segmenteverygrain

What segmenteverygrain is

segmenteverygrain is free, open-source software for producing labeled image datasets. It runs on Linux, macOS, and Windows and accepts JPEG and PNG images. Annotation can use instance-segmentation masks, polygon editing, or foreground and background point prompts, so users can choose different ways to identify objects and regions. Model-assisted labeling is included to support annotation work. Finished datasets can be exported in GeoJSON, CSV, PNG or JPEG mask files, or as a labeled image directory. These outputs cover structured geographic data, tabular data, mask images, and organized folders. API access is available for programmatic workflows. The project is accessed through its website, and its free, open-source model means there is no paid license listed. segmenteverygrain is focused on image annotation and dataset preparation rather than broad image editing. Its combination of common image formats, several labeling approaches, model assistance, multiple export options, and cross-platform desktop support suits people preparing image data for later analysis or machine-learning workflows.

Who it suits

It suits researchers, developers, and teams creating labeled image datasets on Linux, macOS, or Windows. It is also useful for users who need model-assisted annotation, API access, and exports in several structured or image-based formats.

Getting started

1. Open the segmenteverygrain project website
2. Use a Linux, macOS, or Windows computer
3. Load JPEG or PNG images
4. Create labels with masks, polygons, or point prompts
5. Export the dataset in a supported format

Verdict

Pick segmenteverygrain for free, open-source image labeling with model assistance and flexible dataset exports. It is a strong fit when cross-platform desktop support and API access matter. Look elsewhere if you need a broader media-editing suite or input formats beyond JPEG and PNG.