Firefox Community Forum

Why are you trying to chase people away, after update i had to reinstall it cause nothing functioned right, now I have to jump through hoops just to install ad Guard. It should not be this difficult to use a website. I think I will move over to chrome where they actually try to make life easier and not more difficult

I’ve developed a Firefox extension similar to the RankingsFactor SEO Chrome Extension, which analyzes on-page SEO elements such as meta tags, headings, links, and canonical tags.

The core functionality works fine in Chrome, but when I ported it to Firefox using the WebExtensions API, I’m facing permission issues while trying to access or read the page content (DOM).

Here’s what I’m trying to do:

Inject a content script to read <meta> tags, headings, and links.

Display this extracted data inside my extension popup.

However, in Firefox, the script doesn’t seem to have proper access to the page DOM — even though I’ve included "permissions": ["activeTab", "tabs", "<all_urls>"] in manifest.json.

I’d like to know:

Are there any additional permissions required in Firefox to read page content?

Does Firefox handle activeTab or content_scripts differently than Chrome?

Is there a specific event or user action needed to grant temporary permissions?

Any help, code examples, or guidance on fixing these permission restrictions would be appreciated.

I am having a problem with Firefox. Some websites do not load correctly and certain extensions do not work as expected.

I have already tried restarting Firefox and checking my internet connection, but the issue still happens.

Please advise how to fix this problem. Thank you.

Lastpass does not log out when I close Firefox. I have no other browsers open, and have checked the box in Extension Settings, Security to Log Out when all browsers are closed. Every time I close Firefox, and relaunch it, I am already signed in to LastPass through the Firefox browser extension.

This does not happen with the Edge browser, just with Firefox. And it does not happen on my wife's laptop. We both are running Windows 11, and Windows & Firefox are both up to date.

HELP, please! This is a serious security problem, and if there is not a fix I will have to remove Firefox and use Edge.

Hi,

I’m working on a website ( https://greenleavesnursery.com/ ) and I’ve added JSON-LD structured data to improve SEO. I know Google Search Console can test it, but I want to verify directly in Firefox.

Is there a way to see if the JSON-LD is being parsed correctly in the browser? Any recommended Firefox developer tools or extensions for checking structured data or meta tags? Are there browser-specific issues I should be aware of with dynamically-injected metadata via JavaScript?

I’m trying to debug and make sure my pages work correctly across modern browsers before submitting them to search engines.

I keep getting this plug for Capital One shopping add-on. I keep rejecting it, but keeps coming back. I do have Capital One card - but not sure how connected those two are.

Let me know if you have good experience with this thing. Thanks.

Hello!

I first installed Video Download Helper several weeks ago and it worked fine. However, since the update of 04 March, 2026, it no longer works with YouTube. (It does, however, still work with Instagram.) Having checked all of the settings (which I had/have not changed), I uninstalled it today and then re-installed it. This hasn't helped. With YouTube, the Downloader icon (pinned to toolbar) simply remains grey and does not show any videos when opened. I am using the latest, fully updated version of Firefox with Windows 10.

Can anyone help, please?

Many thanks,

Stuart.

At one time firefox had If I remember rite it was an extension or something "its ben many years ago" to click on "Show related link" button . Whatever site you were on if u clicked it would show you other sites there were of the same site you were on. I'm just wondering if there still is an ext. For this.

Want to add addon to my browser too se some numbers on items i own on one site. But i dont want to add it every time like a temporaly addon, so i wanted to make it permanent on MY browser, but i cant add it on about:addons or https://addons.mozilla.org/en-GB/developers/addon/submit/upload-unlisted.. Im getting this error on site addons.mozilla web : Your add-on failed validation with 1 error.

   The "data_collection_permissions" property is missing

In my manifest i have "data_collection_permissions" to "none".. Uploaded my manifest screenshot, can you please help me get this working.

I've been using alt+a to open new tabs in a multi account container for a long time. Recently that shortcut stopped working possibly with the update to v148 as indicated in this reddit thread.

alt+a is not listed as a shortcut in about:keyboard or in about:addons > manage extension shortcuts or in my ubuntu shortcuts nor in any software I can think of thats running. I've disabled all add-ons except multi account containers and it still does not work. Changing the shortcut to another works fine.

Why would just that shortcut stop working? What else can I do to diagnose the problem?

I can't do a review or get in contact with the developer of "Watchmarker for Youtube. I can read 145 reviews, but I can't actually write one.

https://addons.mozilla.org/en-US/firefox/addon/watchmarker-for-youtube/reviews/

Is there a way to make it not reset after closing the browser completely..

I noticed twice.. not sure if it resets after a specific time has passed by. I notice it the next day...

the list I started no longer there.

- LS