Zero-latency performance: Blocks trackers and forces instant rendering by bypassing loaders.
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// ==UserScript==
// @name PureRender
// @namespace https://github.com/wandersons13/PureRender
// @version 0.1
// @description Zero-latency performance: Blocks trackers and forces instant rendering by bypassing loaders.
// @author wandersons13
// @match *://*/*
// @run-at document-start
// @grant GM_addStyle
// @grant GM_getValue
// @grant GM_setValue
// @grant GM_registerMenuCommand
// @license GNU
// ==/UserScript==
(function() {
'use strict';
const currentHost = window.location.hostname;
const excluded = GM_getValue('excluded_sites', []);
if (excluded.some(site => currentHost.includes(site))) return;
const blockedKeywords = [
'google-analytics',
'googletagmanager',
'facebook.net',
'adservice',
'telemetry',
'analytics.js',
'doubleclick'
];
const shouldBlock = (url) => {
if (!url || typeof url !== 'string') return false;
for (let i = 0; i < blockedKeywords.length; i++) {
if (url.indexOf(blockedKeywords[i]) !== -1) return true;
}
return false;
};
const nativeFetch = window.fetch;
window.fetch = function(input, init) {
const url = typeof input === 'string' ? input : (input?.url || '');
if (shouldBlock(url)) return Promise.reject(new Error('Blocked by PureRender'));
return nativeFetch.apply(this, arguments);
};
const nativeOpen = XMLHttpRequest.prototype.open;
XMLHttpRequest.prototype.open = function(method, url) {
if (shouldBlock(url)) {
this.send = () => {};
return;
}
return nativeOpen.apply(this, arguments);
};
GM_addStyle(`
html, body {
display: block !important;
visibility: visible !important;
opacity: 1 !important;
}
#preloader, .preloader, #loader, .loader, #loading, .loading,
[class*="spinner"], [id*="spinner"], .loading-overlay {
display: none !important;
opacity: 0 !important;
visibility: hidden !important;
pointer-events: none !important;
}
`);
window.addEventListener('load', () => {
try {
const bodyStyle = getComputedStyle(document.body);
if (bodyStyle.overflow === 'hidden') {
document.body.style.setProperty('overflow', 'auto', 'important');
document.documentElement.style.setProperty('overflow', 'auto', 'important');
}
} catch (e) {}
}, { once: true });
GM_registerMenuCommand("🚫 Exclude this site", () => {
if (!excluded.includes(currentHost)) {
excluded.push(currentHost);
GM_setValue('excluded_sites', excluded);
location.reload();
}
});
GM_registerMenuCommand("🔄 Reset Exclusion List", () => {
GM_setValue('excluded_sites', []);
location.reload();
});
})();