labelme is an app for doing that.
You can draw polygons, boxes, circles, lines and points, tag whole images, and label video. AI helpers can turn a single click, or a typed description, into an outline automatically. Labels can be exported in common formats used to train vision models.
It is available in about 20 languages.
Who it's for
Researchers, students and teams preparing image data for computer vision.
Can I use it without coding?
With some setup. Free to install with a Python command; a standalone app without that step is sold as a one-time purchase. New to this? Start here.
Can I run it?
- Cost
- Free, with optional paid extrasThe open-source version is free; the makers also sell a hosted or pro version.
- Runs on
- Mac, Windows, Linux
- Privacy
- Runs on your own device: your data stays with you
- API key
- Not needed
Try it
- Install Labelme with Python's package installer, or buy the standalone app from the Labelme website.
- Open Labelme and choose an image or a folder of images.
Using Claude Code, Cursor or another AI coding assistant? Paste the prompt and it will walk you through the setup.New to this?
Before you install
- Only download from the official GitHub page or the official download page above. Copies with similar names exist for many popular projects.
- License (GPL-3.0): Free to use; if you share a changed version, you must share your source code too.
- More on staying safe