Improve AdSense loading speed and performance

Implement lazy loading for AdSense ads using IntersectionObserver to defer loading until the ad is visible on the screen, and optimize ad initialization logic.

Replit-Commit-Author: Agent
Replit-Commit-Session-Id: 45a1dcfc-f8a2-475a-a6b9-96fbb841dc27
Replit-Commit-Checkpoint-Type: full_checkpoint
Replit-Commit-Screenshot-Url: https://storage.googleapis.com/screenshot-production-us-central1/60d372ff-2c10-46c7-b01b-10c3435136b0/45a1dcfc-f8a2-475a-a6b9-96fbb841dc27/JMKe3od

.replit

@@ -23,6 +23,10 @@ externalPort = 3001
 localPort = 35637
 externalPort = 3000
 
+[[ports]]
+localPort = 36095
+externalPort = 3002
+
 [env]
 PORT = "5000"
 

client/src/components/adsense-ad.tsx

@@ -1,4 +1,4 @@
-import { useEffect, useRef, useState } from 'react';
+import { useEffect, useRef } from 'react';
 
 interface AdSenseAdProps {
   adSlot: string;
@@ -6,6 +6,7 @@ interface AdSenseAdProps {
   width?: number;
   height?: number;
   className?: string;
+  lazy?: boolean;
 }
 
 export default function AdSenseAd({ 
@@ -13,62 +14,56 @@ export default function AdSenseAd({
   adFormat = 'auto',
   width,
   height,
-  className = '' 
+  className = '',
+  lazy = false
 }: AdSenseAdProps) {
   const adRef = useRef<HTMLDivElement>(null);
-  const [isInitialized, setIsInitialized] = useState(false);
 
   useEffect(() => {
-    if (isInitialized) return;
-
     const initializeAd = () => {
       const insElement = adRef.current?.querySelector('ins');
-      if (!insElement) return;
+      if (!insElement || insElement.dataset.adsbygoogleStatus === 'done') return;
 
-      // Check if element has width > 0
-      const clientWidth = insElement.clientWidth;
-      if (clientWidth > 0) {
-        try {
-          // @ts-ignore
-          (window.adsbygoogle = window.adsbygoogle || []).push({});
-          setIsInitialized(true);
-        } catch (error) {
-          console.error('AdSense initialization error:', error);
-        }
+      try {
+        // @ts-ignore
+        (window.adsbygoogle = window.adsbygoogle || []).push({});
+      } catch (error) {
+        console.error('AdSense initialization error:', error);
       }
     };
 
-    // Try immediate initialization after short delay
-    const timer = setTimeout(initializeAd, 100);
-
-    // Use ResizeObserver as fallback
-    if (typeof window !== 'undefined' && window.ResizeObserver) {
-      const observer = new ResizeObserver(() => {
-        if (!isInitialized) {
-          initializeAd();
-        }
-      });
+    if (lazy) {
+      // Lazy load with IntersectionObserver
+      const observer = new IntersectionObserver(
+        (entries) => {
+          entries.forEach((entry) => {
+            if (entry.isIntersecting) {
+              initializeAd();
+              observer.disconnect();
+            }
+          });
+        },
+        { threshold: 0.1 }
+      );
 
       if (adRef.current) {
         observer.observe(adRef.current);
       }
 
-      return () => {
-        clearTimeout(timer);
-        observer.disconnect();
-      };
+      return () => observer.disconnect();
+    } else {
+      // Immediate initialization
+      initializeAd();
     }
+  }, [adSlot, lazy]);
 
-    return () => clearTimeout(timer);
-  }, [adSlot, isInitialized]);
-
+  // Fixed size configuration
+  const isFixedSize = width && height;
   const adStyle: React.CSSProperties = {
-    display: 'block',
-    maxWidth: '728px',
-    maxHeight: '90px'
+    display: 'inline-block'
   };
 
-  if (adFormat !== 'auto' && width && height) {
+  if (isFixedSize) {
     adStyle.width = `${width}px`;
     adStyle.height = `${height}px`;
   } else {
@@ -87,8 +82,10 @@ export default function AdSenseAd({
         style={adStyle}
         data-ad-client="ca-pub-4465464714854276"
         data-ad-slot={adSlot}
-        data-ad-format={adFormat}
-        data-full-width-responsive="true"
+        {...(isFixedSize ? {} : { 
+          'data-ad-format': adFormat,
+          'data-full-width-responsive': 'true'
+        })}
       />
     </div>
   );

client/src/pages/home.tsx

@@ -237,6 +237,7 @@ export default function Home() {
             width={728}
             height={90}
             className="max-w-full"
+            lazy={true}
           />
         </div>
       </div>