diff --git a/public/index.html b/public/index.html
index 0692106..ff0fa3e 100644
--- a/public/index.html
+++ b/public/index.html
@@ -1256,12 +1256,9 @@
         session.outputRenderedLength = 0;
         renderSessions();
 
-        // If expanding, resize the PTY to fit the viewport
         if (session.expanded) {
-          // Wait for DOM to update before measuring
+          // Wait for DOM to update before initializing UI state
           setTimeout(() => {
-            handleSessionResize(Number(sessionId));
-            // After mount, ensure we start at bottom and initialize UI state
             scrollToBottom(Number(sessionId));
             updateScrollButton(Number(sessionId));
             initSessionOutputUI(Number(sessionId));
@@ -2134,74 +2131,6 @@
       }).join('');
     }
 
-    // Viewport-based PTY resize
-    let resizeDebounceTimer = null;
-
-    function measureTerminalCols() {
-      // Create a hidden span with monospace font to measure character width
-      const $measure = document.createElement('span');
-      $measure.style.fontFamily = '"SF Mono", Monaco, "Cascadia Code", "Courier New", monospace';
-      $measure.style.fontSize = `${state.settings.fontSize}px`;
-      $measure.style.lineHeight = '1.5';
-      $measure.style.visibility = 'hidden';
-      $measure.style.position = 'absolute';
-      $measure.textContent = 'X'.repeat(100); // Measure 100 chars
-      document.body.appendChild($measure);
-
-      const charWidth = $measure.offsetWidth / 100;
-      document.body.removeChild($measure);
-
-      // Get terminal container width (accounting for padding)
-      const $container = document.querySelector('.session-output');
-      if (!$container) {
-        return 80; // Default fallback
-      }
-
-      const containerWidth = $container.clientWidth - 32; // 16px padding on each side
-      const cols = Math.floor(containerWidth / charWidth);
-
-      // Clamp to reasonable bounds
-      return Math.max(40, Math.min(cols, 300));
-    }
-
-    async function resizeSessionPTY(sessionId, cols, rows) {
-      try {
-        const res = await fetch(`/api/sessions/${sessionId}/resize`, {
-          method: 'POST',
-          headers: {
-            'Content-Type': 'application/json',
-          },
-          body: JSON.stringify({ cols, rows }),
-        });
-        if (!res.ok) {
-          console.error('Failed to resize session PTY:', await res.text());
-        }
-      } catch (error) {
-        console.error('Error resizing session PTY:', error);
-      }
-    }
-
-    function handleSessionResize(sessionId) {
-      const cols = measureTerminalCols();
-      const rows = 24; // Reasonable default row count
-      resizeSessionPTY(sessionId, cols, rows);
-    }
-
-    function handleWindowResize() {
-      if (resizeDebounceTimer) {
-        clearTimeout(resizeDebounceTimer);
-      }
-
-      resizeDebounceTimer = setTimeout(() => {
-        // Resize all expanded sessions
-        state.sessions.forEach((session) => {
-          if (session.expanded) {
-            handleSessionResize(session.id);
-          }
-        });
-      }, 300); // Debounce for 300ms
-    }
-
     window.scrollToBottom = (sessionId) => {
       const $outputContainer = document.getElementById(`session-output-${sessionId}`);
       if ($outputContainer) {
@@ -2213,9 +2142,6 @@
     loadSettings();
     applySettings();
     connectSSE();
-
-    // Set up window resize listener for PTY viewport resize
-    window.addEventListener('resize', handleWindowResize);
   </script>
 </body>
 </html>