diff --git a/index.html b/index.html
index 8b2ac5d..e19ef99 100644
--- a/index.html
+++ b/index.html
@@ -139,6 +139,11 @@ tbody tr:hover{background:color-mix(in srgb,var(--accent-soft) 50%,transparent)}
 .btn:disabled{opacity:.45;cursor:not-allowed;filter:none}
 .note{font-size:13px;color:var(--muted);margin-top:16px;line-height:1.55}
 .note strong{color:var(--ink)}
+.btn-share{
+  display:block;margin:0 auto 8px;font:inherit;font-size:13px;cursor:pointer;
+  padding:8px 16px;border-radius:8px;border:1px solid var(--line-strong);
+  background:var(--panel);color:var(--accent);
+}
 
 .invoice{display:none}
 .invoice.show{display:block}
@@ -301,6 +306,7 @@ footer a{color:var(--accent);text-decoration:none}
           <div class="row"><span>Status</span><span id="iv-status2">—</span></div>
           <div class="row"><span>Server</span><span id="iv-url">—</span></div>
           <div id="qrcode"></div>
+          <button class="btn-share" id="share-btn">Share invoice</button>
           <p class="note">
             <strong>Please make sure your server is online before you attempt to add it.</strong>
           </p>
@@ -493,6 +499,7 @@ document.getElementById('submit').addEventListener('click', async () => {
   document.getElementById('iv-status2').textContent = '—';
   document.getElementById('iv-url').textContent = '—';
   document.getElementById('qrcode').innerHTML = '';
+  document.getElementById('share-btn').textContent = 'Share invoice';
   document.getElementById('terms-box').classList.remove('show');
   document.getElementById('terms-check').checked = false;
   document.getElementById('terms-accept').disabled = true;
@@ -519,6 +526,18 @@ document.getElementById('submit').addEventListener('click', async () => {
     const qrEl = document.getElementById('qrcode');
     qrEl.innerHTML = '';
     new QRCode(qrEl, invoiceuri);
+    const shareBtn = document.getElementById('share-btn');
+    shareBtn.textContent = 'Share invoice';
+    shareBtn.onclick = function () {
+      if (navigator.share) {
+        navigator.share({ title: 'BAL Invoice', text: invoiceuri });
+      } else {
+        navigator.clipboard.writeText(invoiceuri).then(() => {
+          this.textContent = 'Copied!';
+          setTimeout(() => this.textContent = 'Share invoice', 2000);
+        });
+      }
+    };
     const serverUrl = result.url || url;
     const infoUrl = serverUrl + '/' + (result.chain || chain) + '/info';
     document.getElementById('iv-url').textContent = serverUrl;