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This question is related to my question here, but it is still slightly different. However, it still concerns the problem that listeners must be registered during the first synchronous run, while the ...
Tensai's user avatar
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1 answer
116 views

Let's say I'm creating a browser extension using MV3. This question involves the background service and the chrome.tabs.onRemoved event as an example, but presumably this would apply to other types of ...
Garret Wilson's user avatar
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53 views

My understanding from the WXT documentation is that if I have a script named entrypoints/sidepanel/index.ts, this will be an "unlisted script". But if I rename it to entrypoints/sidepanel/...
Garret Wilson's user avatar
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2 votes
2 answers
57 views

I'm trying to set a cookie in the popup page of my extension to no avail. I've tried two different methods... First I used document.cookie, which doesn't do anything... document.cookie = "SID=...
br441's user avatar
  • 55
0 votes
1 answer
118 views

I have an iframe loading inside an extension page but unfortunately the document inside the iframe embeds its own iframes whose Content-Security-Policy I still can't circumvent with ...
3rdTim's user avatar
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0 answers
22 views

I wrote simple chromium extension where I define command with keyboard shortcut: "commands": { "copy-to-clipboard": { "suggested_key": { "default&...
matkor's user avatar
  • 1
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0 answers
29 views

Unfortunately, Safari does not support 'webNavigation.onHistoryStateUpdated', but i need it to be working in web extension. I had an idea of wrapping history.pushState() that will call ...
4ntoine's user avatar
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0 answers
219 views

I'm trying to create a web extension using Web Audio API and Essentia.js. Basically, the process I'm currently focused on is: User inputs an audio file from device; File is converted to the ...
tymurmchyk's user avatar
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0 answers
73 views

I recently converted a web extension to manifest v3. The extension is supposed to work in all browser, notably both chrome and firefox. It should always display a badge text, independent of the ...
tobib's user avatar
  • 2,504
1 vote
1 answer
120 views

How can I include Papaparse so I can use it in Web Extension Javascript code? I know this might be obvious to any experienced JavaScript programmer, but I am not very experienced with JavaScript. ...
Mark B's user avatar
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1 answer
35 views

For my web extension I would like to have a "debug mode" which makes troubleshooting issues with the extension easier. By default this debug mode should be disabled, but it should be ...
Marcono1234's user avatar
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0 answers
22 views

For a web extension messages.json translation file, is it possible that a translation includes another translation? That would be useful when you want to avoid duplication. For example something like: ...
Marcono1234's user avatar
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1 answer
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I know I'm a little late to the game and have only just started porting my own extension from manifest v2 to v3, but I'm wondering why no one has pointed this out yet. At least I haven't found ...
Tensai's user avatar
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1 answer
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I have a web extension for firefox based on manifest_version: 2. My extension interacts with the elements of a certain third-party site, sometimes modifying them or supplementing the interface with my ...
Araders's user avatar
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2 votes
0 answers
57 views

I'm trying to develop a browser extension to customize the PDF preview page. In the Stack Overflow question Chrome Extension: How to show custom UI for a PDF file, the main author of the PDF.js Chrome ...
Meo's user avatar
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0 answers
39 views

I've added the "identity" permission to my extension to implement a "Continue with Google" feature, but I'm unsure if it will trigger a new warning. If it does, my extension will ...
DeLaRoka's user avatar
  • 1
1 vote
1 answer
129 views

Trying to create a webextension, following the example from firefox bookmark-it!. I'm developing on 132.0.2 (64-bit). I think I have copied it almost word by word, but i get on my background.js script:...
gcb's user avatar
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-1 votes
1 answer
36 views

I'm trying to automate something with a browser extension, and I'm facing a problem with an input. The thing is, I can't set that specific input value to anything from the extension. If I do it ...
jhonny's user avatar
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2 votes
0 answers
99 views

I'm a novice/intermediate user of typescript, so thanks in advance for any patience and assistance. Chrome/web extensions' content scripts have access to a very limited subset of extension APIs and I'...
crunk1's user avatar
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1 answer
72 views

When all_frames: true is set in manifest.json, the content script runs on all frames of the target page, but when a message is sent to the content script from another script, I would like to know how ...
FoxRefire's user avatar
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1 answer
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Suppose I'm maintaining a WebExtension, with a Manifest V2 file. My extension has a background.js script which sets all sorts of things up. Now, I want to access arbitrary key-value pairs from my ...
einpoklum's user avatar
  • 137k
0 votes
1 answer
65 views

I am writing a chrome extension to get the lyrics of the current song playing on spotify. The background.js file is not recognizing when a tab is opened. console.log("Hi"); chrome.action....
DamilolaOwonibi's user avatar
  • 13
0 votes
1 answer
127 views

I'm working on a browser extension called Stack Me First where I add slightly longer badge text. But the first few letters of the text are important to be visible. Currently the badge text is aligned ...
Gangula's user avatar
  • 7,800
1 vote
0 answers
104 views

I'm going to implement a simple web extension for my personal needs (currently for Chrome, but I consider moving to Firefox and abandon the former), and this extension only requires the history and ...
terrorrussia-keeps-killing's user avatar
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1 vote
1 answer
124 views

Problem: The content_scripts specified in the manifest.json of a WebExtension are only applied to the first page loaded in a window created by the extension regardless of how non-specific my matches ...
masukomi's user avatar
  • 11k
0 votes
1 answer
282 views

I have built a web extension for Chrome and Firefox. After that, I wanted to be able to use it on Safari as well. For that, I used the xcrun command with the option safari-web-extension-converter. Now,...
Luc Antoni's user avatar
  • 1
1 vote
0 answers
46 views

If you use your browser's devtools you can easily see the JSON as a response to an XHR request in the Networking tab. How to access the same JSON in your own Javascript, e.g. from the context of an ...
ALT's user avatar
  • 23
2 votes
0 answers
711 views

I have a dark mode extension that injects a CSS file into a website. It works fine for all other browsers (Edge, Chrome, Opera, etc) except for Firefox where the user has to manually select the ...
Ryan Luu's user avatar
  • 599
2 votes
1 answer
817 views

I have been working on porting this manifest v2 Chrome extension to manifest V3 and while I did port the extension through changing the structure in the manifest file and replacing the background.js ...
Michael Gunter's user avatar
  • 93
0 votes
1 answer
47 views

Working on library, which executes differently in different contexts/pages i.e Popup, Options, Devtools, ContentScript & Windows for which we need to know which context the library is running in ...
bhavya_w's user avatar
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0 votes
1 answer
55 views

I am working on a library which needs to be called & executed in the background script only. How to check if the library is being executed in background script only ? So, something like this :.. ...
bhavya_w's user avatar
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0 votes
0 answers
58 views

I am creating a web application in ReactJS, and I want to access Chrome APIs such as chrome.proxy, chrome.management, and chrome.tabs in my web application. function App() { const onProxyConnect = ()...
Ahmed Faraz's user avatar
  • 1
1 vote
0 answers
240 views

This is my chrome manifest.json file and it works perfectly fine for chrome, but when i convert the chrome extension to safari extension using xcrun safari-web-extension-converter ./my-chrome-...
Shahed's user avatar
  • 2,100
1 vote
1 answer
513 views

I am a student and I'm in internship. Here is the project we are working for : On a web application, we need the user to authenticate and signing documents with his/her Belgian eID. We think of using ...
Rikako's user avatar
  • 31
0 votes
1 answer
131 views

I'm building a cross-browser extension. I see that Firefox doesn't support yet service workers, while they are mandatory for Chrome. So, I was making some tests in Chrome but when I try to build the ...
Fabrizio's user avatar
  • 3
1 vote
1 answer
224 views

I finished writting my first extension and it works as I programmed it, but after completing it, I realised I made a mistake in its design, currently its designed to alert me before a event occurs (...
Ralf_Reddings's user avatar
  • 1,777
0 votes
0 answers
18 views

I have three tabs open, when I print activeTab, on the console I get: let activeTab = browser.tabs.query({currentWindow: true}) ... 0: Object { id: 1, index: 0, windowId: 1, … } 1: Object { id: 2, ...
Ralf_Reddings's user avatar
  • 1,777
0 votes
0 answers
65 views

I'm creating a private add-on for Firefox on Android. I can successfully launch the add-on using wex-ext run and use it, but it does not stay if Firefox is restarted. I have also created a zip file of ...
thomasa88's user avatar
  • 764
-1 votes
2 answers
181 views

I'm new to WebExtensions and trying to port a minimal example called borderify from v2 to v3. I tried the minimal step of setting manifest.json's manifest_version: 3, but I quickly learned this breaks ...
paws's user avatar
  • 1,321
0 votes
0 answers
388 views

I am writing a web extension, and one task of it is to speed up the login process on a particular page by automatically submitting the credentials if the browser autofills them. In Firefox I was able ...
RcCookie's user avatar
  • 166
0 votes
0 answers
46 views

My web extension tries to intercept a web request for a particular url, at this point I want to set a cookie for this particular url. The issue i am facing is the lag caused due to delay in getting ...
amenreet sodhi's user avatar
  • 9
0 votes
1 answer
1k views

So what I'm trying to do is, using a chrome web extension, attach to a websocket connection, instead of creating a new connection, and console log the data which is being sent and received. My issue ...
user3849771's user avatar
  • 57
2 votes
0 answers
89 views

I am trying to build a Firefox extension using Native Messaging on MacOS. I was referring to this example. When I have only one line in my background.js: let port = browser.runtime.connectNative("...
jeffma's user avatar
  • 51
1 vote
0 answers
99 views

The native app described here is not working for me, errors like: Reading manifest: Warning processing XXX: An unexpected property was found in the WebExtension manifest. Problematic XXX fields: ...
Tamás Horváth's user avatar
  • 72
0 votes
0 answers
27 views

I'm trying to make a Firefox extension that sends you to a webpage when an offending word is found in the document title. I already have a webpage that I want to send them to, but document.location....
MrGenie151's user avatar
  • 1
1 vote
0 answers
98 views

Is it possible to add a border around the extension badge for a web extension?. I have developed a web extension called Stack Me First, I want the extension badge to have a border around it which I ...
Gangula's user avatar
  • 7,800
4 votes
0 answers
428 views

I am trying to create a Safari Web Extension that leverages a web service where authentication is required. My goal is to reproduce what is already working in both Chrome and Firefox, meaning I should ...
Dalzhim's user avatar
  • 2,098
0 votes
0 answers
51 views

I've recently built a script extension for Chrome using Manifest Version 3, and it's been working smoothly. Now, I'm attempting to create a Firefox version of the same extension. To do this, I'm using ...
salsan's user avatar
  • 569
2 votes
0 answers
112 views

I'm working on a web extension and trying to implement Google Anaytics 4 into the extension (not GTM). I was able to successfully implement this functionality and tested it in Firefox successfully. ...
Gangula's user avatar
  • 7,800
0 votes
1 answer
104 views

I'm trying to add some custom command using my homemade plugin like the documentation say we can: https://www.selenium.dev/selenium-ide/docs/en/plugins/plugins-getting-started It is working fine, I am ...
vicovicovico's user avatar
  • 548

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