diff -ur a/src/plugins/litehtml_viewer/litehtml/element.h c/src/plugins/litehtml_viewer/litehtml/element.h
--- a/src/plugins/litehtml_viewer/litehtml/element.h	2021-09-16 12:20:13.000000000 +0200
+++ c/src/plugins/litehtml_viewer/litehtml/element.h	2023-06-21 13:01:37.930883218 +0200
@@ -2,6 +2,7 @@
 #define LH_ELEMENT_H
 
 #include <memory>
+#include <cstdint>
 #include "stylesheet.h"
 #include "css_offsets.h"
 
@@ -17,9 +18,9 @@
 		friend class el_table;
 		friend class document;
 	public:
-		typedef std::shared_ptr<litehtml::element>			ptr;
-		typedef std::shared_ptr<const litehtml::element>	const_ptr;
-		typedef std::weak_ptr<litehtml::element>			weak_ptr;
+		typedef std::shared_ptr<litehtml::element>			ptr;
+		typedef std::shared_ptr<const litehtml::element>	const_ptr;
+		typedef std::weak_ptr<litehtml::element>			weak_ptr;
 	protected:
 		std::weak_ptr<element>		m_parent;
 		std::weak_ptr<litehtml::document>	m_doc;
@@ -131,7 +132,7 @@
 		virtual css_length			get_css_height() const;
 
 		virtual void				set_attr(const tchar_t* name, const tchar_t* val);
-		virtual const tchar_t*		get_attr(const tchar_t* name, const tchar_t* def = 0) const;
+		virtual const tchar_t*		get_attr(const tchar_t* name, const tchar_t* def = 0) const;
 		virtual void				apply_stylesheet(const litehtml::css& stylesheet);
 		virtual void				refresh_styles();
 		virtual bool				is_white_space() const;
diff -ur a/src/plugins/litehtml_viewer/litehtml/html.h c/src/plugins/litehtml_viewer/litehtml/html.h
--- a/src/plugins/litehtml_viewer/litehtml/html.h	2021-09-16 12:20:13.000000000 +0200
+++ c/src/plugins/litehtml_viewer/litehtml/html.h	2023-06-21 12:50:28.601801742 +0200
@@ -7,6 +7,7 @@
 #include <vector>
 #include <map>
 #include <cstring>
+#include <cstdint>
 #include <algorithm>
 #include <sstream>
 #include "os_types.h"
diff -ur a/src/plugins/litehtml_viewer/litehtml/html_tag.h c/src/plugins/litehtml_viewer/litehtml/html_tag.h
--- a/src/plugins/litehtml_viewer/litehtml/html_tag.h	2021-09-16 12:20:13.000000000 +0200
+++ c/src/plugins/litehtml_viewer/litehtml/html_tag.h	2023-06-21 13:02:33.554693984 +0200
@@ -1,6 +1,7 @@
 #ifndef LH_HTML_TAG_H
 #define LH_HTML_TAG_H
 
+#include <cstdint>
 #include "element.h"
 #include "style.h"
 #include "background.h"
@@ -138,7 +139,7 @@
 		virtual overflow			get_overflow() const override;
 
 		virtual void				set_attr(const tchar_t* name, const tchar_t* val) override;
-		virtual const tchar_t*		get_attr(const tchar_t* name, const tchar_t* def = 0) const override;
+		virtual const tchar_t*		get_attr(const tchar_t* name, const tchar_t* def = 0) const override;
 		virtual void				apply_stylesheet(const litehtml::css& stylesheet) override;
 		virtual void				refresh_styles() override;
 
diff -ur a/src/plugins/litehtml_viewer/litehtml/os_types.h c/src/plugins/litehtml_viewer/litehtml/os_types.h
--- a/src/plugins/litehtml_viewer/litehtml/os_types.h	2021-09-16 12:20:13.000000000 +0200
+++ c/src/plugins/litehtml_viewer/litehtml/os_types.h	2023-06-21 12:39:23.522749579 +0200
@@ -1,5 +1,6 @@
 #ifndef LH_OS_TYPES_H
 #define LH_OS_TYPES_H
+#include <cstdint>
 
 namespace litehtml
 {
diff -ur a/src/plugins/litehtml_viewer/litehtml/types.h c/src/plugins/litehtml_viewer/litehtml/types.h
--- a/src/plugins/litehtml_viewer/litehtml/types.h	2021-09-16 12:20:13.000000000 +0200
+++ c/src/plugins/litehtml_viewer/litehtml/types.h	2023-06-21 12:39:39.219551324 +0200
@@ -5,6 +5,7 @@
 #include <memory>
 #include <map>
 #include <vector>
+#include <cstdint>
 
 namespace litehtml
 {