check WebP is lossless or not
npm i webp-is-lossless
import { webpIsLossless } from "webp-is-lossless";
function showIsLossless(file) {
const reader = new FileReader();
reader.readAsArrayBuffer(file);
reader.onload = function () {
const isLossless = webpIsLossless(new Uint8Array(reader.result));
console.log(isLossless);
};
}