Site Optimization with FPS Counter

Optimize site performance and display FPS counter
当前为 2024-02-06 提交的版本，查看最新版本。
换行
// ==UserScript==
// @name         Site Optimization with FPS Counter
// @namespace    http://tampermonkey.net/
// @version      0.3
// @description  Optimize site performance and display FPS counter
// @author       Kyu
// @match        *://*/*
// @license      MIT License
// @grant        none
// ==/UserScript==

(function() {
    'use strict';

    // Display optimization message
    const messageElement = document.createElement('div');
    messageElement.id = 'optimizationMessage';
    document.body.insertBefore(messageElement, document.body.firstChild);

    messageElement.textContent = 'Otimizando seu site...';
    setTimeout(() => {
        messageElement.textContent = 'Concluído';
        setTimeout(() => {
            messageElement.remove();
        }, 1000);
    }, 3000);

    // Measure FPS
    const fpsElement = document.createElement('div');
    fpsElement.id = 'fpsCounter';
    document.body.insertBefore(fpsElement, document.body.firstChild);

    const fpsMeasurement = function() {
        const now = window.performance.now();
        const frameTime = Math.min(1000 / 60, 1 / (now - frame));
        fpsElement.textContent = `FPS: ${Math.round(1 / frameTime)}`;
        frame = now;
        requestAnimationFrame(fpsMeasurement);
    };

    let frame = window.performance.now();
    requestAnimationFrame(fpsMeasurement);

    // Optimize site performance
    const originalCreateObjectURL = window.URL.createObjectURL;
    window.URL.createObjectURL = function(blob) {
        const revokeObjectURL = originalCreateObjectURL.apply(this, arguments);
        setTimeout(() => {
            revokeObjectURL.apply(this, arguments);
        }, 10000); // Revoke after 10 seconds
        return revokeObjectURL;
    };

    const originalImageOnLoad = Image.prototype.onload;
    Image.prototype.onload = function() {
        const originalImage = originalImageOnLoad.apply(this, arguments);
        this.onload = originalImageOnLoad;
    };
})();