diff --git a/apps/monitor/src/runner.rs b/apps/monitor/src/runner.rs
index f22aba4..db4dbfb 100644
--- a/apps/monitor/src/runner.rs
+++ b/apps/monitor/src/runner.rs
@@ -246,7 +246,7 @@ async fn run_check(client: &reqwest::Client, monitor: &Monitor, scheduled_at: Op
 
             let meta = json!({
                 "headers": headers,
-                "body_preview": &body[..body.len().min(500)],
+                "body_preview": &body[..body.len().min(25_000)],
             });
 
             debug!("{} → {status} {latency_ms}ms up={up}", monitor.url);
diff --git a/apps/web/src/views/detail.ejs b/apps/web/src/views/detail.ejs
index 4fceb3f..ea3ad39 100644
--- a/apps/web/src/views/detail.ejs
+++ b/apps/web/src/views/detail.ejs
@@ -226,7 +226,7 @@
       // Body preview
       if (bodyPreview) {
         html += '<div>';
-        html += '<div class="text-xs text-gray-500 mb-1">Response Body <span class="text-gray-600">(first 500 chars)</span></div>';
+        html += '<div class="text-xs text-gray-500 mb-1">Response Body <span class="text-gray-600">(up to 25KB)</span></div>';
         html += `<pre class="bg-gray-800/50 border border-border-subtle rounded-lg px-3 py-2 text-xs font-mono text-gray-300 whitespace-pre-wrap break-all max-h-80 overflow-y-auto">${escapeHtml(bodyPreview)}</pre>`;
         html += '</div>';
       }