diff --git a/docs/source/conf.py b/docs/source/conf.py
index 4bbeedf1..9b67a9d1 100644
--- a/docs/source/conf.py
+++ b/docs/source/conf.py
@@ -7,7 +7,48 @@
 on_rtd = os.environ.get('READTHEDOCS', None) == 'True'
 
 if on_rtd:
+    XEUS_CPP_ROOT = os.path.abspath('../..')
+    command_emscripten = f'''
+cd ../../;
+curl -L https://micro.mamba.pm/api/micromamba/linux-64/latest | tar -xvj bin/micromamba;
+export PATH="$PWD/bin:$PATH";
+export MAMBA_EXE="$PWD/bin/micromamba";
+export MAMBA_ROOT_PREFIX="/home/docs/checkouts/readthedocs.org/user_builds/xeus-cpp/conda/";
+__mamba_setup="$("$MAMBA_EXE" shell hook --shell bash --root-prefix "$MAMBA_ROOT_PREFIX" 2> /dev/null)";
+eval "$__mamba_setup";
+alias micromamba="$MAMBA_EXE";
+micromamba create -f environment-wasm-build.yml -y;
+micromamba activate xeus-cpp-wasm-build;
+micromamba create -f environment-wasm-host.yml --platform=emscripten-wasm32;
+mkdir -p build;
+cd build;
+export BUILD_PREFIX=$MAMBA_ROOT_PREFIX/xeus-cpp-wasm-build;
+export PREFIX=$MAMBA_ROOT_PREFIX/xeus-cpp-wasm-host;
+export SYSROOT_PATH=$BUILD_PREFIX/opt/emsdk/upstream/emscripten/cache/sysroot;
+emcmake cmake -DCMAKE_BUILD_TYPE=Release \\
+              -DCMAKE_PREFIX_PATH=$PREFIX \\
+              -DCMAKE_INSTALL_PREFIX=$PREFIX \\
+              -DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON \\
+              -DCMAKE_FIND_ROOT_PATH_MODE_PACKAGE=ON \\
+              -DSYSROOT_PATH=$SYSROOT_PATH \\
+              {XEUS_CPP_ROOT};
+emmake make -j $(nproc --all) install;
+cd {XEUS_CPP_ROOT};
+micromamba create -n xeus-lite-host jupyterlite-core=0.6 jupyter_server jupyterlite-xeus -c conda-forge -y;
+micromamba activate xeus-lite-host;
+python -m pip install jupyterlite-xeus jupyter_server;
+jupyter lite build --XeusAddon.prefix=$PREFIX \\
+                   --XeusAddon.mounts="$PREFIX/share/xeus-cpp/tagfiles:/share/xeus-cpp/tagfiles" \
+                   --XeusAddon.mounts="$PREFIX/etc/xeus-cpp/tags.d:/etc/xeus-cpp/tags.d" \
+                   --contents notebooks/xeus-cpp-lite-demo.ipynb \\
+                   --contents notebooks/smallpt.ipynb \\
+                   --contents notebooks/images/marie.png \\
+                   --contents notebooks/audio/audio.wav \\
+                   --output-dir $READTHEDOCS_OUTPUT/html/xeus-cpp;
+'''
     subprocess.call('cd ..; doxygen', shell=True)
+    subprocess.run(['bash', '-c', command_emscripten], check=True)
+    
 
 import sphinx_rtd_theme
 
@@ -32,4 +73,4 @@ def setup(app):
 highlight_language = 'c++'
 pygments_style = 'sphinx'
 todo_include_todos = False
-htmlhelp_basename = 'xeus-cppdoc'
\ No newline at end of file
+htmlhelp_basename = 'xeus-cppdoc'