diff --git a/manifest.json b/manifest.json
new file mode 100644
index 0000000..faa845b
--- /dev/null
+++ b/manifest.json
@@ -0,0 +1,20 @@
+{
+"name": "PWA sample",
+"short_name": "PWA",
+"icons": [{
+"src": "./icon81x81.png",
+"sizes": "81x81",
+"type": "image/png"
+},
+・・・
+{
+"src": "./icon512x512.png",
+"sizes": "512x512",
+"type": "image/png"
+}
+],
+"theme_color": "#c0c0c0",
+"background_color": "#dcdcdc",
+"display": "standalone",
+"start_url": "./index.html"
+}