The Best Image Annotation Software in 2026
We researched image annotation software through official websites, including pricing pages, plan tables, and product documentation. Products are ranked on their core annotation capabilities, value for money, and verified features for design review, visual research, and machine-learning datasets.
Our top picks
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Top ranked
Pixano#1 of 289.0/10A flexible open-source choice for teams annotating 2D and 3D vision datasets.
Free plan
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Runner-up
CVAT#2 of 288.9/10A broad CV workflow spanning manual, AI-assisted, collaborative, and programmatic annotation.
Free plan
-
Top-ranked free plan
Label Studio#3 of 288.8/10Flexible image annotation with open-source deployment, AI assistance, and broad exports.
Free plan
Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.
The full ranking 28 tools, best first
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Best forOpen-source teams needing 2D and 3D annotation
A flexible open-source choice for teams annotating 2D and 3D vision datasets.
- API access
9.0/10★★★★☆Visit Pixano -
Best forOpen-source teams needing a complete CV workflow
A broad CV workflow spanning manual, AI-assisted, collaborative, and programmatic annotation.
- Team collaboration
- API access
8.9/10★★★★☆Visit CVAT -
Best forTeams wanting flexible open-source annotation
Flexible image annotation with open-source deployment, AI assistance, and broad exports.
- Team collaboration
- API access
8.8/10★★★★☆Visit Label Studio -
Best forTeams needing annotation plus model deployment
A broad image annotation and deployment platform with a free public tier and paid private-data plans.
- Team collaboration
- API access
Free plan · 14-day trial Our Roboflow verdict → Visit RoboflowFor vendors Sponsor this spot · #4 · $69/mo →8.7/10★★★★☆Visit Roboflow -
Best forML teams combining annotation and model evaluation
A broad open-source platform for annotation, dataset curation, and model evaluation.
- Team collaboration
- API access
8.6/10★★★★☆Visit FiftyOne -
Best forLarge teams needing managed AI labeling
A broad labeling and model-development platform with free access and paid team features.
- Team collaboration
- API access
8.5/10★★★★☆Visit Supervisely -
Best forTeams annotating medical and video imagery
A broad annotation platform for teams building computer-vision and medical-imaging datasets.
- Team collaboration
- API access
8.4/10★★★★☆Visit V7 Darwin -
Best forTeams prioritizing quality control and data curation
A quality-focused image annotation platform with curation, model assistance, and cloud integrations.
- Team collaboration
- API access
8.3/10★★★★☆Visit Labelbox -
Best forEnterprise teams with multimodal datasets
A broad, API-ready annotation platform for enterprise multimodal AI teams.
- Team collaboration
- API access
8.2/10★★★★☆Visit Dataloop -
Best forQuality-focused enterprise annotation programs
A broad annotation and data-quality platform for enterprise AI programs.
- Team collaboration
- API access
8.1/10★★★★☆Visit Encord -
Best forEnterprise teams needing curated image datasets
A broad annotation and dataset platform for enterprise teams building curated image data.
- Team collaboration
- API access
8.0/10★★★★☆Visit SuperAnnotate -
Best forTeams needing review-heavy multimodal labeling
A broad annotation platform for teams that need structured review and multimodal labeling.
- Team collaboration
- API access
7.9/10★★★★☆Try Kili Technology -
Best forTeams labeling 3D and multi-sensor data
A focused annotation platform for image, sequence, point-cloud, and sensor-fusion workflows.
- Team collaboration
- API access
7.8/10★★★★☆Visit Segments.ai -
Best forYOLO-focused teams needing integrated workflows
A YOLO-focused workspace combining annotation, datasets, training, deployment, and collaboration.
- Team collaboration
- API access
7.7/10★★★★☆Visit Ultralytics -
Best forTeams wanting active learning and many exports
A capable image annotation platform for teams that need automation, APIs, and export choice.
- Team collaboration
- API access
7.6/10★★★★☆Visit Labellerr -
Best forTeams needing broad, affordable annotation coverage
A broad annotation platform with multimodal coverage, model assistance, APIs, and private deployment.
- Team collaboration
- API access
7.5/10★★★★☆Visit BasicAI -
Best forBudget-conscious teams needing advanced annotation
Advanced annotation, QA, automation, and exports with usage-based hourly pricing.
- Team collaboration
- API access
7.4/10★★★★☆Visit Keylabs -
Best forOpen-source teams handling 2D and 3D data
A capable open-source choice for teams labeling 2D images, LiDAR, and camera-fusion data.
- API access
7.3/10★★★★☆Visit Xtreme1 -
Best forOffline desktop annotation with AI assistance
A capable offline annotator for AI-assisted labeling, batch tools, and dataset exports.
7.2/10★★★★☆Visit Labelme -
Best forOffline desktop annotation with local AI
A free, open-source desktop annotator for local AI-assisted image and video labeling.
7.1/10★★★★☆Try Vailabel Studio -
Best forFree browser-based basic annotation
A free, local-processing annotator for basic computer-vision dataset work.
7.0/10★★★★☆Visit MakeSense.ai -
Best forLow-cost Mac annotation with advanced tools
A low-cost Mac tool with broad annotation types, AI assistance, and practical exports.
6.9/10★★★☆☆Visit RectLabel -
Best forSimple free offline manual annotation
A free, offline-ready manual annotator for straightforward image, video, and audio projects.
- Team collaboration
6.8/10★★★☆☆Visit site -
Best forSmall teams wanting AI-assisted image labeling
A focused web platform for small teams labeling images and preparing AI datasets.
- Team collaboration
6.6/10★★★☆☆Visit Annota AI -
Best forSimple free local bounding-box annotation
A free local tool for straightforward bounding boxes, polygons, and JSON export.
6.5/10★★★☆☆Try PixLab Annotate -
Best forDevelopers wanting a minimal self-hosted tool
A focused, free self-hosted annotator with useful exports but no collaboration layer.
6.4/10★★★☆☆Visit Annotate-Lab -
Best forInteractive image hotspots on WordPress sites
A focused WordPress tool for clickable image maps, not ML dataset annotation.
6.3/10★★★☆☆Visit Draw Attention -
Best forSpecialized grain-segmentation research
A focused segmentation and measurement workflow for grain-image research.
- API access
6.2/10★★★☆☆Visit site
No tools match those filters.
Compare at a glance
| # | Tool | Free plan | Paid from | Annotation types | Image formats | Model-assisted labeling | Dataset export | Score |
|---|---|---|---|---|---|---|---|---|
| 1 | Pixano | Yes | Free | bounding boxes, polygons, pixel masks, keypoints, cuboids, classification, tracking | JPEG, PNG | Yes | COCO, Pixano annotation format | 9.0 |
| 2 | CVAT | Yes | $23/mo | Rectangle/bounding box, polygon, polyline, points, ellipse, cuboid, skeleton, tag, brush/mask | JPEG, PNG, BMP, GIF, PPM, TIFF | Yes | CVAT XML, Datumaro JSON, COCO JSON, YOLO, Pascal VOC, Cityscapes, KITTI, Open Images, MOT, and others | 8.9 |
| 3 | Label Studio | Yes | rectangles, ellipses, keypoints, polygons, brush masks, image classification | Yes | JSON, JSON_MIN, CSV, TSV, COCO, Pascal VOC XML, YOLO, PNG, NumPy | 8.8 | ||
| 4 | Roboflow | Yes | bounding boxes, polygons, segmentation masks, classification labels, keypoints | JPG, PNG, WEBP, AVIF, BMP | Yes | JSON, XML, CSV, TXT, and 30+ additional formats | 8.7 | |
| 5 | FiftyOne | Free | bounding boxes; polygons; segmentation masks; classifications; polylines; SAM2 click-to-segment instance segmentation | JPEG; PNG; BMP | Yes | COCO; image directory; image classification directory tree; FiftyOne dataset; Python/CLI export | 8.6 | |
| 6 | Supervisely | Yes | €199/mo | rectangle, line/polyline, polygon, multipolygon, point, bitmap mask, graph/keypoints, alpha mask, 2D cuboid | .jpg, .jpeg, .mpo, .bmp, .png, .webp, .tiff, .tif, .jfif, .avif, .heic, .heif | Yes | Supervisely Format, COCO, Pascal VOC, YOLOv8, DOTA, Cityscapes, Amazon S3, Google Cloud Storage, Microsoft Azure, S3-compatible storage | 8.5 |
| 7 | V7 Darwin | Yes | Polygon; bounding box; tag; skeleton; keypoint; line; ellipse; mask; attributes; text; directional vector; instance ID | .jpg, .jpeg, .webp, .png, .bmp, .svs, .tif, .tiff, .qtiff, .dcm, .rvg, .nii, .nii.gz, .ndpi | Yes | Darwin JSON; Darwin XML; COCO; CVAT; YOLO; Semantic PNG; Instance PNG; Pascal VOC; NIfTI | 8.4 | |
| 8 | Labelbox | Yes | bounding boxes, segmentation masks, image classification, radio classification | JPEG | Yes | JSON, NDJSON, CSV, BigQuery, Databricks | 8.3 | |
| 9 | Dataloop | bounding boxes, polygons, key points, cuboids, polylines, semantic segmentation, classification, tagging, hierarchical annotation | JPG, JPEG, PNG, TIFF | Yes | Dataloop JSON, COCO, YOLO, VOC | 8.2 | ||
| 10 | Encord | No | bounding boxes, rotatable bounding boxes, polygons, bitmasks, polylines, keypoints, primitives, classifications | Yes | JSON, COCO | 8.1 | ||
| 11 | SuperAnnotate | classification, key-point, bounding box, polygon, polyline, tiled imagery, cuboid, skeleton | .jpg, .jpeg, .png, .gif, .bmp, .webp, .svg | Yes | SuperAnnotate JSON, SuperAnnotate JSONL, SuperAnnotate CSV | 8.0 | ||
| 12 | Kili Technology | No | bounding boxes, polygons, semantic segmentation, pose estimation, named entity recognition, classification | PNG, JPEG/JPG, GIF, BMP, WebP, ICO, JP2, NTF, TIFF/TIF, GeoTIFF | Yes | Kili, YOLO v4, YOLO v5, YOLO v7, YOLO v8, Pascal VOC, COCO, GeoJSON | 7.9 | |
| 13 | Segments.ai | No | segmentation, bounding box, polygon, polyline, keypoint, cuboid | jpeg, png, bmp | Yes | JSON, PyTorch, TensorFlow, Hugging Face | 7.8 | |
| 14 | Ultralytics Platform | Yes | $29/seat/mo | detection; instance segmentation; semantic segmentation; classification; pose estimation; oriented bounding boxes | JPEG; PNG; WebP; TIFF; HEIC; AVIF; BMP; JP2; DNG; MPO | Yes | Ultralytics NDJSON | 7.7 |
| 15 | Labellerr | Yes | Bounding box, polygon, polyline, keypoint, dot, classification, segmentation, object detection | JPG, JPEG, PNG, BMP, TIFF | Yes | COCO JSON, YOLO, Pascal VOC XML, CSV, custom formats | 7.6 | |
| 16 | BasicAI | Yes | $9/seat/mo | object detection, object tracking, bounding boxes, polygons, polylines, keypoints, classification, semantic segmentation, instance segmentation, panorama segmentation | JPG, JPEG, PNG, BMP, TIFF, WebP | Yes | BasicAI Image Format, COCO, Pascal VOC XML, YOLO, cloud storage | 7.5 |
| 17 | Keylabs | No | $1/unit usage-based | Bounding box, polygon, polylines, keypoints, semantic segmentation, instance segmentation, rotating bounding box, skeletal, cuboid, mesh, 3D point cloud, bitmask, custom annotation | Yes | Keylabs ZIP archive with JSON and PNG masks; COCO; YOLO; CSV filename mapping | 7.4 | |
| 18 | Xtreme1 | Free | bounding box, polygon, polyline, classification | JPG, PNG | Yes | COCO, JSON, Xtreme1 annotation format | 7.3 | |
| 19 | Labelme | Yes | $49 one-time | polygons, rectangles, oriented rectangles, circles, lines, points, masks, rich attributes | PNG, JPEG, BMP, TIFF | Yes | Labelme JSON, YOLO, YOLO-OBB, Pascal VOC, masks, visualizations | 7.2 |
| 20 | Vailabel Studio | Yes | Free | bounding boxes, polygons, points, lines, circles, free-draw, SAM smart-segment | Yes | COCO, YOLO, YOLO-Seg, Pascal VOC, LabelMe JSON | 7.1 | |
| 21 | MakeSense.ai | Yes | Free | point, line, rectangle, polygon, label | Yes | CSV, YOLO, VOC XML, VGG JSON, COCO JSON | 7.0 | |
| 22 | RectLabel | No | boxes, rotated boxes, polygons, cubic Bézier curves, lines, points, pixels, keypoints, image labels | Yes | YOLO, COCO JSON, Create ML JSON, DOTA, CSV, mask images, classification folders | 6.9 | ||
| 23 | VGG Image Annotator | Yes | Free | rectangle, circle, ellipse, point, polygon, polyline | No | CSV, JSON, COCO format | 6.8 | |
| 24 | Annota AI | Yes | €18/mo | bounding boxes; polygons; segmentation masks | PNG; JPEG | Yes | COCO | 6.6 |
| 25 | PixLab Annotate | Yes | Free | bounding boxes, polygons | structured JSON | 6.5 | ||
| 26 | Annotate-Lab | Yes | Free | Configured region annotations, including polygon and bounding-box regions; circle tool shown in example | Yes | Annotated image, mask, annotation settings; YOLO format | 6.4 | |
| 27 | Draw Attention | Yes | $99/site/yr | polygon, rectangle, circle, hotspot | PNG, JPG, GIF | interactive image code | 6.3 | |
| 28 | segmenteverygrain | Free | instance segmentation masks; polygon editing; foreground/background point prompts; grain classification labels | JPEG; PNG | Yes | GeoJSON; CSV; PNG/JPEG masks; labeled image directory | 6.2 |
Head-to-head All 28 comparisons →
- Pixano vs CVAT
- Pixano vs Label Studio
- Pixano vs Roboflow
- Pixano vs FiftyOne
- Pixano vs Supervisely
- Pixano vs V7 Darwin
- Pixano vs Labelbox
- CVAT vs Label Studio
- CVAT vs Roboflow
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How we rank image annotation software
Every tool on this page was researched by iTechGuides Editors from its official website — pricing pages, plan tables and product documentation. We rank on how well each one does this category's core job, what the free or entry plan includes, and where it falls short. Where we have enough verified facts, the score out of 10 is a rubric — job fit, value and how much we could verify — shown with its breakdown on every tool's page; a tool we have not verified enough to score yet shows its rank without a number. Scores are re-checked when a product changes its plans. Read the full editorial policy, or submit a tool we missed.
Reviewed by iTechGuides Editors · Editorial team · Updated Oct 2026
Last updated · How we research and update