diff --git a/client/embed.js b/client/embed.js
index fa0a34d..78fa00c 100644
--- a/client/embed.js
+++ b/client/embed.js
@@ -101,13 +101,20 @@ const keyMatchRegex = /83e(0[1-9]|1[0-2])(\d\d)$/;
 function fixupBoardLinks (parentNode, contEleId, options) {
   for (const child of parentNode.childNodes) {
     if (child.tagName === 'A') {
-      const checkUrl = new URL(child.attributes.href.value);
-      if (!knownS83Hosts.includes(checkUrl.host)) {
+      let checkUrl;
+      try {
+        checkUrl = new URL(child.attributes.href.value);
+      } catch (err) {
+        // invalid URL, so nothing to fixup: skip
+        continue;
+      }
+
+      if (!knownS83Hosts.includes(checkUrl?.host)) {
         return;
       }
 
-      const s83Key = checkUrl.pathname.replace(/^\//, '');
-      if (s83Key.length !== 64) {
+      const s83Key = checkUrl?.pathname.replace(/^\//, '');
+      if (s83Key?.length !== 64) {
         return;
       }
 
diff --git a/client/root.tmpl.html b/client/root.tmpl.html
index e3f5991..3917b9d 100644
--- a/client/root.tmpl.html
+++ b/client/root.tmpl.html
@@ -135,7 +135,7 @@ <h3>Publicly listed <span id="ttl">(time-to-live)</i>:</h3>
           Additional un<a href="https://github.com/robinsloan/spring-83">specified</a> functionality provided:
           <ul>
             <li>Board <a href="https://github.com/rpj/spring83/blob/main/README.md#post-endpoint">minification & link shortening</a>.</li>
-            <li>A <a href="/embed.js">utility API</a> for embedding Springboards (w/ <a href="/embedded-json-example.html">embedded JSON extraction</a>).</li>
+            <li>A <a href="/embed.js">utility API</a> for embedding Springboards (w/ <a href="/embedded-json-example.html">JSON extraction</a>).</li>
             <li><a href="https://github.com/rpj/spring83/blob/main/README.md#post-endpoint#qr-code-generation">QR code generation</a> for board public keys &amp; links to.</li>
           </ul>
         </p>