diff --git a/src/extract-pages.js b/src/extract-pages.js
index 4f64f940..6c94acc7 100644
--- a/src/extract-pages.js
+++ b/src/extract-pages.js
@@ -7,14 +7,19 @@
 const { JSDOM } = require("jsdom");
 
 module.exports = async function (url) {
-  const dom = await JSDOM.fromURL(url);
-  const window = dom.window;
-  const document = window.document;
+  try {
+    const dom = await JSDOM.fromURL(url);
+    const window = dom.window;
+    const document = window.document;
 
-  const allPages = [...document.querySelectorAll('.toc a[href]')]
-    .map(link => link.href)
-    .map(url => url.split('#')[0])
-    .filter(url => url !== window.location.href);
-  const pageSet = new Set(allPages);
-  return [...pageSet];
+    const allPages = [...document.querySelectorAll('.toc a[href]')]
+      .map(link => link.href)
+      .map(url => url.split('#')[0])
+      .filter(url => url !== window.location.href);
+    const pageSet = new Set(allPages);
+    return [...pageSet];
+  }
+  catch (err) {
+    throw new Error(`Could not extract pages from ${url} with JSDOM: ${err.message}`);
+  }
 };
\ No newline at end of file