Draw a digit.

WebGPU trains a 196→128→10 network on all ten MNIST classes. Draw any number from zero to nine; your strokes are normalized to the same 14×14 representation the network learned.

loading MNIST

Draw here

Use your mouse, trackpad, or finger.

Network prediction

Training the classifier…

The drawing pad unlocks as soon as training finishes.

This tiny image is the exact 196-value input sent to WebGPU.

Epoch0 / 30

Train accuracy—

Test accuracy—

Train time—

196 → 128 → 10

Preparing handwritten examples…