diff --git a/src/manifests/chrome.json b/src/manifests/chrome.json
deleted file mode 100644
index b88bace..0000000
--- a/src/manifests/chrome.json
+++ /dev/null
@@ -1,34 +0,0 @@
-{
-  "name": "Sample WebExtension",
-  "author": "abhijithvijayan",
-  "short_name": "Sample Name",
-  "description": "Sample description",
-  "homepage_url": "https://github.com/abhijithvijayan/web-extension-starter",
-  "manifest_version": 2,
-  "minimum_chrome_version": "49",
-  "permissions": ["tabs", "storage", "http://*/*", "https://*/*"],
-  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
-  "icons": {
-    "16": "assets/icons/favicon-16.png",
-    "32": "assets/icons/favicon-32.png",
-    "48": "assets/icons/favicon-48.png",
-    "128": "assets/icons/favicon-128.png"
-  },
-  "browser_action": {
-    "default_popup": "popup.html",
-    "default_icon": {
-      "16": "assets/icons/favicon-16.png",
-      "32": "assets/icons/favicon-32.png",
-      "48": "assets/icons/favicon-48.png",
-      "128": "assets/icons/favicon-128.png"
-    },
-    "default_title": "tiny title",
-    "chrome_style": false
-  },
-  "options_page": "options.html",
-  "options_ui": {
-    "page": "options.html",
-    "chrome_style": false,
-    "open_in_tab": true
-  }
-}
diff --git a/src/manifests/firefox.json b/src/manifests/firefox.json
deleted file mode 100644
index 8f91f7b..0000000
--- a/src/manifests/firefox.json
+++ /dev/null
@@ -1,31 +0,0 @@
-{
-  "name": "Sample WebExtension",
-  "author": "abhijithvijayan",
-  "short_name": "Sample Name",
-  "description": "Sample description",
-  "homepage_url": "https://github.com/abhijithvijayan/kutt-extension",
-  "manifest_version": 2,
-  "permissions": ["tabs", "storage", "http://*/*", "https://*/*"],
-  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
-  "icons": {
-    "16": "assets/icons/favicon-16.png",
-    "32": "assets/icons/favicon-32.png",
-    "48": "assets/icons/favicon-48.png",
-    "128": "assets/icons/favicon-128.png"
-  },
-  "browser_action": {
-    "default_popup": "popup.html",
-    "default_icon": {
-      "16": "assets/icons/favicon-16.png",
-      "32": "assets/icons/favicon-32.png",
-      "48": "assets/icons/favicon-48.png",
-      "128": "assets/icons/favicon-128.png"
-    },
-    "default_title": "tiny title",
-    "browser_style": false
-  },
-  "options_ui": {
-    "page": "options.html",
-    "open_in_tab": true
-  }
-}
diff --git a/src/manifests/opera.json b/src/manifests/opera.json
deleted file mode 100644
index f1f9ffd..0000000
--- a/src/manifests/opera.json
+++ /dev/null
@@ -1,35 +0,0 @@
-{
-  "name": "Sample WebExtension",
-  "developer": {
-    "name": "abhijithvijayan"
-  },
-  "short_name": "Sample Name",
-  "description": "Sample description",
-  "homepage_url": "https://github.com/abhijithvijayan/web-extension-starter",
-  "manifest_version": 2,
-  "minimum_opera_version": "36",
-  "permissions": ["tabs", "storage", "http://*/*", "https://*/*"],
-  "content_security_policy": "script-src 'self' 'unsafe-eval'; object-src 'self'",
-  "icons": {
-    "16": "assets/icons/favicon-16.png",
-    "32": "assets/icons/favicon-32.png",
-    "48": "assets/icons/favicon-48.png",
-    "128": "assets/icons/favicon-128.png"
-  },
-  "browser_action": {
-    "default_popup": "popup.html",
-    "default_icon": {
-      "16": "assets/icons/favicon-16.png",
-      "32": "assets/icons/favicon-32.png",
-      "48": "assets/icons/favicon-48.png",
-      "128": "assets/icons/favicon-128.png"
-    },
-    "default_title": "tiny title",
-    "chrome_style": false
-  },
-  "options_page": "options.html",
-  "options_ui": {
-    "page": "options.html",
-    "open_in_tab": true
-  }
-}