I’m building a Chrome extension for Gmail using InboxSDK v2. My registerComposeViewHandler works perfectly when I click Pop out reply (the floating compose window), but it never fires for an inline ...

I have a browser extension that I'm trying to port on Safari. On some devices/version of the browser (mainly on mobile versions), the following code will throw an error: await chrome.storage.local.set(...

Prevent Chrome Native Downloads for Intercepted Links in Manifest V3 Extension I'm building a Chrome extension using Manifest V3 to intercept file download links (like .zip, .exe, .mp4, etc.)—...

My extension is designed to control music playback on the music.yandex.by web-site. When user click buton in popup I am passing message from background to content script. While the music is playing, ...

So I have this project with React 19 and typescript and am using Webpack to compile my code. I have successfully added react to pop-up, but I have problems when I compile my content script (overview....

So I have a Chrome Extension that I need to update to MV3 that involves injecting Content Scripts. Via a popup the end user should be able to enable / disable which scripts should be injected, with ...

Goal I am trying to create a Chrome extension that will embed a CodeMirror Editor in the web page. I use vite for bundling the CodeMirror package and use chrome.scripting.executeScript to run my ...

I'm trying to fetch an object from the current page window via a content script. The object itself is available if I log the window/this object but when I try to access it via the content script it ...

Lets say for example .custom. Whenever I am opening the file with extensions .custom, it should open in Chrome and the content script should load. How to implement this? I have added the code below, ...

In Chrome extension content scripts it is fine to do: const myTarget = new EventTarget() myTarget.addEventListener('test', () => console.log('test1')) myTarget.dispatchEvent(new Event('test')) but ...

I wrote a userscript a while back for a specific webpage and I want to make a more polished tool using a web extension. The general idea is, Im intercepting a webpage's builtin Class, and rewriting ...

Dev tools of the site, dev tools of the service worker and background.js can open a websocket connection perfectly fine. The content scripts however, will trigger onerror, then onclose immediately. I ...

I am trying to click automatically a "don't logout button" when it appears. I managed to click it manually with a popup in the chrome-extension. But it would be nice if the button will be ...

The objects I defined in page script seem not accessible in content script for an extension. But the two scripts do share some variables such as window, document, etc. Is there a way to expose some ...

The chrome.runtime.onMessage.addListener() function is being invoked once for the first message received, but subsequently, it's being invoked multiple times, increasing with each subsequent message. ...