The OCR example uses the full capabilities of the browser environment. A quick scan shows html, canvas, events, XmlHTTPRequest, and JSON.parse on the client sid

The OCR example uses the full capabilities of the browser environment. A quick scan shows html, canvas, events, XmlHTTPRequest, and JSON.parse on the client side. What the python "server" exactly uses isn't completely clear, but it includes numpy, and probably some ANN library. So yeah, it's a bit of a stretch to compare that to 500 lines of stdlib-only C.