diff --git a/.github/workflows/e2e.yml b/.github/workflows/e2e.yml
index eef7adb..a53da2c 100644
--- a/.github/workflows/e2e.yml
+++ b/.github/workflows/e2e.yml
@@ -1,7 +1,10 @@
 name: E2E
 
 on:
-  [ workflow_dispatch ]
+  push:
+    branches:
+      - v1.x
+  workflow_dispatch:
 
 jobs:
   screenshot-ubuntu:
diff --git a/.github/workflows/screenshot.yml b/.github/workflows/screenshot.yml
index 5805e90..18f0770 100644
--- a/.github/workflows/screenshot.yml
+++ b/.github/workflows/screenshot.yml
@@ -1,7 +1,7 @@
 name: Tests
 
 on:
-  [ push, workflow_dispatch ]
+  [ push, pull_request, workflow_dispatch ]
 
 jobs:
   screenshot-ubuntu:
@@ -69,3 +69,20 @@ jobs:
         destination: github-com-swinton-screenshot-website-${{ matrix.os }}-${{ matrix.width }}.png
         full-page: true
         width: ${{ matrix.width }}
+
+  screenshot-no-width:
+    name: Screenshot (no width)
+    runs-on: ubuntu-latest
+
+    steps:
+
+    - name: Checkout
+      uses: actions/checkout@v2
+
+    - name: Capture Screenshot
+      id: screenshot
+      uses: ./
+      with:
+        source: https://github.com/swinton/screenshot-website
+        destination: github-com-swinton-screenshot-website-ubuntu-latest-default.png
+        full-page: true
diff --git a/action.yml b/action.yml
index 170ea40..7a1d4e8 100644
--- a/action.yml
+++ b/action.yml
@@ -19,6 +19,7 @@ inputs:
   width:
     description: 'Page width'
     required: false
+    default: '1280'
 outputs:
   path:
     description: 'The filesystem path to the website screenshot'