diff --git a/gtk/css/gtkcssparser.c b/gtk/css/gtkcssparser.c
index bdecc2c729..4160565242 100644
--- a/gtk/css/gtkcssparser.c
+++ b/gtk/css/gtkcssparser.c
@@ -228,6 +228,12 @@ gtk_css_parser_get_file (GtkCssParser *self)
   return self->file;
 }
 
+GBytes *
+gtk_css_parser_get_bytes (GtkCssParser *self)
+{
+  return gtk_css_tokenizer_get_bytes (gtk_css_tokenizers_get (&self->tokenizers, 0)->tokenizer);
+}
+
 /**
  * gtk_css_parser_resolve_url:
  * @self: a `GtkCssParser`
diff --git a/gtk/css/gtkcssparserprivate.h b/gtk/css/gtkcssparserprivate.h
index d4bc031623..d7a4c68386 100644
--- a/gtk/css/gtkcssparserprivate.h
+++ b/gtk/css/gtkcssparserprivate.h
@@ -70,6 +70,7 @@ GtkCssParser *          gtk_css_parser_ref                      (GtkCssParser
 void                    gtk_css_parser_unref                    (GtkCssParser                   *self);
 
 GFile *                 gtk_css_parser_get_file                 (GtkCssParser                   *self) G_GNUC_PURE;
+GBytes *                gtk_css_parser_get_bytes                (GtkCssParser                   *self) G_GNUC_PURE;
 GFile *                 gtk_css_parser_resolve_url              (GtkCssParser                   *self,
                                                                  const char                     *url);