diff --git a/site/content/leaderboard/_index.md b/site/content/leaderboard/_index.md
index 98eca004..d35bdf60 100644
--- a/site/content/leaderboard/_index.md
+++ b/site/content/leaderboard/_index.md
@@ -122,6 +122,81 @@ html.dark .http-ver[data-ver="ws"].active { color: #22d3ee; background: rgba(8,1
 </script>
 </div>
 
+<div id="timeline-link-bar" style="display:flex; margin-top:0.5rem; padding:0.45rem 0.9rem; justify-content:flex-end; align-items:center; gap:0.5rem; font-size:0.8rem; color:#64748b;">
+  <span id="timeline-link-prefix">📈 Browse historical benchmark results on</span>
+  <a id="timeline-link"
+     href="https://kaliumhexacyanoferrat.github.io/HttpArena-Timeline/"
+     target="_blank" rel="noopener"
+     style="color:#7c3aed; text-decoration:none; font-weight:600;">HttpArena Timeline →</a>
+</div>
+<style>
+html.dark #timeline-link-bar { color:#94a3b8; }
+html.dark #timeline-link { color:#a78bfa; }
+#timeline-link:hover { text-decoration:underline; }
+</style>
+<script>
+(function() {
+  var TIMELINE_BASE = 'https://kaliumhexacyanoferrat.github.io/HttpArena-Timeline/';
+  /* Per-version: wrapper id and panel class. Composite has no entry here —
+     it doesn't map onto a single test+conns pair, so the bar keeps the
+     generic prefix + home URL for that view. */
+  var VERSION_CFG = {
+    h1iso:   { wrapper: 'lb-h1iso-wrapper',   panel: 'lb-panel'         },
+    h1wk:    { wrapper: 'lb-h1wk-wrapper',    panel: 'lb-panel'         },
+    h2:      { wrapper: 'lb-h2-wrapper',      panel: 'lb-panel-h2'      },
+    gateway: { wrapper: 'lb-gateway-wrapper', panel: 'lb-panel-gw'      },
+    h3:      { wrapper: 'lb-h3-wrapper',      panel: 'lb-panel-h3'      },
+    grpc:    { wrapper: 'lb-grpc-wrapper',    panel: 'lb-panel-grpc'    },
+    ws:      { wrapper: 'lb-ws-wrapper',      panel: 'lb-panel-ws'      }
+  };
+  var GENERIC_PREFIX  = '📈 Browse historical benchmark results on';
+  var SPECIFIC_PREFIX = '📈 Track this test over time:';
+
+  function setGeneric() {
+    var p = document.getElementById('timeline-link-prefix');
+    var l = document.getElementById('timeline-link');
+    if (p) p.textContent = GENERIC_PREFIX;
+    if (l) l.href = TIMELINE_BASE;
+  }
+
+  function update() {
+    var verEl = document.querySelector('.http-ver.active');
+    var v = verEl ? verEl.dataset.ver : 'composite';
+    var cfg = VERSION_CFG[v];
+    if (!cfg) { setGeneric(); return; }
+    var wrap = document.getElementById(cfg.wrapper);
+    if (!wrap) { setGeneric(); return; }
+    var panel = wrap.querySelector('.' + cfg.panel + '.active');
+    if (!panel || !panel.dataset.panel) { setGeneric(); return; }
+    var test = panel.dataset.panel;
+    var connTab = panel.querySelector('.lb-conn-tab.active');
+    var conns = connTab ? connTab.dataset.conns : null;
+    if (!conns || conns === 'best') {
+      /* "Best" aggregates across conn counts; pick the highest numeric
+         value declared on the panel for the timeline deep link. */
+      var declared = (panel.dataset.conns || '').split(',')
+        .filter(function(c) { return /^\d+$/.test(c); })
+        .map(Number);
+      if (!declared.length) { setGeneric(); return; }
+      conns = Math.max.apply(null, declared);
+    }
+    var p = document.getElementById('timeline-link-prefix');
+    var l = document.getElementById('timeline-link');
+    if (p) p.textContent = SPECIFIC_PREFIX;
+    if (l) l.href = TIMELINE_BASE + '#test=' + test + '-' + conns;
+  }
+
+  /* Poll once a frame for the first 2 seconds in case shortcode scripts
+     mutate state asynchronously, then settle into a low-frequency check
+     that catches any tab/filter interaction we didn't event-hook. */
+  var ticks = 0;
+  var fast = setInterval(function() {
+    update();
+    if (++ticks > 30) { clearInterval(fast); setInterval(update, 400); }
+  }, 60);
+})();
+</script>
+
 <div id="lb-h1iso-wrapper" style="display:none;">
 {{< leaderboard-h1-isolated >}}
 </div>
diff --git a/site/hugo.yaml b/site/hugo.yaml
index a72e42c9..20124bdf 100644
--- a/site/hugo.yaml
+++ b/site/hugo.yaml
@@ -16,6 +16,9 @@ menu:
     - name: Leaderboard
       pageRef: /leaderboard
       weight: 1
+    - name: Timeline
+      url: https://kaliumhexacyanoferrat.github.io/HttpArena-Timeline/
+      weight: 1.5
     - name: Knowledge Base
       pageRef: /docs
       weight: 2