Content script chrome extension

Example Broswer ExtensionThis is an example of a browser extension that demonstrates the basics of working with content scripts, background scripts, and browser actions. The extension changes the background color of all paragraphs () on a webpage.When a webpage is loaded, the content script (content.js) runs and changes the background color of all elements to gray (#CCC).When the user clicks the extension button in the Chrome toolbar, the background script (background.js) sends a message to the content script.The content script receives the message and changes the background color of all elements to purple (#F0C).Filesmanifest.json: The configuration file that defines the extension's permissions, scripts, and behavior.background.js: The background script that listens for the browser action button click and sends a message to the content script.content.js: The content script that manipulates the DOM by changing paragraph colors and listens for messages from the background script.icon.png: The icon for the browser action (not included, you need to add your own icon).Installation and Testing (for Chrome)Clone or Download the repository containing the extension files.Open Chrome and navigate to chrome://extensions/.Enable Developer mode by toggling the switch in the top right corner.Click on "Load unpacked" and select the folder containing the extension files.The extension icon should now appear in the Chrome toolbar.Viewing LogsContent Script Logs: Open the webpage where the content script runs, right-click, and select Inspect to open Developer Tools. Go to the Console tab to see logs from content.js.Background Script Logs: Open chrome://extensions/, find your extension, and click on the "Service worker" link to

Content scripts are a powerful feature of Chrome extensions that allow you to interact directly with web pages. This guide will walk you through creating and implementing content scripts in your Chrome extension.What are Content Scripts?Content scripts are JavaScript files that run in the context of web pages. They can read details of the web pages the browser visits, make changes to them, and pass information to their parent extension.If you're new to Chrome extension development, start with our guide on How to Create Your First Chrome Extension.Creating and Implementing Content Scripts1. Create the Content Script FileFirst, create a new file in your extension's directory, typically named content.js.2. Write Your Content ScriptHere's a basic example of a content script:console.log('Content script loaded');// Change the background color of the pagedocument.body.style.backgroundColor = 'lightblue';// Listen for messages from the extensionchrome.runtime.onMessage.addListener((request, sender, sendResponse) => { if (request.action === 'getPageTitle') { sendResponse({title: document.title}); }});This script logs a message, changes the page's background color, and listens for messages from the extension.3. Register the Content Script in manifest.jsonTo tell Chrome about your content script, register it in your manifest.json file:{ "manifest_version": 3, "name": "My Extension", "version": "1.0", "description": "An extension with a content script", "content_scripts": [ { "matches": [""], "js": ["content.js"] } ]}4. Communicating with Content ScriptsYou can send messages to your content script from other parts of your extension, like background scripts:chrome.tabs.query({active: true, currentWindow: true}, (tabs) => { chrome.tabs.sendMessage(tabs[0].id, {action: "getPageTitle"}, (response) => { console.log('Page title:', response.title); });});Best Practices for Content ScriptsKeep them lightweight: Content scripts should

No YouTube Recommendations Chrome ExtensionOverviewNo YouTube Recommendations is a simple Chrome extension designed to improve your productivity by hiding YouTube's sidebar recommendations. With a single click on the extension icon, you can toggle the visibility of the recommendations on and off, helping you to stay focused on your intended content.FeaturesToggle Recommendations Visibility: Click the extension icon to hide or show YouTube recommendations.Dynamic Content Handling: The extension uses a MutationObserver to handle dynamic content changes on YouTube, ensuring recommendations remain hidden when you navigate between videos.Minimalist Design: The icon indicates the state of the extension (on or off) using a visual cue, making it easy to see whether recommendations are currently visible or blocked.Badge Indicator: A badge with "OFF" text appears when YouTube recommendations are blocked.InstallationClone or Download this repository:git clone Chrome and go to chrome://extensions/.Enable Developer mode by clicking the toggle in the top-right corner.Click on Load unpacked and select the folder containing this repository.The extension will now be added to Chrome.How to UseClick the extension icon in the Chrome toolbar to toggle recommendations on YouTube.When the extension is active (no badge), recommendations are visible.When the badge shows OFF, recommendations are hidden.How It WorksThe extension uses a content.js script to hide or show YouTube's recommendations based on a stored state.A background.js script manages the state and updates the extension's icon and badge text.The content.js script includes a MutationObserver that keeps recommendations hidden even when navigating dynamically on YouTube.LicenseThis project is licensed under the MIT License. See the LICENSE file for details.

Status: ArchivedThis repository has been archived and is no longer maintained.This sample is deprecated. For a Firebase v3.x sample see: Sample Chrome ExtensionThis is a demonstration of using Firebase in a Chrome extension with Firebase v2.x .Extension UsageInstalling the extension adds an icon next to the chrome address bar, which when clicked opens a popup that displays the number of times the icon has been clicked (by all users of the extension).Using Firebase in an ExtensionThe key to using Firebase in a Chrome extension is adding the following content security policy to your manifest.json:{ "content_security_policy": "script-src 'self' object-src 'self'"}Note that:You must use the wildcard domain ( not since internally the Firebase client library may need to connect to other subdomains.You must use https:// when including firebase.js and when referencing any Firebase database URLs, since Chrome extensions don't allow http script includes.Once you've done that, you can use Firebase just as you would in any other web app. See our Getting Started guide for details.LicenseMIT.

Google Analytics and Segment Helper - Chrome ExtensionThe Google Analytics and Segment Helper - Chrome Extension is designed to help site admins troubleshoot Google Analytics and Segment calls on any site.Here is the link to the project in the Chrome Extension WebstoreHere is the link to our medium post that walks through why we built the extensionTroubleshooting site analytics is an extremely tedious task, especially when you are checking multiple events and custom dimensions. This chrome extension, analyzes the webRequests made from a webpage to Google Analytics and Segment, and displays the webRequests in an easy to read manner, so users can easily see what calls are being made, and dive deeper into the specific call's metadata if they need to.Some of the unique features of this chrome extension are...Facilitates Google Analytics Tracking on Google AMP PagesWebRequests are intuitivily grouped based on Google Analytics Tracking IDs and Segment Write KeysUsers can Pop-out the Chrome Extension into it's own window for easier troubleshootingUsers can upload their Custom Dimension configuration via Chrome Extension Options for easier reference.Table of ContentsGetting StartedPrerequisites and installationNotes on internals/approachOptionsVersioningGuidelines for ContributionDependencies / AcknowledgementsContactGetting StartedPrerequisites and installationThe chrome extension is built using "Create React App" framework ( changes should be made to the files within the public or src folders.When you are ready to build, initiate the build process by runningINLINE_RUNTIME_CHUNK=false npm run build After the build process is complete, the build folder will have been updated.To test your latest changes, within your chrome browser type in chrome://extensions in the URL field.Make sure you turn on Developer ModeThe select Load unpacked and select the build folder.Notes on internals/approachThe tool leverages Chrome Extension components - Background script, Popup, and Options, and requires WebRequest, LocalStorage, and Tabs permissions.To make the Popup component update dynamically as network requests are made, the Popup component is development using React.js├── README.md├── node_modules├── package.json├── .gitignore├── public│ ├── background.js // Chrome Extension Background Script│ ├── index.html // Chrome Extension Popup HTML│ ├── manifest.json // Chrome Extension Manifest.json│ ├── options.html // Chrome Extension Options.html│ ├── options.js // Chrome Extension Options.js│ ├── gaConfigSample.js // Sample Custom Dimension configuration│ └── images // image assets - favicon└── src ├── App.css // React App CSS ├── App.js // React App Main JS ├── App.test.js ├── index.css ├── index.js ├── registerServiceWorker.js ├── common │ └── Utils.js // script to retreive custom dimension mapping └── images // Popup image assetsHere is a diagram on what each of the components doOptionsBy default the extension will use generic labels for Custom Dimensions, Custom Metrics, and Content Groups.These generic labels can be updated to reflect the actual GA mappings.Then right click on the Chrome Extension and select the Options settingUpdate the following JSON to meet your

Work from extension background pages:If localhost XHRs/fetches from an extension background page don't work (despite the permission above), then it seems to be a Chrome bug (separate I think from CORS-for-content-scripts and from Could you please report the bug through and the CORS and/or extensions teams will be able to help further. (Feel free to reply with a bug number here as well.) Hr Gweaunread,Aug 24, 2020, 2:45:20 PM8/24/20to Chromium Extensions, guest...@gmail.com, cr...@chromium.org, sim...@chromium.org, rdevlin...@chromium.org, han.g...@gmail.comOn Monday, August 24, 2020 at 11:35:38 AM UTC-4, Łukasz Anforowicz wrote:CORS-for-content-script changes (that will soon begin rolling out with Chrome 85 to the Stable channel) should *not* affect the behavior of extension background pages. Only the behavior of content scripts should be affected. Is it correct to assume that no extension page will be affected by this change?That is, any page whose URL starts with chrome-extension://Charlie Reisunread,Aug 24, 2020, 4:02:59 PM8/24/20to Inter Net, Chromium Extensions, Łukasz Anforowicz, Simeon Vincent, Devlin CroninEnable:--force-empty-corb-allowlist--enable-features=OutOfBlinkCors,CorbAllowlistAlsoAppliesToOorCorsDisable:--disable-features=CorbAllowlistAlsoAppliesToOorCors--enable-features=OutOfBlinkCorsHope that helps,CharlieCharlie Reisunread,Aug 24, 2020, 4:05:48 PM8/24/20to Hr Gwea, Chromium Extensions, guest...@gmail.com, Simeon Vincent, Devlin Cronin, han.g...@gmail.comCorrect, chrome-extension:// pages should be unaffected.Charlie