diff --git a/README.md b/README.md
index 08696f3..7aaa8d6 100644
--- a/README.md
+++ b/README.md
@@ -31,11 +31,13 @@ Supported services/protocols:
 
 ## Build
 
-You need Node.js/npm to use the command line tool web-ext
+You need Node.js/npm
+
+`npm install` then
 
 `npm install --global web-ext`
 
-then, use the next command to generate the package (.zip file)
+Use the next command to generate the package (.zip file)
 
 `web-ext build`
 
diff --git a/src/img/screenshot-1.png b/src/img/screenshot-1.png
index ba3a875..ca43a8e 100644
Binary files a/src/img/screenshot-1.png and b/src/img/screenshot-1.png differ
diff --git a/src/img/screenshot-2.png b/src/img/screenshot-2.png
index 5803313..6b0b1a4 100644
Binary files a/src/img/screenshot-2.png and b/src/img/screenshot-2.png differ
diff --git a/src/img/screenshot-3.png b/src/img/screenshot-3.png
index ca43a8e..b5ad2bd 100644
Binary files a/src/img/screenshot-3.png and b/src/img/screenshot-3.png differ
diff --git a/src/js/background.js b/src/js/background.js
index 94c6830..7b4b3f9 100644
--- a/src/js/background.js
+++ b/src/js/background.js
@@ -8,9 +8,6 @@ const host = {
   pleromaDefault: `https://blob.cat`,
   socialhomeDefault: `https://socialhome.network`,
   xmppDefault: `https://suchat.org`,
-
-  // shortcut command
-  shortcutDefault: `Ctrl+Shift+U`,
 }
 
 
diff --git a/web-ext-config.js b/web-ext-config.js
new file mode 100644
index 0000000..a76546d
--- /dev/null
+++ b/web-ext-config.js
@@ -0,0 +1,7 @@
+module.exports = {
+    ignoreFiles: [
+        "src/img/screenshot-*.png",
+        "src/img/ice-cream.png",
+        "src/img/badge-amo.png"
+    ],
+};