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How to make Firefox remember my last file upload location?

When uploading files with Firefox, I click the upload button, and the file browser window appears to upload files. For as long as I can remember, it always defaulted to t… (閱讀更多)

When uploading files with Firefox, I click the upload button, and the file browser window appears to upload files.

For as long as I can remember, it always defaulted to the last folder location that I uploaded a file, but just a few days ago, it stopped working, and always defaults to my home folder.

How can I make the upload window pop up, default to the last uploaded location? My OS is Linux Mint Cinnamon.

已解決 9 211

How to disable AI in Firefox completely?

With Firefox 144, there is unasked for/unwanted AI introduced. How do I ensure that all AI is completely disabled in my browser? I found a link describing some settings, … (閱讀更多)

With Firefox 144, there is unasked for/unwanted AI introduced. How do I ensure that all AI is completely disabled in my browser? I found a link describing some settings, but want to confirm this will disable ALL AI in the browser. I don't want it, don't trust the privacy/security holes yet to be found and would prefer it was not included in Firefox to begin with. The list I've found is:

  • user_pref("browser.ml.chat.enabled", false);
  • user_pref("browser.ml.chat.menu", false);
  • user_pref("browser.ml.chat.page", false);
  • user_pref("browser.ml.chat.shortcuts", false);
  • user_pref("browser.ml.chat.sidebar", false);
  • user_pref("browser.ml.enable", false);
  • user_pref("browser.ml.linkPreview.enabled", false);
  • user_pref("browser.ml.linkPreview.optin", false);
  • user_pref("browser.ml.modelHubRootUrl", "");

Will this do it? What about:

browser.ml.chat.nimbus

Do I need to clear that field to ensure I don't get some auto opt-in in the future as more and more of this "stuff" is put into the browser?

Why not leave Firefox as a security/privacy conscious browser and put out a separate AI browser (FirefoxML?) for those that are not as concerned. How does Mozilla ensure that no information is leaked through AI from sessions for professionals that must protect physician/patient, attorney/client information or other legally confidential information?

封存 7 488

How to never, never, never, never, ***never*** (!!!) restore previous session?

Please forgive me if this question was already answered and that I might have accidentally overlooked that answer. I'm running Firefox 144.0 (64-bit) under Debian 13 (lin… (閱讀更多)

Please forgive me if this question was already answered and that I might have accidentally overlooked that answer.

I'm running Firefox 144.0 (64-bit) under Debian 13 (linux).

I want to configure Firefox to never restore any previous session when it starts up, irrespective of how Firefox was last exited.

Even if a running Firefox session was externally killed via some sort of system command or because of a reboot, I never, never, never, never, never, never, never, NEVER (!!!) want it to restart in any previous session.

I ALWAYS (!!!) want Firefox to launch with its default start page, no matter what.

I tried all of the suggestions that I have found on line about how this might be accomplished, but with each one of them, there are cases where the previous session was restored.

I repeat, I do NOT (!!!) EVER (!!!) want the previous session to be restored, under any circumstances.

Is there a way to accomplish this?

Thank you in advance for any suggestions, and again, please accept my apology if this has been answered and I overlooked that answer.

已解決 6 221

I want to delete Preview Links.

I want to delete Preview Links. I tried going to Settings>General>Browsing, however, there is no "Browsing" section. I have a Linux Mint. I do NOT want Preview Link… (閱讀更多)

I want to delete Preview Links. I tried going to Settings>General>Browsing, however, there is no "Browsing" section. I have a Linux Mint. I do NOT want Preview Links. Thank you.

Open 4 27

New install of Debian 13, Firefox Toolbar customization does not work (Firefox ESR 128.13)

New installation of Debian 13, Firefox setup with sync on successful. However, I wanted to add hone button and a few other mods to the toolbar but when I started customiz… (閱讀更多)

New installation of Debian 13, Firefox setup with sync on successful. However, I wanted to add hone button and a few other mods to the toolbar but when I started customize the toolbar from menu pic the customization page would not work, it appeared and seemed OK but when I dragged and dropped anything it would not work. I could pickup items but they would not place in toolbar and just snapped back to the pallet. I tried several different ways to enter the customization area but it was always non-functional.

已解決 封存 3 396

How do I ELIMINATE the firefox "safe space"????????????????

Something called "safe space" just showed up in my firefox browser... I didn't want it, didn't ask for it!! PLEASE tell me HOW to get rid of it.... PLEASE!!! Moderator no… (閱讀更多)

Something called "safe space" just showed up in my firefox browser... I didn't want it, didn't ask for it!! PLEASE tell me HOW to get rid of it.... PLEASE!!!

Moderator note: This question has been edited to remove excessive new lines.

已解決 2 139

Wrong StartupWMClass on Firefox Developer Edition

`StartupWMClass=firefox-aurora` in `/usr/share/applications/firefox-devedition.desktop`, with actually `firefox-dev` for opened windows. Version: Ubuntu 25.04, GNOME 48… (閱讀更多)

`StartupWMClass=firefox-aurora` in `/usr/share/applications/firefox-devedition.desktop`, with actually `firefox-dev` for opened windows.

Version: Ubuntu 25.04, GNOME 48, firefox-devedition 143.0b2.

已解決 封存 2 266

How to prevent browser.tabs.hoverPreview.enabled from auto-resetting to "true"?

On Firefox 128.14.0esr (build 20250811113756), Linux/X11, the setting browser.tabs.hoverPreview.enabled does change back to "true" every few days, or perhaps browser rest… (閱讀更多)

On Firefox 128.14.0esr (build 20250811113756), Linux/X11, the setting browser.tabs.hoverPreview.enabled does change back to "true" every few days, or perhaps browser restarts.

How can I turn off tab previews reliably?

已解決 封存 2 201

in about:keyboards i dont see the option to change the 'go to left/right tab' hotkey, which the default is Ctrl+Pg Up/Dn in my lenovo thinkpad keyboard

i want to be able to change the hotkey corresponding to go to left/right tab which the default is Ctrl+Pg Up/Dn in my lenovo thinkpad keyboard. and in about:keyboard that… (閱讀更多)

i want to be able to change the hotkey corresponding to go to left/right tab which the default is Ctrl+Pg Up/Dn in my lenovo thinkpad keyboard. and in about:keyboard that option is not available, in fact the hotkey isnt even mentioned

Open 2

Why is the block pop-up windows button grayed out?

One of the websites I need for school requires pop-ups. I can't click on the button to permit pop-up windows for just that site because it only flashes for less than a se… (閱讀更多)

One of the websites I need for school requires pop-ups. I can't click on the button to permit pop-up windows for just that site because it only flashes for less than a second and it is grayed out. I tried to go to preferences to disable the pop-up blocker, but the checkbox to disable it is grayed out. I created a new profile, but the button to disable the pop-up blocker is grayed out on that too. I now have to use chrome for this website because I can allow pop-ups on that browser.

My question is why is this setting grayed out? And how can I re-enable pop-ups or at least edit the exception list because that is grayed out right now too. Any other tips for troubleshooting similar issues in the future would also be appreciated.

OS/Firefox packer: Artix Linux Firefox ver.: 142.0 (64-bit) Tested on brand new profile

已解決 封存 2 154

Disable search in address bar and add search bar

I was dismayed to discover that the latest versions of Firefox (e.g. 141 on Linux) unify the search and address bars again. There does not seem to be any easy and obvious… (閱讀更多)

I was dismayed to discover that the latest versions of Firefox (e.g. 141 on Linux) unify the search and address bars again. There does not seem to be any easy and obvious way to change this.

On my 128 esr Linux Firefox I have an address bar that does not accept search terms and a separate search bar.

How can I get this behaviour in 141?

封存 2 91

How can I pass the full url to the AI prompt?

I've found out that you can create custom prompts for the AI sidebar with the configuration `browser.ml.chat.prompts.*`. Usually, this is done with the selection text. Ho… (閱讀更多)

I've found out that you can create custom prompts for the AI sidebar with the configuration `browser.ml.chat.prompts.*`. Usually, this is done with the selection text. However, I'd like to pass the URL instead. I could use `%url%`, but that does not include parameters after `?` and hence does not work for Youtube.

Is there any variable that I can use to pass the full URL including parameters of the URL?

已解決 封存 2 379

Choosing a "Different" AI chatbot other than Anthropic, ChatGPT, Copilot, Google Gemini or Le Chat Mistral :)

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… (閱讀更多)

      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. 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. 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. 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!

Open 1 313

can't disable AI link previews

I have the AI link previews disabled in my Firefox settings, and they still pop up sometimes. When they do start popping up, they make the browser almost unusable. Please… (閱讀更多)

I have the AI link previews disabled in my Firefox settings, and they still pop up sometimes. When they do start popping up, they make the browser almost unusable. Please Firefox just get rid of this garbage or at least make it turn off when it's supposed to be off.

封存 1 184

Suggest a feature - unhook

Hi Mozilla, i stumbled upon an extension called 'unhook' which allows to hide a wide selection of content from my view on youtube. This is amazing! Now I can watch my fav… (閱讀更多)

Hi Mozilla,

i stumbled upon an extension called 'unhook' which allows to hide a wide selection of content from my view on youtube. This is amazing! Now I can watch my favourite channels without annoying stuff on every side. I would really appreciate to have something of this kind as a native feature in Firefox. So please consider this a suggestion right away or point me towards the place where I can suggest this feature correctly - if there is such.

Thanks a lot for Firefox!

Open 1 55