A: Open DevTools, go to Application -> Storage and press "Clear site data".
Q: What if I get sbox_fatal_memory_exceeded?
A: You don't have enough RAM to run SD. You can try reloading the tab or browser.
Q: How did you make it possible?
A: In order to run it, I had to port StableDiffusionPipeline from python to JS. Then patch onnxruntime and emscripten+binaryen (WebAssembly compiler toolchain) to support allocating and using >4GB memory. Then WebAssembly spec and V8 engine.