diff --git a/script.html b/script.html
index fe1c37d..9e9bf17 100644
--- a/script.html
+++ b/script.html
@@ -377,7 +377,12 @@ function render(r) {
       + 'words costs about a hundredth of a cent. Run it through in your pet’s voice '
       + 'over the opening stills first, and only film once the timing and the jokes land.</p>'
       + '<button type="button" class="btn ghost" id="pzmake">Speak the script</button>'
+      + '<button type="button" class="btn" id="alignbtn" style="margin-left:8px">Cut it to the clock</button>'
       + '<span class="foot" style="margin-left:12px" id="pznote"></span>'
+      + '<p class="foot" style="margin:10px 0 0">Cutting to the clock speaks the whole piece once, '
+      + 'measures where every word actually falls, and moves the shot boundaries to real word '
+      + 'endings. It rewrites how the lines are divided &mdash; not the words themselves.</p>'
+      + '<div id="alignout" style="margin-top:14px"></div>'
       + '<div id="pzout" style="margin-top:16px"></div>'
       + '</div>'
       + '<h2 class="sec" style="margin-top:34px">The shots</h2>'
@@ -531,6 +536,7 @@ function wire(locked) {
   });
   bindPics();
   bindPreviz();
+  bindAlign();
   bindFilm((DATA && DATA.project) || {});
   bindPost();
   if (locked) { bindBottom(); return; }
@@ -1013,6 +1019,67 @@ function pzPaint(lines) {
   };
 }
 
+function bindAlign() {
+  var b = document.getElementById("alignbtn");
+  if (!b) return;
+  var out = document.getElementById("alignout");
+
+  function paint(r) {
+    var bought = ((DATA && DATA.script && DATA.script.segments) || []).length * 8;
+    var filmed = r.filmed || 0;
+    out.innerHTML = '<p class="foot" style="margin:0 0 8px">Measured: '
+      + (r.spoken || 0).toFixed(1) + 's spoken, about ' + filmed.toFixed(1)
+      + 's filmed, against ' + bought + 's of shots.</p>'
+      + (r.audio ? '<audio controls src="' + esc(r.audio) + '" style="width:100%;max-width:420px"></audio>' : '')
+      + (r.shots || []).map(function (s) {
+          var fit = Math.abs((s.filmed || 0) - 8) <= 1.2;
+          return '<div class="foot" style="padding:6px 0;border-top:1px solid var(--line)">'
+            + 'shot ' + s.index + ' &middot; ' + (s.start || 0).toFixed(1) + '-'
+            + (s.end || 0).toFixed(1) + 's spoken &middot; ~' + (s.filmed || 0).toFixed(1) + 's filmed'
+            + (fit ? '' : ' <span style="color:var(--accent2)">off the clock</span>')
+            + '<br>' + esc(s.line || "") + '</div>';
+        }).join("")
+      + (filmed < bought - 1.5
+          ? '<div class="warn" style="margin-top:12px">The whole piece only runs about '
+            + filmed.toFixed(1) + ' seconds filmed, but ' + bought + ' seconds are being shot. '
+            + 'No arrangement of these words fills the video &mdash; it needs more written, or a '
+            + 'shorter length.</div>'
+          : '')
+      + (filmed > bought + 1.5
+          ? '<div class="warn" style="margin-top:12px">The whole piece runs about '
+            + filmed.toFixed(1) + ' seconds filmed against ' + bought + ' seconds of video, so the '
+            + 'end would be cut off. Trim it, or buy more length.</div>'
+          : '');
+  }
+
+  b.onclick = async function () {
+    hideMsg("msg");
+    b.disabled = true; b.textContent = "Measuring…";
+    var r = await api("align_script", { email: email, project_id: pid, refresh: true });
+    if (r.ok && r.pending) {
+      var waited = 0;
+      r = await new Promise(function (done) {
+        var t = setInterval(async function () {
+          waited += 4;
+          var g = await api("align_script", { email: email, project_id: pid });
+          if (g.ok && !g.pending) { clearInterval(t); done(g); return; }
+          if (waited > 240) { clearInterval(t); done({ ok: false, error: "That is taking unusually long." }); }
+        }, 4000);
+      });
+    }
+    b.disabled = false; b.textContent = "Cut it to the clock";
+    if (!r.ok) { showMsg("msg", r.error || "Could not measure that."); return; }
+    if (r.note) { showMsg("msg", r.note); return; }
+    paint(r);
+    showMsg("msg", "Shots re-cut at real word endings.", "ok");
+    load();
+  };
+
+  api("align_script", { email: email, project_id: pid }).then(function (r) {
+    if (r && r.ok && !r.pending && r.audio) paint(r);
+  });
+}
+
 function bindPreviz() {
   var b = document.getElementById("pzmake");
   if (!b) return;