I'm developing a web extension in typescript. To organize the code, I would like to bundle the extension with webpack. Ideally, webpack should compile typescript and copy the resulting javascript,...

I'm developing a Firefox Extension. I added a new item to the "Tools" Menu to open my extension, but I would like to add a keyboard shortcut to open my extension (something like 'control + alt + x'...

I am developing an firefox extension using webExtensions that would help me ease my work with the scenario below. I have to click around 50-60 buttons on the site that update the task status. On c...

I have developed an add-on for Firefox and Chrome. It has content scripts. I want to access them in the browser tab's console (on Firefox the Web Console). For example, I want to enter a global var...

I am creating a WebExtension for browsers. So I found out about the browser.alarms API. It basically allows you to set a (reoccurring or one-time) alarm and a callback will be fired. Now, we've ha...

I have Web Extensions which currently runs on Chrome, Firefox and Opera. Now I'm wondering is there a way to use same code to build Safari App Extension, maybe something like PhoneGap(wrap all exi...

I'm trying to port a Web Extension that I've gotten working in Firefox to chrome and I having some problems. I need to send a message form the background script to a content script. I was using a p...

How can I turn it dark-mode? I already set the Firefox theme to dark but it didn't change...

My web extension works with Chromium browsers, Firefox, Edge, but as I understand - it is impossible now just to open the same codebase with Safari browser?

I've read the docs but can't see what the purpose of a background page is. I'm not talking about background scripts (I know what they are for), I'm referring to background HTML pages. Background H...

This seems to be the easiest thing to do, but it's just not working. In a normal browser the .html and .js files works perfectly, but in the Chrome/Firefox extension the onClick function is not per...

Many times I've faced this problem when a code will generate exception( eg. method not defined in object) it will not show up in the Firefox console. Firefox will simply skip that part of code. Af...

I'm making a WebExtension (for Firefox) that tracks lists for the user. The user can add/remove elements from a list, or switch an element from one list to another, which means the extension needs ...

Since the Firefox Australis interface, there are no more toolbar buttons to toggle the Bookmarks and History sidebars with one click. There is the "show sidebars" toolbar button, but it displays an...

I'm starting to work on a small firefox plugin, it's a basic js script, no problem on this side. I've made a few successfull tests, and had a a few satisfying results. But starting yesterday, i'm ...

I know with Chrome I can use snippets to manually run some JavaScript code on a webpage. But this required manually executing the snippet. Is there a way to have some JavaScript code that my browse...

I am working with a browser extension project and want to have a different URL used in background.js during development time and build time. I want to do this without having to remember to change t...

From a Linux bash script, I want to read the structured data stored by a particular Firefox add-on called FB-Purity. I have found a folder called .mozilla/firefox/b8eab5j0.default/storage/default/...

I want to open extensions in browser tab as a normal html page so that I can automate it using selenium WebDriver. In firefox this can be done using link like this - moz-extension://f1b30486-cd88-4...

When a site receives high traffic, the tab in Mozilla Firefox stops loading and displays this error message "PR_CONNECT_RESET_ERROR" as shown in screen shot. What I want is, the tab should conti...

When trying to load the chrome extension in mozilla firefox. I have error: Reading manifest: Error processing options_page: An unexpected property was found in the WebExtension Reading manifest...

The older Firefox "Add-ons" API had a built-in unittest layer sdk/test that allowed testing. This doesn't seem to be available any more. Additionally the use of "package/require" allowed code to b...

I am building a Firefox addon using Rust. I am trying to insert HTML and do stuff on specific pages. Apparently, a content script is the thing I want to use. My content script is: import("../crate...

I'm developing Firefox add-on and problem is: When I change code in add-on I must manually reload add-on folder in browser: 1. Go to about:debugging 2. Click on "Load temporary add-on" find add-o...

I'm porting a Chrome extension to Firefox WebExtensions and I'm stuck on finding a workaround for chrome.declarativeContent.onPageChanged. My FF Webextension contains a Page Action that must be sh...