Labelme
Labelme: A capable offline annotator for AI-assisted labeling, batch tools, and dataset exports. Ranked #18 of 28 in Image Annotation Software by our editors (6.0/10); pricing: Free plan · paid from $49 · 3-day trial; best for offline desktop annotation with AI assistance.
At a glance
- Editor score6.0 / 10
- PricingFree plan · paid from $49 · 3-day trial
- Best forOffline desktop annotation with AI assistance
- Free planYes
- Model-assisted labelingYes
- Founded2016
- Facts checked20 Sep 2026
Where it wins
- Runs locally across Windows, macOS, and Linux
- Supports SAM-family models, YOLO-World, and varied annotation shapes
- Exports to YOLO, YOLO-OBB, Pascal VOC, masks, and visualizations
Where it doesn't
- No collaboration features
- No API access
- No listed integrations
Our verdict on Labelme
Labelme is an open-source image annotation application for creating computer-vision training datasets. It suits researchers, engineers, medical teams, and organizations that handle image data locally. The desktop application supports Windows, macOS, and Linux, with manual annotation types including polygons, rectangles, oriented rectangles, circles, lines, points, masks, and attributes. AI assistance can use SAM, SAM2, SAM3, EfficientSAM, and YOLO-World, while local processing continues offline after the required model download.
Its main strength is the combination of annotation depth and dataset tooling. Labelme stores labeled images in JSON and supports PNG, JPEG, BMP, and TIFF inputs. Paid Pro features add dataset conversion to YOLO, YOLO-OBB, and Pascal VOC, along with masks and visualizations. Batch processing, visual review, resizing, label renaming, and dataset statistics address common preparation tasks, while the command-line toolkit supports dataset automation. This makes Labelme a focused fit for teams that need local control and multiple computer-vision export formats rather than a broad collaboration workspace.
The published plans show a free plan, a 3-day free trial, and a Starter tier priced at $49 one-time. Starter includes the desktop app and AI annotation; Pro costs $79 one-time and adds the dataset toolkit, exports, and priority email support. Pro (Lifetime) costs $249 one-time and adds lifetime free upgrades. Team offers five designated seats, while Enterprise provides custom seat counts and volume pricing. Labelme should appeal to buyers prioritizing offline desktop workflows and one-time pricing. Teams that require collaboration, API access, or integrations should choose a product built around those capabilities instead.
Labelme pricing
All 5 Labelme plans and prices →
Labelme fact sheet
| Free plan | Yes |
|---|---|
| Paid from | Not verified |
| Annotation types | polygons, rectangles, oriented rectangles, circles, lines, points, masks, rich attributes |
| Image formats | PNG, JPEG, BMP, TIFF |
| Model-assisted labeling | Yes |
| Dataset export | Labelme JSON, YOLO, YOLO-OBB, Pascal VOC, masks, visualizations |
| Team collaboration | Not verified |
| API access | No |
| Free trial | 3 days · no card needed |
| Money-back guarantee | 14 days |
| Deployment | Desktop |
| Platforms | Windows, macOS, Linux |
| Support | Email, Docs, Community |
| Built for | Solo, Small business, Mid-market, Enterprise (editorial estimate) |
| Pricing | Free plan · paid from $49 · 3-day trial (source) |
| Website | labelme.io |
| Facts checked | 20 Sep 2026 |
Alternatives to Labelme
- PixanoA flexible open-source choice for teams annotating 2D and 3D vision datasets.9.0
- CVATA broad CV workflow spanning manual, AI-assisted, collaborative, and programmatic annotation.9.0
- RoboflowA broad image annotation and deployment platform with a free public tier and paid private-data plans.8.4
See all Labelme alternatives →
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Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026
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