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diff --git a/src/util/preview.h b/src/util/preview.h
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+// SPDX-License-Identifier: GPL-2.0-or-later
+/**
+ * @file
+ * Utility functions for previewing icon representation.
+ */
+/* Authors:
+ *   Jon A. Cruz
+ *   Bob Jamison
+ *   Other dudes from The Inkscape Organization
+ *   Abhishek Sharma
+ *   Anshudhar Kumar Singh <anshudhar2001@gmail.com>
+ *
+ * Copyright (C) 2004 Bob Jamison
+ * Copyright (C) 2005,2010 Jon A. Cruz
+ * Copyright (C) 2021 Anshudhar Kumar Singh
+ *
+ * Released under GNU GPL v2+, read the file 'COPYING' for more information.
+ */
+
+#ifndef SP_PREVIEW_UTIL_H
+#define SP_PREVIEW_UTIL_H
+
+#include <glibmm/main.h>
+#include <gdk-pixbuf/gdk-pixbuf.h>
+
+#include "display/drawing.h"
+
+class SPDocument;
+class SPItem;
+
+namespace Inkscape {
+namespace UI {
+namespace PREVIEW {
+
+// takes doc, drawing, icon, and icon name to produce pixels
+GdkPixbuf *render_preview(SPDocument *doc, Inkscape::Drawing &drawing, SPItem *item,
+                          unsigned width_in, unsigned height_in, Geom::OptRect *dboxIn = nullptr);
+
+} // namespace PREVIEW
+} // namespace UI
+} // namespace Inkscape
+
+#endif