diff --git a/scripts/xeus-cpp-build.py b/scripts/xeus-cpp-build.py
new file mode 100644
index 00000000..a4f05f99
--- /dev/null
+++ b/scripts/xeus-cpp-build.py
@@ -0,0 +1,281 @@
+import argparse
+import os
+import platform
+import subprocess
+from pathlib import Path
+from selenium import webdriver
+from selenium.common.exceptions import WebDriverException
+
+
+def is_safari_driver_enabled():
+    try:
+        driver = webdriver.Safari()
+        driver.quit()
+        return True
+    except WebDriverException:
+        return False
+
+
+def run_browser_tests_linux(build_dir, emrun_path):
+    browser_install_cmd = (
+        "wget https://dl.google.com/linux/direct/google-chrome-stable_current_amd64.deb && "
+        "dpkg-deb -x google-chrome-stable_current_amd64.deb $PWD/chrome && "
+        "wget https://ftp.mozilla.org/pub/firefox/releases/138.0.1/linux-x86_64/en-GB/firefox-138.0.1.tar.xz && "
+        "tar -xJf firefox-138.0.1.tar.xz"
+    )
+    subprocess.run(browser_install_cmd, cwd=build_dir / "test", shell=True)
+    browsers = {"Firefox": "firefox", "Google Chrome": "google-chrome"}
+    for name, browser in browsers.items():
+        print(f"\nRunning headless tests in {name}")
+        browser_args = "--headless"
+        if "chrome" in name:
+            browser_args += " --no-sandbox"
+
+        browser_test_cmd = (
+            'eval "$(micromamba shell hook --shell bash)" && '
+            "micromamba activate xeus-cpp-wasm-build && "
+            f'export PATH="{build_dir}/test/chrome/opt/google/chrome/:{build_dir}/test/firefox/:$PATH" && '
+            f'python {emrun_path} --browser="{browser}" --kill_exit --timeout 60 --browser-args="{browser_args}" test_xeus_cpp.html'
+        )
+
+        subprocess.run(browser_test_cmd, cwd=build_dir / "test", shell=True)
+
+
+def run_browser_tests_macos(repo_dir, build_dir, emrun_path):
+    browser_install_cmd = (
+        'wget "https://download.mozilla.org/?product=firefox-latest&os=osx&lang=en-US" -O Firefox-latest.dmg && '
+        "hdiutil attach Firefox-latest.dmg && "
+        "cp -r /Volumes/Firefox/Firefox.app . && "
+        "hdiutil detach /Volumes/Firefox && "
+        "wget https://dl.google.com/chrome/mac/stable/accept_tos%3Dhttps%253A%252F%252Fwww.google.com%252Fintl%252Fen_ph%252Fchrome%252Fterms%252F%26_and_accept_tos%3Dhttps%253A%252F%252Fpolicies.google.com%252Fterms/googlechrome.pkg && "
+        "pkgutil --expand-full googlechrome.pkg google-chrome"
+    )
+    subprocess.run(browser_install_cmd, cwd=build_dir / "test", shell=True)
+    browsers = {"Firefox": "firefox", "Google Chrome": "Google Chrome"}
+    for name, browser in browsers.items():
+        print(f"\nRunning Emscripten C++ tests in {name}")
+        browser_args = "--headless"
+        if "Chrome" in name:
+            browser_args += " --no-sandbox"
+
+        browser_test_cmd = (
+            'eval "$(micromamba shell hook --shell bash)" && '
+            "micromamba activate xeus-cpp-wasm-build && "
+            f'export PATH="{build_dir}/test/Firefox.app/Contents/MacOS:{build_dir}/test/google-chrome/GoogleChrome.pkg/Payload/Google Chrome.app/Contents/MacOS/:$PATH" && '
+            f'python {emrun_path} --browser="{browser}" --kill_exit --timeout 60 --browser-args="{browser_args}" test_xeus_cpp.html'
+        )
+
+        subprocess.run(browser_test_cmd, cwd=build_dir / "test", shell=True)
+
+    if is_safari_driver_enabled():
+        print("\nRunning Emscripten C++ tests in Safari")
+        safari_cmd = (
+            'eval "$(micromamba shell hook --shell bash)" && '
+            "micromamba activate xeus-cpp-wasm-build && "
+            f'python {emrun_path} --no_browser --kill_exit --kill_exit --timeout 60 --browser-args="--headless --no-sandbox" test_xeus_cpp.html & '
+            f"python {repo_dir}/scripts/browser_tests_safari.py test_xeus_cpp.html"
+        )
+        subprocess.run(safari_cmd, cwd=build_dir / "test", shell=True)
+    else:
+        print(
+            "Safari WebDriver is NOT enabled, so not running browser tests in Safari."
+        )
+
+
+def run_lite(repo_dir, prefix):
+    subprocess.run(
+        [
+            "micromamba",
+            "create",
+            "-n",
+            "xeus-lite-host",
+            "jupyterlite-core=0.6",
+            "jupyter_server",
+            "jupyterlite-xeus",
+            "-c",
+            "conda-forge",
+            "-y",
+        ]
+    )
+
+    serve_cmd = [
+        'eval "$(micromamba shell hook --shell bash)" && '
+        "micromamba activate xeus-lite-host && "
+        "jupyter lite serve "
+        f"--XeusAddon.prefix={prefix} "
+        f"--XeusAddon.mounts={prefix}/share/xeus-cpp/tagfiles:/share/xeus-cpp/tagfiles "
+        f"--XeusAddon.mounts={prefix}/etc/xeus-cpp/tags.d:/etc/xeus-cpp/tags.d "
+        f"--contents {repo_dir}/README.md "
+        f"--contents {repo_dir}/notebooks/xeus-cpp-lite-demo.ipynb "
+        f"--contents {repo_dir}/notebooks/smallpt.ipynb "
+        f"--contents {repo_dir}/notebooks/images/marie.png "
+        f"--contents {repo_dir}/notebooks/audio/audio.wav "
+    ]
+    subprocess.run(serve_cmd, cwd=repo_dir, shell=True)
+
+
+def build_native(launch_lab=False):
+    repo_dir = Path.cwd()
+
+    subprocess.run(["micromamba", "create", "-f", "environment-dev.yml", "-y"])
+    subprocess.run(
+        [
+            "micromamba",
+            "install",
+            "-n",
+            "xeus-cpp",
+            "jupyterlab",
+            "-c",
+            "conda-forge",
+            "-y",
+        ]
+    )
+
+    prefix_path = os.environ.get("MAMBA_ROOT_PREFIX")
+    build_dir = repo_dir / "build"
+    build_dir.mkdir(exist_ok=True)
+
+    cmake_cmd = [
+        "micromamba",
+        "run",
+        "-n",
+        "xeus-cpp",
+        "cmake",
+        "..",
+        f"-DCMAKE_PREFIX_PATH={prefix_path}/envs/xeus-cpp/",
+        f"-DCMAKE_INSTALL_PREFIX={prefix_path}/envs/xeus-cpp/",
+        "-DCMAKE_INSTALL_LIBDIR=lib",
+    ]
+
+    subprocess.run(cmake_cmd, cwd=build_dir)
+    subprocess.run(
+        ["micromamba", "run", "-n", "xeus-cpp", "make", "check-xeus-cpp"], cwd=build_dir
+    )
+
+    subprocess.run(["make", "install"], cwd=build_dir)
+    subprocess.run(
+        [f"{prefix_path}/envs/xeus-cpp/bin/pytest", "-sv", "test_xcpp_kernel.py"],
+        cwd=repo_dir / "test",
+    )
+
+    if launch_lab:
+        subprocess.run([f"{prefix_path}/envs/xeus-cpp/bin/jupyter-lab"])
+
+
+def build_emscripten(run_browser_tests_flag=False, launch_lite=False):
+    repo_dir = Path.cwd()
+
+    subprocess.run(["micromamba", "create", "-f", "environment-wasm-build.yml", "-y"])
+    subprocess.run(
+        [
+            "micromamba",
+            "create",
+            "-f",
+            "environment-wasm-host.yml",
+            "--platform=emscripten-wasm32",
+            "-y",
+        ]
+    )
+
+    mamba_root = os.environ.get("MAMBA_ROOT_PREFIX")
+
+    build_prefix = f"{mamba_root}/envs/xeus-cpp-wasm-build"
+    prefix = f"{mamba_root}/envs/xeus-cpp-wasm-host"
+    sysroot_path = f"{build_prefix}/opt/emsdk/upstream/emscripten/cache/sysroot"
+
+    subprocess.run(
+        [
+            "micromamba",
+            "create",
+            "-n",
+            "node-env",
+            "-c",
+            "conda-forge",
+            "nodejs=22",
+            "-y",
+        ]
+    )
+
+    build_dir = repo_dir / "build"
+    build_dir.mkdir(exist_ok=True)
+
+    cmake_cmd = (
+        'eval "$(micromamba shell hook --shell bash)" && '
+        "micromamba activate xeus-cpp-wasm-build && "
+        f"export PATH={mamba_root}/envs/node-env/bin:$PATH &&"
+        "emcmake cmake "
+        f"-DCMAKE_BUILD_TYPE=Release "
+        f"-DCMAKE_INSTALL_PREFIX={prefix} "
+        "-DXEUS_CPP_EMSCRIPTEN_WASM_BUILD=ON "
+        f"-DCMAKE_FIND_ROOT_PATH={prefix} "
+        f"-DSYSROOT_PATH={sysroot_path} "
+        ".."
+    )
+    subprocess.run(cmake_cmd, cwd=build_dir, shell=True)
+    make_cmd = (
+        'eval "$(micromamba shell hook --shell bash)" && '
+        "micromamba activate xeus-cpp-wasm-build && "
+        f"export PATH={mamba_root}/envs/node-env/bin:$PATH &&"
+        "emmake make check-xeus-cpp"
+    )
+    subprocess.run(make_cmd, cwd=build_dir, shell=True)
+    install_cmd = (
+        f"export PATH={mamba_root}/node-env/bin:$PATH &&"
+        'eval "$(micromamba shell hook --shell bash)" && '
+        "micromamba activate xeus-cpp-wasm-build && "
+        f"export PATH={mamba_root}/envs/node-env/bin:$PATH &&"
+        "emmake make install"
+    )
+    subprocess.run(install_cmd, cwd=build_dir, shell=True)
+
+    if run_browser_tests_flag:
+        if platform.system() == "Darwin":
+            run_browser_tests_macos(
+                repo_dir=repo_dir,
+                build_dir=repo_dir / "build",
+                emrun_path=f"{build_prefix}/bin/emrun.py",
+            )
+        elif platform.system() == "Linux":
+            run_browser_tests_linux(
+                build_dir=repo_dir / "build", emrun_path=f"{build_prefix}/bin/emrun.py"
+            )
+
+    if launch_lite:
+        run_lite(repo_dir=repo_dir, prefix=prefix)
+
+
+def main():
+    parser = argparse.ArgumentParser(
+        description="Build xeus-cpp (native or emscripten)."
+    )
+    parser.add_argument(
+        "--build",
+        choices=["native", "emscripten"],
+        default="native",
+        help="Choose build type (default: native)",
+    )
+    parser.add_argument(
+        "--run-browser-tests",
+        action="store_true",
+        help="Run headless browser tests after Emscripten build",
+    )
+    parser.add_argument(
+        "--launch-lite",
+        action="store_true",
+        help="Launch a local JupyterLite demo after Emscripten build",
+    )
+    parser.add_argument(
+        "--launch-lab", action="store_true", help="Launch JupyterLab after native build"
+    )
+    args = parser.parse_args()
+
+    if args.build == "emscripten":
+        build_emscripten(
+            run_browser_tests_flag=args.run_browser_tests, launch_lite=args.launch_lite
+        )
+    else:
+        build_native(launch_lab=args.launch_lab)
+
+
+if __name__ == "__main__":
+    main()