Firefox Community Forum

Can I change colors of individual tabs? without an extension?

Maybe add an option to right click and select a color wheel or color selector to assign a color to that particular tab. Especially if its bookmarked or pinned.

The settings page is vaguely providing an option to turn off this feature. I don't care what you want to call it, be it AI/ML/chatbot, it's not related to browsing the internet and I don't want it. I don't want it to consume ANY resources of my computer, I don't want it to exist in my computer unless I EXPLICITLY use it, I don't want to be FORCED to go and search everything in about:config page to get it completely (probably) deactivated. Provide a button that DOES deactivate and hide (without running it in the background either) the whole AI/ML/chatbot integration. I don't want to use it, again, I don't want it being shoved in my face or my computer against my will. Firefox IS a web browser. Otherwise, let's stop making any kind of websites (eshops, newspapers, social media and other) since they will not be browsed by people that want to browse the web, since the web browser decided to put AI in front of everything to consume everyone's content and dictate their own design, alignments caused by bias disagreements etc etc.

Thanks to the help received here and in the Reddit group I've been able to transfer almost all of my old colour and layout tweaks to a new intallation of Firefox (v133) on a new PC (running Windows 10). There's one thing that I haven't succeeded with though: I'd like to change the colour of the text in a tab when that tab becomes the active one.

This is the coding I'm using to change the tab's background colour when it's selected:

1. TabsToolbar .tab-background[selected]{

background: white !important; }

This works perfectly. But when I tried adding the line

color: black !important;

It had no effect. I'd be grateful for any thoughts. Many thanks.

For a while now firefox has been unable to enter fullscreen when pressing F11. Instead all it does is move the "Scroll forwards", "Open a new tab", and "List all tabs" button over slightly (The buttons on the top right, next to the minimize and close buttons).

I don't know what's going on with firefox.

Firefox Version 142.0.1 (64-bit)

1. 1. 1. Setting Up Grok as an AI Chatbot in the Firefox Sidebar

Mozilla Firefox includes an experimental-turned-standard feature (introduced around version 131 and stabilized by version 133+) that allows users to integrate AI chatbots directly into the browser's sidebar for quick access while browsing. This provides a persistent chat interface without needing to switch tabs constantly. Natively, Firefox supports providers like ChatGPT (OpenAI), Gemini (Google), Claude (Anthropic), Le Chat (Mistral), and others through a dropdown selector. However, Grok (from xAI) is not included in the official list and must be added manually as a custom provider.

The screenshot you provided shows the standard Firefox "Proceed with Caution" warning when accessing `about:config` (the advanced preferences page), alongside an open tab at `https://grok.com/` displaying the SuperGrok interface. This strongly indicates the setup process for adding Grok via a custom configuration tweak, which loads the full Grok web app into the sidebar (essentially embedding `grok.com` in a framed view).

1. 1. 1. 1. Requirements and Context

- **Firefox Version**: Version 133 or later (as of early 2026, most users will have a newer version; check via Menu > Help > About Firefox). - **Account Needs**: You'll need an xAI/Grok account (free or SuperGrok/Premium+ subscription) for full access. Logging in within the sidebar will persist if cookies are allowed. - **Limitations**:

 - Only **one** chatbot can be active in the sidebar at a time.
 - Custom providers like Grok load the full web version, so interactions send data directly to xAI (no Mozilla intermediation, preserving Grok's native features like image generation, voice mode if available, or real-time search).
 - Performance may vary; the sidebar uses an embedded view, which could consume more resources than native integrations.
 - Privacy Implications: All queries go straight to the provider's servers. Review xAI's terms for data handling.
 - Persistence: The setting generally survives restarts, but closing/reopening the sidebar or browser resets might occasionally require re-login.

- **Nuances and Edge Cases**:

 - If you're on a free Grok plan, usage quotas apply (higher with SuperGrok).
 - Features like page summarization (highlight text > right-click > AI shortcuts) work if Grok supports context from the main tab.
 - Mobile Firefox does not support this sidebar feature.
 - If the sidebar doesn't appear after setup, ensure it's enabled in settings.

1. 1. 1. 1. Step-by-Step Setup Instructions

1. **Update Firefox (Recommended)**:

  - Go to Menu (three lines) > Help > About Firefox.
  - It will check for updates automatically; install any available.

2. **Access Advanced Preferences**:

  - In the address bar, type `about:config` and press Enter.
  - You'll see the "Proceed with Caution" warning (matching your screenshot).
  - Check the box for "Warn me when I attempt to access these preferences" if desired, then click **Accept the Risk and Continue**.

3. **Configure the Custom Provider for Grok**:

  - In the search bar at the top, type `browser.ml.chat.provider`.
  - If the preference exists, double-click it.
  - If it doesn't exist, click the "+" button to create a new string preference named `browser.ml.chat.provider`.
  - Set the value to: `https://grok.com/` (or `https://grok.x.ai/`—both typically work, but `grok.com` aligns with your screenshot and SuperGrok branding).
  - Click the checkmark or press Enter to save.

4. **Enable and Open the Sidebar**:

  - Go to Menu > Settings (or Preferences) > General tab.
  - Scroll to "Browser Layout" section.
  - Check **Show sidebar** if not already enabled.
  - Close settings.
  - Click the **Sidebar icon** in the toolbar (it looks like a panel; if missing, right-click toolbar > Customize Toolbar > drag it in).
  - In the sidebar, look for the **sparkle/AI chatbot icon** (or it may auto-load the chat interface).

5. **Access and Use Grok**:

  - The sidebar should now load Grok directly.
  - Log in to your xAI account if prompted (for full features like Grok 4 access or higher quotas).
  - Start chatting via the "Ask Grok" input at the bottom.
  - Optional shortcuts: Highlight text on a page > right-click > options like "Summarize," "Explain," etc. (Grok will process based on context).
  - To switch back to a native provider later: Return to `about:config`, clear or change the `browser.ml.chat.provider` value, then select from the dropdown in the sidebar.

1. 1. 1. 1. Troubleshooting and Alternatives

- **If Grok Doesn't Load**:

 - Clear the preference value and restart Firefox.
 - Ensure no extensions block iframes or cookies.
 - Try alternative URLs like `https://x.com/i/grok` if issues persist.

- **Reverting Changes**:

 - Set `browser.ml.chat.provider` to blank, or delete the preference.
 - Native options will reappear in the selector.

- **Alternatives if Native Setup Fails**:

 - **Extensions**: Search Firefox Add-ons for "Grok Sidebar" or similar (e.g., dedicated Grok integrations exist, often free).
 - **PWA Installation**: Visit `grok.com`, click the install icon in the address bar to add as a standalone app window.
 - **Other Browsers**: Edge/Chrome have similar sidebar AI features (e.g., Copilot or extensions) with easier Grok support.

- **Implications for Daily Use**:

 - Great for multitasking (e.g., ask Grok about a webpage without leaving it).
 - Enhances productivity but increases browser resource use.
 - As an experimental feature origin, it may evolve—Mozilla could add official Grok support in future updates.

This method provides the most integrated experience matching your screenshot. If you encounter issues or need clarification on a step, provide more details!

How can I change the default app opened for mailto links?

There's guidance for Firefox on desktop on this issue, but not on mobile.

https://support.mozilla.org/en-US/kb/change-program-used-open-email-links

Hello! I just moved to Firefox a week ago and so far, I'm really happy I did. Nearly everything is better. That being said, there's one feature I used all the time on Chrome that I can't get working right here, and that's auto scroll. On Chrome, it worked no problem. When I clicked in the scroll wheel, it turned on auto scroll and would stay enabled until I clicked it again. One Firefox though, this isn't working right. When I click in the wheel here, it enables for a quick second before disabling itself. It's super annoying and makes it unusable. I found out it's because scrolling on the scroll wheel cancels auto scroll on Firefox, but not on chrome. So how do I make it so scrolling on the scroll wheel doesn't break auto scroll? Thanks in advance!

The keyboard shortcut to take screenshots [Ctrl + Shift + S] used to work a few weeks ago but it has stopped working for quite a while now. Doesn't work on any site, I can only create screenshots by right clicking and pressing the button manually.

My friend recommended this browser to me. When I tried to customize it, I couldn't find an option to change the hotkeys to my preference. I consider this feature important since I use it for work. Can I do this somehow, and is there any plan to add such a feature to the settings?

I'm a user of the new "Ask AI" feature in Firefox, and while I appreciate the convenience of having an AI assistant in the browser, I've noticed a significant limitation that prevents the feature from being truly useful.

The Problem

Currently, when you right-click and select the "Ask AI" option, the prompt sent to the chatbot only includes the selected text and the page title. It completely omits the page's URL. This is the prompt that is sent:

* * I’m on page “<tabTitle>Get Support | Mozilla Support</tabTitle>” with “<selection></selection>” selected.

• * Please summarize the selection using precise and concise language. Use headers and bulleted lists in the summary, to make it scannable. Maintain the meaning and factual accuracy.

This is a major issue because without the URL, the AI cannot access the full context of the page. It can't scrape the content, analyze the structure, or understand the full context of the selected text, which is often crucial for generating accurate and comprehensive summaries or answers. The feature, as it is, relies entirely on the user manually selecting a large block of text, which is clunky and often insufficient.

Proposed Improvements

   Include the URL in the Prompt: The most critical improvement would be to automatically include the page's URL in the prompt sent to the AI. This would allow the AI to properly "see" and interact with the full page, making tasks like "Summarize" much more effective.

   Allow Custom Prompt Editing: A second, highly beneficial feature would be the ability for users to customize the prompt before it's sent. This would give users more control over the AI's output and enable more creative and specific uses of the feature beyond the pre-set options. This would also allow users to manually insert the URL if needed, as a workaround for the current limitation.

These changes would transform the "Ask AI" feature from a novelty that only works on selected text to a genuinely powerful tool for research, content analysis, and productivity.

Thank you for considering this request.

Hi! I'm on a relatively new to me (refurb) desktop computer running Win 10 Pro (64 bit)* and Firefox 143.0.3.

In the past week both Firefox and Win 10 have updated. I don't know what happened, but now when I boot up or reboot, my computer opens to MS Edge. Yuck!

Every single time I have to reinstall Firefox! Once I do that, all is well again. I have all my bookmarks back, etc.

It also keeps changing my "default to Firefox" browser setting, turning it OFF, while I'm using Firefox. I repeatedly have to keep going in and clicking to make FF to the default browser again.

Why is it doing this? How do I stop it?

Anyway, I know I can't delete Edge or uninstall it. How do I shove it back into the black hole it has lived in until now?

Thanks very much in advance for any help offered. :)

KathyOnOBX

• (Nope - computer not eligible to upgrade to Win 11. My processor isn't fast enough, I think.)

When right-clicking on the Firefox icon in the Windows task bar one has the option to "pin" items by hovering over an entry in the "frequent" list and clicking on the little pin needle icon (with the hover text "Pin to this list").

How can I pin items that are not in the frequent list? I have tried for weeks to make an important page a frequent one by making sure to visit it daily but it never makes it to the list.

Every time I login on my computer, there is already an open Firefox webpage with a dialog box asking me if I want Firefox to be my primary default browser. Once I click "Set a Default Browse", a Microsoft Edge webpage appears giving me a list of choices of Microsoft application to select to be my browser. Firefox is not on the list. There is also a dialog box that appears on the lower right corner of the screen showing me the steps on how to make Firefox my default browser. The choices are "Show Me How" and "No Thanks". When I click the "Show me how", I am taken to Firefox setting, once I click the "Make Default" I am taken back to the list of Microsoft applications to choose as my browser. The bottom line is I cannot make Firefox my default browser anymore. In fact, I am not even sure if I am sending this message to Firefox or Mozilla. This is the URL that I see on this https://support.mozilla.org/en-US/questions/new/firefox/form.

Would you please check and correct the problem. I cannot make Firefox my default browser. Would you check if Firefox is my default browser.

Hi All,

I would like to remove the first item from the Tab Context Menu, which is "Add Tab to New Group", and simply have "Reload Tab" as the first menu item.

I was using this code, which worked in FF 145, until the latest update (FF 147)...

#context_openANewTab,
#context_moveTabToNewGroup,
#context_moveTabToGroup,
#context_ungroupTab + menuseparator {
   display: none !important;
}

However, now there is an extra separator line at the top of the menu (see attached images).

This code also removes the top menu item, but still leaves the separator line on top:

#tabContextMenu #context_moveTabToNewGroup {
  display: none !important;
}

Is there a way to remove the first menu item without adding the separator line?

Thanks!

I feel like I've tried everything to stop Firefox from automatically opening when I start my Windows 11 computer.

I've checked: task manager, the startup folder in Windows 11 (shell:startup), The registry under "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run", Settings>Apps>Startup, and also in Firefox under Settings>"Open Firefox automatically when your computer starts up", and under "about:config">toolkit.winRegisterApplicationRestart (change value to false).

Can anyone tell me why Firefox is still automatically launching at startup of Windows 11?

In the year 2024, firefox still does not allow a simple way to set any URL you would like as the new tab url (without an extension).

Users were previously able to use extensions like NewTab override to have a relatively seamless experience changing their new tab page. However after certain changes, these said extensions can no longer set your new tab page to a local file, and can also no longer clear and focus the address bar.

I am simply requesting a feature within firefox to set a custom new tab page, without having to create any external configs, or without using any extensions. This basic feature has been available in chromium browsers for years, and firefox already includes a feature just like this for the "Homepage and new windows" setting, where it allows you to input a custom URL to a local file or site to put it as your homepage. However, this same setting for some odd reason does not exist for the "new tabs" option. Why is this?

As of now, I've had to use a manual override along the lines of this:

``` // shenanigans for setting a different new tab page const { classes: Cc, interfaces: Ci, utils: Cu } = Components; const { AboutNewTab } = Cu.import("resource:///modules/AboutNewTab.jsm", {}); // path to new tab can be a url or file const newTabURL = "file:///home/faaris/.local/packages/startpage/fazzi/index.html"; // set the new tab URL AboutNewTab.newTabURL = newTabURL; ```

this should not be needed. Having to modify files in system protected folders should not be needed for such a simple option.