Not using transformers, but we do object detection in the browser with small quantized yolo models that are about 7mb and run at 30+ fps on modern laptops via tensorflow.js and onnxruntime-web.

Lots of cool demos and real world applications you can build with it. Eg we powered an AR card ID feature for Magic: The Gathering, built a scavenger hunt for SXSW, a test proctoring assistant (to warn you if you’re likely to get DQ’d for eg wearing headphones), and a pill counter for pharmacists. Really powerful for distribution to not make users install an app or need anything other than their smartphone.