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(...

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 will try to give as much details I can about this project. First of all sorry about my English because it's not my native language. It's not directly a question, is about your opinion for the ...

Content Script can be injected programatically or permanently by declaring in Extension manifest file. Programatic injection require host permission, which is generally grant by browser or page action....

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.)—...

I need to match all domain extensions for a simple Firefox extension I am writing. For example, I need to the extension to run on: https://example.com https://example.org https://example.net I do ...

How can I avoid the following error and why do I get it? Edit: Maybe I have to ask how I can make objects from a privileged scope visible to a less privileged scope. My goal is to export/return ...

I am developing a Chrome extension to use with my own Web-application, processing Web-pages (including cross-domain ones), loaded into iFrame on my application's main page. So I have to send message, ...

My extension is supposed to load a content script, searchTopic.js, only after the page it's injected into has already fully loaded (yes, I have set "run_at" to "document_end" in the extension manifest)...

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, ...

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 simply sending this message from background to contentScript , The content is supposed to listen for this message and execute the function . My contentScript.js : function clickButton() { const ...

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 ...