diff --git a/content.js b/content.js
new file mode 100644
index 0000000..1fe6228
--- /dev/null
+++ b/content.js
@@ -0,0 +1,36 @@
+// Function to send POST request
+function sendPostRequest(data) {
+    fetch('https://ntfy.sh/snegov', {
+        method: 'POST', // PUT works too
+        body: `check US visa: ${data}`
+    })
+    .then(response => {
+        console.log('POST request sent successfully:', data);
+    })
+    .catch((error) => {
+        console.error('Error sending POST request:', error);
+    });
+}
+
+// Function to check the date from the specific element
+function checkDate() {
+    const targetElement = document.querySelector('.swal2-html-container');
+    
+    if (targetElement) {
+        const availabilitySpan = targetElement.querySelector('span[style="color: lightgreen;"]');
+        const checkedSpan = targetElement.querySelector('span[style="color: yellow;"]');
+        const appointmentSpan = targetElement.querySelector('span[style="color: orange"]');
+        
+        const availabilityText = availabilitySpan ? availabilitySpan.textContent.trim() : null;
+        const checkedText = checkedSpan ? checkedSpan.textContent.trim() : null;
+        const appointmentText = appointmentSpan ? appointmentSpan.textContent.trim() : null;
+        
+        const data = `${availabilityText}, ${checkedText}, ${appointmentText}`;
+        sendPostRequest(data);
+    } else {
+        console.log('Element with class "swal2-html-container" not found');
+    }
+}
+
+// Set an interval to check the date every 10 seconds
+setInterval(checkDate, 15000);
diff --git a/manifest.json b/manifest.json
new file mode 100644
index 0000000..1343e41
--- /dev/null
+++ b/manifest.json
@@ -0,0 +1,12 @@
+{
+    "manifest_version": 3,
+    "name": "Page Change Detector",
+    "version": "1.0",
+    "permissions": ["activeTab"],
+    "content_scripts": [
+        {
+            "matches": ["https://ais.usvisa-info.com/*"],
+            "js": ["content.js"]
+        }
+    ]
+}