itk.js provides ITK 5.1 RC 3 compiled with Emscripten.
itk.js minimizes the need to learn JavaScript. If you have a segmentation pipeline written ITK / C++, itk.js makes it easy to build it and run it in a browser.
To build it, npx itk-js build . as described here:
https://insightsoftwareconsortium.github.io/itk-js/examples/hello_world_node.html
Here is what a simple test pipeline looks like (note that it is only standard ITK /CMake / C++):
https://github.com/InsightSoftwareConsortium/itk-js/tree/master/test/MedianFilterPipeline
Here is how to call it: