I’ve developed a [https://addons.mozilla.org/en-US/firefox/addon/rankingsfactor-ai-powered/ Firefox extension] similar to the RankingsFactor [https://rankingsfactor.com/extension 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.