diff --git a/src/review.rs b/src/review.rs
index ac3f6f2..c73f3f3 100644
--- a/src/review.rs
+++ b/src/review.rs
@@ -190,9 +190,14 @@ h1 { text-align: center; margin-bottom: 20px; color: #e94560; }
 .status { text-align: center; margin-top: 16px; font-size: 1.1em; color: #e94560; }
 .deleted { opacity: 0.3; pointer-events: none; }
 .ignored { opacity: 0.2; pointer-events: none; }
+.lightbox { display: none; position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.92); z-index: 1000; justify-content: center; align-items: center; cursor: zoom-out; }
+.lightbox.active { display: flex; }
+.lightbox img { max-width: 95vw; max-height: 95vh; object-fit: contain; border-radius: 8px; }
+.lightbox .lb-path { position: absolute; bottom: 16px; left: 50%; transform: translateX(-50%); color: #aaa; font-size: 0.85em; background: rgba(0,0,0,0.7); padding: 6px 16px; border-radius: 8px; max-width: 90vw; text-align: center; word-break: break-all; }
 </style>
 </head>
 <body>
+<div class="lightbox" id="lightbox" onclick="closeLightbox()"><img id="lb-img" src=""><div class="lb-path" id="lb-path"></div></div>
 <h1>🔍 deduper — Review Duplicates</h1>
 "#);
 
@@ -235,7 +240,7 @@ h1 { text-align: center; margin-bottom: 20px; color: #e94560; }
 
             html.push_str(&format!(
                 r#"<div class="image-card" id="card-{idx}-{pidx}">
-<img src="{data_uri}" alt="{display_path}" title="Click to view full path">
+<img src="{data_uri}" alt="{display_path}" title="Click for full size" onclick="openLightbox(this.src, '{display_path}')">
 <div class="path">{display_path}</div>
 <div class="size">{size}</div>
 <label><input type="checkbox" class="del-check" data-group="{idx}" value="{display_path}"> Delete this</label>
@@ -314,6 +319,16 @@ async function shutdown() {
     try { await fetch('/shutdown', {method: 'POST'}); } catch(e) {}
     document.getElementById('status').textContent = 'Review complete. You can close this tab.';
 }
+
+function openLightbox(src, path) {
+    document.getElementById('lb-img').src = src;
+    document.getElementById('lb-path').textContent = path;
+    document.getElementById('lightbox').classList.add('active');
+}
+function closeLightbox() {
+    document.getElementById('lightbox').classList.remove('active');
+}
+document.addEventListener('keydown', e => { if (e.key === 'Escape') closeLightbox(); });
 </script>
 </body>
 </html>
