diff --git a/README.md b/README.md
index 62cb70e..414dc32 100644
--- a/README.md
+++ b/README.md
@@ -1,2 +1,11 @@
 # down
-📉 Check if website is down using `ping` command
+
+Check if website is down using `ping` command.
+
+## Example
+
+```ts
+import { down } from 'https://deno.land/x/down/mod.ts'
+
+await down('example.com') // false
+```
diff --git a/mod.ts b/mod.ts
new file mode 100644
index 0000000..956dec9
--- /dev/null
+++ b/mod.ts
@@ -0,0 +1,16 @@
+/**
+ * Check if website is down
+ * @param host website host, e.g. example.com
+ * @param timeout custom timeout in seconds
+ * @returns whether website is down or not
+ */
+export const down = async (host: string, timeout = 1): Promise<boolean> => {
+  const cmd = Deno.run({
+    cmd: ['ping', `-W ${timeout}`, '-c 1', host],
+    stdout: 'null'
+  })
+
+  const { code } = await cmd.status()
+
+  return code !== 0
+}