diff --git a/builtins/mathjax/CMakeLists.txt b/builtins/mathjax/CMakeLists.txt
index efa31e11f560a..7f25bc56ba13c 100644
--- a/builtins/mathjax/CMakeLists.txt
+++ b/builtins/mathjax/CMakeLists.txt
@@ -1,7 +1,7 @@
 ExternalProject_Add(
    MATHJAX
-   URL ${CMAKE_SOURCE_DIR}/documentation/doxygen/mathjax.tar.gz
-   URL_HASH SHA256=c5e22e60430a65963a87ab4dcc8856b9be5bd434d3b3871f27ee65b584c3c3ea
+   URL ${lcgpackages}/mathjax-3.2.0.tar.gz
+   URL_HASH SHA256=6847f1cfdd980afbe31b466474da301a56ab859a67d8035442b052dd4ac2fa03
    CONFIGURE_COMMAND ""
    BUILD_COMMAND ""
    INSTALL_COMMAND ""
diff --git a/cmake/modules/SearchInstalledSoftware.cmake b/cmake/modules/SearchInstalledSoftware.cmake
index c0a2b1cb65eb7..3d6d734f6aee6 100644
--- a/cmake/modules/SearchInstalledSoftware.cmake
+++ b/cmake/modules/SearchInstalledSoftware.cmake
@@ -1134,7 +1134,12 @@ if(webgui)
     add_subdirectory(builtins/openui5)
   endif()
   add_subdirectory(builtins/rendercore)
-  add_subdirectory(builtins/mathjax)
+  ROOT_CHECK_CONNECTION("builtin_mathjax=ON")
+  if(NO_CONNECTION)
+    message(WARNING "No internet connection, jsroot/webgui will not be able to use the optional mathjax engine for rendering")
+  else()
+    add_subdirectory(builtins/mathjax)
+  endif()
 endif()
 
 #------------------------------------------------------------------------------------
diff --git a/documentation/doxygen/Makefile b/documentation/doxygen/Makefile
index f8edde4769ff2..4080c2bcd889b 100644
--- a/documentation/doxygen/Makefile
+++ b/documentation/doxygen/Makefile
@@ -54,6 +54,7 @@ filter:
 
 mathjax:
 	$(call MkDir,$(DOXYGEN_IMAGE_PATH))
+	curl -o mathjax.tar.gz https://lcgpackages.web.cern.ch/tarFiles/sources/mathjax-3.2.0.tar.gz
 	tar xfz mathjax.tar.gz -C $(DOXYGEN_IMAGE_PATH)
 
 js:
diff --git a/documentation/doxygen/mathjax.tar.gz b/documentation/doxygen/mathjax.tar.gz
deleted file mode 100644
index 9b4d2a940bfad..0000000000000
Binary files a/documentation/doxygen/mathjax.tar.gz and /dev/null differ