diff --git a/index.html b/index.html
index 90e5f56..144d7fa 100644
--- a/index.html
+++ b/index.html
@@ -57,11 +57,12 @@
     font: 12.5px/1.45 ui-monospace, Menlo, monospace; color: #9aa4b2;
     word-break: break-word; padding-top: 8px; user-select: text;
   }
-  .entry .v input {
+  .entry .v textarea {
     width: 100%; background: #0d0f12; color: #e6e8eb; border: 1px solid #2a313a;
-    border-radius: 8px; padding: 7px 9px; font-size: 14px;
+    border-radius: 8px; padding: 7px 9px; font-size: 14px; line-height: 1.45;
+    min-height: 40px; resize: none; overflow-y: auto; max-height: 180px;
   }
-  .entry .v input:focus { border-color: #1f7a3d; outline: none; }
+  .entry .v textarea:focus { border-color: #1f7a3d; outline: none; }
   @media (max-width: 640px) {
     /* Mobile: key on top, value below */
     .entry { grid-template-columns: 1fr; gap: 3px; }
@@ -174,21 +175,23 @@ function renderForm() {
       k.textContent = b.key;                    // read-only by design
       const v = document.createElement("div");
       v.className = "v";
-      const input = document.createElement("input");
-      input.type = "text";
-      input.spellcheck = false;
-      input.autocapitalize = "off";
-      input.autocorrect = "off";
-      input.value = b.value;
-      input.addEventListener("input", () => {
-        b.value = input.value;
+      const area = document.createElement("textarea");
+      area.rows = 1;
+      area.spellcheck = false;
+      area.autocapitalize = "off";
+      area.autocorrect = "off";
+      area.value = b.value;
+      area.addEventListener("input", () => {
+        b.value = area.value;
         localDirty = true;
         updateBanner();
+        autoGrow(area);
       });
-      v.appendChild(input);
+      v.appendChild(area);
       row.appendChild(k);
       row.appendChild(v);
       el.appendChild(row);
+      autoGrow(area);
       continue;
     }
     // Unparseable data line — never let the form clobber a file we don't
@@ -201,6 +204,12 @@ function renderForm() {
   $("notice").style.display = "none";
 }
 
+// Grow a value textarea to fit its content (cap at 180px, then scroll).
+function autoGrow(el) {
+  el.style.height = "auto";
+  el.style.height = Math.min(el.scrollHeight + 2, 180) + "px";
+}
+
 function switchMode(m) {
   mode = m;
   $("btnForm").classList.toggle("on", m === "form");