diff --git a/qutebrowser/browser/tab.py b/qutebrowser/browser/tab.py
index 384e38282..e1e6b3092 100644
--- a/qutebrowser/browser/tab.py
+++ b/qutebrowser/browser/tab.py
@@ -511,6 +511,9 @@ class AbstractTab(QWidget):
     def run_webaction(self, action):
         raise NotImplementedError
 
+    def set_html(self, html, base_url):
+        raise NotImplementedError
+
     def __repr__(self):
         url = utils.elide(self.cur_url.toDisplayString(QUrl.EncodeUnicode),
                           100)
diff --git a/qutebrowser/browser/webengine/webenginetab.py b/qutebrowser/browser/webengine/webenginetab.py
index 6543d7c34..5b36e91e2 100644
--- a/qutebrowser/browser/webengine/webenginetab.py
+++ b/qutebrowser/browser/webengine/webenginetab.py
@@ -159,6 +159,13 @@ class WebEngineViewTab(tab.AbstractTab):
     def run_webaction(self, action):
         self._widget.triggerPageAction(action)
 
+    def set_html(self, html, base_url):
+        # FIXME check this and raise an exception if too big:
+        # Warning: The content will be percent encoded before being sent to the
+        # renderer via IPC. This may increase its size. The maximum size of the
+        # percent encoded content is 2 megabytes minus 30 bytes.
+        self._widget.setHtml(html, base_url)
+
     def _connect_signals(self):
         view = self._widget
         page = view.page()
diff --git a/qutebrowser/browser/webkit/webkittab.py b/qutebrowser/browser/webkit/webkittab.py
index 1ccd1b3fd..255ab7b63 100644
--- a/qutebrowser/browser/webkit/webkittab.py
+++ b/qutebrowser/browser/webkit/webkittab.py
@@ -502,6 +502,9 @@ class WebViewTab(tab.AbstractTab):
     def run_webaction(self, action):
         self._widget.triggerPageAction(action)
 
+    def set_html(self, html, base_url):
+        self._widget.setHtml(html, base_url)
+
     def _connect_signals(self):
         view = self._widget
         page = view.page()