Greasy Fork

// ==UserScript==// @name         Meta Snitch// @namespace    https://github.com/appel/userscripts// @version      0.2.1// @description  Print page meta data like title, meta keywords, meta description, canonical URL, hreflang tags, OG tags and twitter cards to the console. Also detects different versions of Google Analytics and prints the measurement ID if it can find it.// @author       Ap// @match        *://*/*// @grant        none// @run-at       document-end// @license      MIT// ==/UserScript==(function () {"use strict";const labelColor = "color: #00bcd4";const labelColorError = "color: #f44336";// Ensure that it's running in the top-level browsing context and not inside an iframeif (window !== window.top) {return;}// Only check html docsif (!document.contentType.startsWith("text/html")) {return;}function isDevToolsOpen() {const devtools = function () { };devtools.toString = function () {this.opened = true;};console.debug(devtools);return devtools.opened || false;}if (!isDevToolsOpen()) {return;}console.group("Meta Tags");// Print titleconsole.log("%cPage Title%c " + document.title, labelColor, "");// Print meta keywordsvar metaKeywords = document.querySelector('meta[name="keywords"]');if (metaKeywords) {console.log("%cMeta Keywords%c " + metaKeywords.content, labelColor, "");}// Print meta descriptionvar metaDescription = document.querySelector('meta[name="description"]');if (metaDescription) {var fullDescription = metaDescription.content;var truncatedDescription = fullDescription.slice(0, 300);var displayDescription = fullDescription.length > 300 ? truncatedDescription + "..." : truncatedDescription;console.log("%cMeta Description%c " + displayDescription, labelColor, "");} else {console.log("%cNo meta description found.", labelColorError);}// Print canonical URLvar canonical = document.querySelector('link[rel="canonical"]');if (canonical) {console.log("%cCanonical%c " + canonical.href, labelColor, "");} else {console.log("%cNo canonical URL found.", labelColorError);}// Print hreflang tagsvar hreflangTags = document.querySelectorAll('link[rel="alternate"][hreflang]');if (hreflangTags.length > 0) {hreflangTags.forEach(function (tag) {console.log("%cHreflang (" + tag.hreflang + ")%c " + tag.href, labelColor, "");});}console.groupEnd();function printOgTag(properties) {let ogTagsFound = false;properties.forEach((property) => {const ogTag = document.querySelector(`meta[property="og:${property}"]`);if (ogTag) {ogTagsFound = true;console.log(`%cog:${property}%c ${ogTag.content}`, labelColor, "");}});}function printTwitterTag(names) {let twitterTagsFound = false;names.forEach((name) => {const twitterTag = document.querySelector(`meta[name="twitter:${name}"]`);if (twitterTag) {twitterTagsFound = true;console.log(`%ctwitter:${name}%c ${twitterTag.content}`, labelColor, "");}});}console.groupCollapsed("Open Graph / Twitter");// Print Open Graph (OG) tagsprintOgTag(["title", "type", "image", "url", "description"]);// Print Twitter tagsprintTwitterTag(["card", "title", "description", "image"]);console.groupEnd(); // Open Graph / Twitterconsole.groupCollapsed("Structured data");// Print Microdataconst microdataItems = document.querySelectorAll("[itemscope]");if (microdataItems.length > 0) {microdataItems.forEach((item, index) => {console.groupCollapsed(`%cItem (${index + 1})%c ${item.getAttribute("itemtype")}`, labelColor, "");const itemProps = item.querySelectorAll("[itemprop]");itemProps.forEach((prop) => {console.log(`%c${prop.getAttribute("itemprop")}%c ${prop.content || prop.textContent.trim()}`, labelColor, "");});console.groupEnd();});}// Find all ld+json script tagsconst ldJsonScripts = document.querySelectorAll('script[type="application/ld+json"]');if (ldJsonScripts.length > 0) {ldJsonScripts.forEach((script, index) => {console.group(`%cLD+JSON (${index + 1})%c`, labelColor, "");try {// Parse and then stringify the JSON with indentationconst json = JSON.parse(script.innerText);const formattedJson = JSON.stringify(json, null, 2);console.log(formattedJson);} catch (e) {console.log("%cError parsing JSON%c" + e.message, labelColorError, "");}console.groupEnd();});} else {console.log("%cNo LD+JSON scripts found.", labelColorError);}console.groupEnd(); // Structured data// Get all script tagsconst scripts = Array.from(document.getElementsByTagName("script"));// Regular expressions for different versions of Google Analyticsconst versions = [{key: "GASC",name: "Google Analytics Synchronous Code (ga.js/2009)",regex: /_gat\._getTracker\(["'](UA-[^"']+)["']\)/},{key: "GAAC",name: "Google Analytics Asynchronous Code (ga.js/2009)",regex: /_gaq\.push\(\['_setAccount', ['"](UA-[^"']+)['"]\]\)/},{key: "UAT",name: "Universal Analytics Tag (analytics.js/2013)",regex: /ga\('create', ['"](UA-[^"']+)['"],/},{key: "GST",name: "Global Site Tag (gtag.js/2017)",regex: /gtag\('config', ['"](UA-[^"']+)['"]/},{key: "GA4",name: "Google Analytics 4 (GA4/2020)",regex: /gtag\('config', ['"](G-[^"']+)['"]/},{key: "GTM",name: "Google Tag Manager",regex: /(GTM-\w+)/}];// Iterate over all script tagsscripts.forEach((script) => {// Convert HTMLScriptElement to stringconst scriptString = script.innerHTML;// Iterate over all versions of Google Analyticsversions.forEach((version) => {const match = scriptString.match(version.regex);if (match) {if (version.key === "GA4" || version.key === "GTM") {console.log(`[GA] %c${version.name}%c ${match[1]}`, labelColor, "");} else {console.log(`[GA] %c${version.name} ${match[1]}`, labelColorError);}}});});})();