diff --git a/.gitignore b/.gitignore
index e420f75..45ea2fa 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,4 +4,4 @@ dist/
 yarn.lock
 coverage/
 .vscode
-package-lock.json
\ No newline at end of file
+package-lock.json
diff --git a/package.json b/package.json
index 352da94..225fb7d 100644
--- a/package.json
+++ b/package.json
@@ -39,8 +39,8 @@
     "production": "webpack --mode production --progress --hide-modules",
     "coverage": "open coverage/lcov-report/index.html",
     "coveralls": "cat coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js",
-		"start": "webpack-dev-server --public http://localhost:8080/test/manual --open",
-		"standard:fix": "standard --fix"
+    "start": "webpack-dev-server --public http://localhost:8080/test/manual --open",
+    "standard:fix": "standard --fix"
   },
   "author": "Rodrigo Vieira <rodrigo@crabbly.com>",
   "standard": {
diff --git a/src/js/init.js b/src/js/init.js
index bfda427..edb2526 100644
--- a/src/js/init.js
+++ b/src/js/init.js
@@ -20,6 +20,7 @@ export default {
       headerStyle: 'font-weight: 300;',
       maxWidth: 800,
       properties: null,
+      rowsBefore: null,
       gridHeaderStyle: 'font-weight: bold; padding: 5px; border: 1px solid #dddddd;',
       gridStyle: 'border: 1px solid lightgray; margin-bottom: -1px;',
       showModal: false,
@@ -65,9 +66,10 @@ export default {
         break
       case 'object':
         params.printable = args.printable
+        params.rowsBefore = args.rowsBefore
         params.fallbackPrintable = typeof args.fallbackPrintable !== 'undefined' ? args.fallbackPrintable : params.printable
         params.fallbackPrintable = params.base64 ? `data:application/pdf;base64,${params.fallbackPrintable}` : params.fallbackPrintable
-        for (var k in params) {
+        for (const k in params) {
           if (k === 'printable' || k === 'fallbackPrintable') continue
 
           params[k] = typeof args[k] !== 'undefined' ? args[k] : params[k]
diff --git a/src/js/json.js b/src/js/json.js
index 9aa2a5a..ef83f11 100644
--- a/src/js/json.js
+++ b/src/js/json.js
@@ -56,6 +56,11 @@ function jsonToHTML (params) {
     htmlData += '<thead>'
   }
 
+  // Add rows before normal header
+  if (params.rowsBefore) {
+    htmlData += params.rowsBefore
+  }
+
   // Add the table header row
   htmlData += '<tr>'
 
diff --git a/test/manual/index.html b/test/manual/index.html
index 0b606ec..ffa44fe 100644
--- a/test/manual/index.html
+++ b/test/manual/index.html
@@ -85,6 +85,7 @@
 
       printJS({
         printable: data,
+        rowsBefore: '<tr><th colspan=2>xxxxxx</th></tr>',
         properties: [
           {
             field: 'test1',
@@ -305,4 +306,4 @@ <h2>Form Elements</h2>
       </div>
     </section>
   </body>
-</html>
\ No newline at end of file
+</html>