diff --git a/EnvelopeGenerator.ReceiverUI/wwwroot/js/pdf-viewer.js b/EnvelopeGenerator.ReceiverUI/wwwroot/js/pdf-viewer.js
index 871c801f..ac0c0b72 100644
--- a/EnvelopeGenerator.ReceiverUI/wwwroot/js/pdf-viewer.js
+++ b/EnvelopeGenerator.ReceiverUI/wwwroot/js/pdf-viewer.js
@@ -115,6 +115,22 @@ window.pdfViewer = {
         this.pageRendering = true;
 
         try {
+            // Get scroll container
+            const container = this.canvas.closest('.pdf-frame');
+            
+            // Store scroll position and viewport center BEFORE rendering
+            let scrollLeft = 0, scrollTop = 0;
+            let centerX = 0, centerY = 0;
+            let oldWidth = this.canvas.width;
+            let oldHeight = this.canvas.height;
+            
+            if (container) {
+                scrollLeft = container.scrollLeft;
+                scrollTop = container.scrollTop;
+                centerX = scrollLeft + container.clientWidth / 2;
+                centerY = scrollTop + container.clientHeight / 2;
+            }
+
             const page = await this.pdfDoc.getPage(num);
             const viewport = page.getViewport({ scale: this.scale });
 
@@ -138,6 +154,18 @@ window.pdfViewer = {
 
             console.log('Page rendered successfully');
 
+            // Restore viewport center position AFTER rendering
+            if (container && oldWidth > 0 && oldHeight > 0) {
+                const scaleX = this.canvas.width / oldWidth;
+                const scaleY = this.canvas.height / oldHeight;
+                
+                const newCenterX = centerX * scaleX;
+                const newCenterY = centerY * scaleY;
+                
+                container.scrollLeft = newCenterX - container.clientWidth / 2;
+                container.scrollTop = newCenterY - container.clientHeight / 2;
+            }
+
             this.currentRenderTask = null;
             this.pageRendering = false;