diff --git a/README.md b/README.md
index e714562..3174903 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 # Solveit Reader
 
-A Chrome extension that imports any webpage into Solveit for reading and annotation.
+A Chrome and Firefox extension that imports any webpage into Solveit for reading and annotation.
 
 ## Features
 
@@ -12,11 +12,22 @@ A Chrome extension that imports any webpage into Solveit for reading and annotat
 
 ## Installation
 
+### Chrome
+
 1. Go to `chrome://extensions/`
 2. Enable "Developer mode" (toggle in top right)
 3. Click "Load unpacked"
 4. Select the `solveit-reader` folder
 
+### Firefox
+
+1. Go to `about:debugging` in Firefox
+2. Click "This Firefox" in the left sidebar
+3. Click "Load Temporary Add-on..."
+4. Select the `manifest.json` file from the `solveit-reader` folder
+
+**Note**: In Firefox, the extension is temporary and will be removed when you restart the browser. You'll need to reload it each session, or use Firefox Developer Edition/Nightly for persistent unsigned extensions.
+
 ## Usage
 
 1. Navigate to any webpage
@@ -42,6 +53,7 @@ The extension will:
 
 ## Files
 
+Settings are saved persistently using the browser's sync storage, so your instance URL and folder preferences carry across browser sessions.
 ```
 solveit-reader/
 ├── manifest.json           # Extension config
@@ -56,7 +68,7 @@ solveit-reader/
 
 ## Requirements
 
-- Chrome browser
+- Chrome or Firefox browser
 - A running Solveit instance
 
 ## Changelog
diff --git a/manifest.json b/manifest.json
index 7a3b906..b1583f8 100644
--- a/manifest.json
+++ b/manifest.json
@@ -8,6 +8,11 @@
   "action": {
     "default_popup": "popup.html"
   },
+  "browser_specific_settings": {
+    "gecko": {
+      "id": "solveit-reader@answer.ai"
+    }
+  },
   "web_accessible_resources": [{
     "resources": ["turndown.js", "turndown-plugin-gfm.js"],
     "matches": ["<all_urls>"]