diff --git a/lib/grover/js/processor.cjs b/lib/grover/js/processor.cjs
index 358851a..b1956e9 100644
--- a/lib/grover/js/processor.cjs
+++ b/lib/grover/js/processor.cjs
@@ -239,6 +239,15 @@ const _processPage = (async (convertAction, uriOrHtml, options) => {
       await page.goto(displayUrl || 'http://example.com', requestOptions);
     }
 
+    // Check for request errors immediately after navigation
+    if (requestErrors.length > 0) {
+      throw new GroverError("RequestFailedError", requestErrors);
+    }
+
+    if (pageErrors.length > 0) {
+      throw new GroverError("PageRenderError", pageErrors);
+    }
+    
     // add styles (if provided)
     const styleTagOptions = options.styleTagOptions; delete options.styleTagOptions;
     if (Array.isArray(styleTagOptions)) {