diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..1521c8b
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1 @@
+dist
diff --git a/Makefile b/Makefile
new file mode 100644
index 0000000..0d848f0
--- /dev/null
+++ b/Makefile
@@ -0,0 +1,7 @@
+.PHONY: build
+build: dist/web-ext.zip
+
+dist/web-ext.zip:
+	mkdir -p "$(dir $@)"
+	cd src \
+	; zip -r "$(abspath $@)" .
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..3f2f0ae
--- /dev/null
+++ b/README.md
@@ -0,0 +1,7 @@
+# Piped Redirection
+
+YouTube から piped.video にリダイレクトする拡張機能
+
+## License
+
+MIT
diff --git a/src/content.js b/src/content.js
new file mode 100644
index 0000000..6f1c35d
--- /dev/null
+++ b/src/content.js
@@ -0,0 +1,3 @@
+"use strict";
+
+location.hostname = "piped.video";
diff --git a/src/manifest.json b/src/manifest.json
new file mode 100644
index 0000000..ec66e13
--- /dev/null
+++ b/src/manifest.json
@@ -0,0 +1,11 @@
+{
+  "manifest_version": 3,
+  "name": "Piped Redirection",
+  "version": "0.0.0",
+  "content_scripts": [
+    {
+      "matches": ["https://www.youtube.com/*"],
+      "js": ["content.js"]
+    }
+  ]
+}