diff --git a/static/app.css b/static/app.css
index 527e8fd..fce93c4 100644
--- a/static/app.css
+++ b/static/app.css
@@ -451,6 +451,9 @@ body {
 
 .cli-install-row { align-items: stretch; }
 .cli-install-cmd { display: inline-block; padding: 8px 12px; border-radius: 6px; background: var(--bg); border: 1px solid var(--border); font-size: 14px; user-select: all; overflow-x: auto; max-width: 100%; }
+.icon-btn { display: inline-flex; align-items: center; justify-content: center; padding: 8px 10px; }
+.icon-btn svg { width: 16px; height: 16px; }
+.icon-btn.ok { color: var(--primary); border-color: var(--primary); }
 
 .tools-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
 .tools-head h1 { margin: 0; }
diff --git a/static/app.js b/static/app.js
index 531c980..b0da4a9 100644
--- a/static/app.js
+++ b/static/app.js
@@ -155,6 +155,25 @@ function escapeHtml(s) {
   return (s || "").replace(/[&<>"']/g, (c) => ({ "&": "&amp;", "<": "&lt;", ">": "&gt;", '"': "&quot;", "'": "&#39;" }[c]));
 }
 
+// navigator.clipboard only exists in secure contexts (HTTPS/localhost);
+// fall back to a hidden textarea + execCommand for plain-HTTP LAN use.
+async function copyText(text) {
+  if (window.isSecureContext && navigator.clipboard) {
+    try { await navigator.clipboard.writeText(text); return true; } catch (e) { /* fall through */ }
+  }
+  const ta = document.createElement("textarea");
+  ta.value = text;
+  ta.setAttribute("readonly", "");
+  ta.style.position = "fixed";
+  ta.style.left = "-9999px";
+  document.body.appendChild(ta);
+  ta.select();
+  let ok = false;
+  try { ok = document.execCommand("copy"); } catch (e) {}
+  ta.remove();
+  return ok;
+}
+
 async function boot() {
   try {
     const me = await api("GET", "/api/me");
@@ -261,9 +280,22 @@ function showCli() {
   const back = backButton(showHome);
   const installCmd = "curl -fsSL " + window.location.origin + "/" + state.user + "/cli | bash";
   const cmdEl = el("code", { class: "cli-install-cmd", text: installCmd });
-  const copyBtn = el("button", {
-    class: "btn", text: "Copy",
-    onclick: () => { navigator.clipboard?.writeText(installCmd); copyBtn.textContent = "Copied!"; setTimeout(() => { copyBtn.textContent = "Copy"; }, 2000); },
+  const CLIP_ICON = '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><rect x="8" y="2" width="8" height="4" rx="1" ry="1"></rect><path d="M16 4h2a2 2 0 0 1 2 2v14a2 2 0 0 1-2 2H6a2 2 0 0 1-2-2V6a2 2 0 0 1 2-2h2"></path></svg>';
+  const CHECK_ICON = '<svg viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="20 6 9 17 4 12"></polyline></svg>';
+  const copyBtn = el("button", { class: "btn icon-btn", title: "Copy install command", "aria-label": "Copy install command", html: CLIP_ICON });
+  copyBtn.addEventListener("click", async () => {
+    const ok = await copyText(installCmd);
+    if (!ok) {  // last resort: select the text so the user can ⌘C
+      const sel = window.getSelection();
+      const range = document.createRange();
+      range.selectNodeContents(cmdEl);
+      sel.removeAllRanges();
+      sel.addRange(range);
+      return;
+    }
+    copyBtn.innerHTML = CHECK_ICON;
+    copyBtn.classList.add("ok");
+    setTimeout(() => { copyBtn.innerHTML = CLIP_ICON; copyBtn.classList.remove("ok"); }, 2000);
   });
 
   const card = el("div", { class: "help-card" }, [