diff --git a/Makefile.toml b/Makefile.toml
new file mode 100644
index 0000000..da40cac
--- /dev/null
+++ b/Makefile.toml
@@ -0,0 +1,41 @@
+[env]
+# Set BROWSER="firefox" if not already defined.
+BROWSER = { condition = { env_not_set = ["BROWSER"] }, value = "firefox" }
+
+# Start a browser instance that will reload the extension when changes are made.
+[tasks.dev]
+clear = true
+env = { NODE_ENV = "development" }
+dependencies = ["build"]
+command = "pnpm"
+args = ["conc", "-c=auto", "-k", "makers watch", "makers run"]
+
+# Build the WebExtension.
+[tasks.build]
+clear = true
+command = "pnpm"
+args = ["tsx", "build.ts"]
+
+# Remove build directories.
+[tasks.clean]
+clear = true
+command = "pnpm"
+args = ["trash", "build/${BROWSER}"]
+
+# Re-build and pack the WebExtension for publishing.
+[tasks.pack]
+clear = true
+dependencies = ["clean", "build"]
+command = "pnpm"
+args = ["web-ext", "build", "--config=build/web-ext-${BROWSER}.json"]
+
+# Start a browser instance with the extension loaded.
+[tasks.run]
+clear = true
+command = "pnpm"
+args = ["web-ext", "run", "--config=build/web-ext-${BROWSER}.json"]
+
+# Alias for `WATCH=true makers build`.
+[tasks.watch]
+env = { WATCH="true" }
+extend = "build"