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Dirty script to convert a WEBP base64 URI to a JPG base64 URI
此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.icu/scripts/426288/929824/WebpToJpg.js
// ==UserScript==
// @name WebpToJpg
// @author RobotOilInc
// @version 2.0
// @description Dirty script to convert a WEBP base64 URI to a JPG base64 URI
// @homepageURL http://greasyfork.icu/en/scripts/426288-webptopng
// @supportURL http://greasyfork.icu/en/scripts/426288-webptopng
// ==/UserScript==
/* jshint esversion: 8 */
const WebpToJpg = async function (base64Data) {
return await new Promise(resolve => {
const image = new Image();
image.src = base64Data;
image.onload = () => {
const canvas = document.createElement('canvas');
const context = canvas.getContext('2d');
canvas.width = image.width;
canvas.height = image.height;
context.drawImage(image, 0, 0);
resolve(canvas.toDataURL('image/jpeg'));
};
});
};