diff --git a/.changeset/tender-bears-design.md b/.changeset/tender-bears-design.md
new file mode 100644
index 00000000000..372cac86a64
--- /dev/null
+++ b/.changeset/tender-bears-design.md
@@ -0,0 +1,5 @@
+---
+'@clerk/shared': patch
+---
+
+isPublishableKey(key) catches atob error
diff --git a/packages/shared/src/keys.ts b/packages/shared/src/keys.ts
index f8f21489c07..e1ea3eee6b9 100644
--- a/packages/shared/src/keys.ts
+++ b/packages/shared/src/keys.ts
@@ -70,13 +70,17 @@ export function parsePublishableKey(
 }
 
 export function isPublishableKey(key: string) {
-  key = key || '';
+  try {
+    key = key || '';
 
-  const hasValidPrefix = key.startsWith(PUBLISHABLE_KEY_LIVE_PREFIX) || key.startsWith(PUBLISHABLE_KEY_TEST_PREFIX);
+    const hasValidPrefix = key.startsWith(PUBLISHABLE_KEY_LIVE_PREFIX) || key.startsWith(PUBLISHABLE_KEY_TEST_PREFIX);
 
-  const hasValidFrontendApiPostfix = isomorphicAtob(key.split('_')[2] || '').endsWith('$');
+    const hasValidFrontendApiPostfix = isomorphicAtob(key.split('_')[2] || '').endsWith('$');
 
-  return hasValidPrefix && hasValidFrontendApiPostfix;
+    return hasValidPrefix && hasValidFrontendApiPostfix;
+  } catch {
+    return false;
+  }
 }
 
 export function createDevOrStagingUrlCache() {