diff --git a/infra/portable/README.md b/infra/portable/README.md
index 058fab2b..b2ae6b15 100644
--- a/infra/portable/README.md
+++ b/infra/portable/README.md
@@ -2,3 +2,7 @@
 
  - This directory contains files and scripts to make portable *.zip* packages of Thorium for Linux and Windows.
  - Run a script with `--help` to see usage.
+ - For `make_portable_win.py`, make sure
+   [7-zip](https://www.7-zip.org/download.html) is installed on the device and
+   the installation directory of 7-zip needs to be placed in the environment
+   variable.
diff --git a/infra/portable/make_portable_win.py b/infra/portable/make_portable_win.py
new file mode 100644
index 00000000..2eb409de
--- /dev/null
+++ b/infra/portable/make_portable_win.py
@@ -0,0 +1,100 @@
+# Copyright (c) 2024 Alex313031 and gz83.
+
+# This file is the equivalent of make_portable_win.py.
+
+
+import os
+import shutil
+import subprocess
+import sys
+import time
+import zipfile
+
+
+def fail(msg):
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    result = subprocess.run(command, shell=True)
+    if result.returncode != 0:
+        fail(f"Failed {command}")
+
+
+def display_help():
+    print("\nScript to make a portable Thorium .zip for Windows.\n")
+    print("\nPlease place the thorium_mini_installer.exe file in this directory before running.\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+
+def copy_installer():
+    cr_src_dir = os.getenv('CR_DIR', r'C:/src/chromium/src')
+    src_path = os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium', 'thorium_mini_installer.exe'))
+    dest_path = os.path.normpath(os.path.join(os.getcwd(), 'thorium_mini_installer.exe'))
+
+    if not os.path.exists(src_path):
+        fail(f"thorium_mini_installer.exe not found at {src_path}")
+
+    print(f"Copying thorium_mini_installer.exe from {src_path} to {dest_path}...\n")
+    shutil.copy(src_path, dest_path)
+
+
+def extract_and_copy_files():
+    # Extract and copy files
+    os.makedirs('./temp/USER_DATA', exist_ok=True)
+    try_run('7z x thorium_mini_installer.exe')
+    try_run('7z x chrome.7z')
+    shutil.move('Chrome-bin', './temp/BIN')
+    shutil.copy('./README.win', './temp/README.txt')
+    shutil.copy('./THORIUM.BAT', './temp/')
+    shutil.copy('./THORIUM_SHELL.BAT', './temp/')
+
+def zip_files():
+    # Create zip archive
+    with zipfile.ZipFile('thorium_portable.zip', 'w', zipfile.ZIP_DEFLATED) as zf:
+        for root, _, files in os.walk('./temp'):
+            for file in files:
+                file_path = os.path.join(root, file)
+                zf.write(file_path, os.path.relpath(file_path, './temp'))
+
+def clean_up():
+    # Cleanup extracted files
+    try:
+        os.remove('chrome.7z')
+        shutil.rmtree('temp')
+    except FileNotFoundError:
+        pass
+
+def main():
+
+    print("\nNOTE: You must place the thorium .exe file in this directory before running.")
+    print("   AND you must have 7-Zip installed and in your PATH.")
+    print("   Make sure to rename the .zip properly as per the release instructions.")
+    print("   AND make sure to edit the THORIUM_SHELL.BAT to match the version number of this release.\n")
+
+    copy_installer()
+
+    input("Press Enter to continue or Ctrl + C to abort.")
+
+    print("Extracting & Copying files from thorium .exe file...\n")
+    time.sleep(2)
+
+    extract_and_copy_files()
+
+    print("\nZipping up...\n")
+    zip_files()
+
+    print("\nCleaning up...\n")
+    time.sleep(2)
+
+    clean_up()
+
+    print("\nDone! Zip is at ./thorium_portable.zip")
+    print("Remember to rename it with the version before distributing it.\n")
+
+if __name__ == "__main__":
+    main()
diff --git a/win_scripts/README.md b/win_scripts/README.md
index 28d9d398..bc78ec19 100644
--- a/win_scripts/README.md
+++ b/win_scripts/README.md
@@ -2,8 +2,6 @@
 
 <img src="https://github.com/Alex313031/thorium/blob/main/logos/NEW/win/mini_installer/thorium_mini_installer_86.png">
 
-This directory contains batch files for building Thorium natively on Windows.
+This directory contains python files for building Thorium natively on Windows.
 
-The "bin" subdirectory contains useful "aliases" for cmd.exe. One can copy this folder somewhere or leave it where it is and then add it to your PATH.
-
-Also recommended is Clink > https://mridgers.github.io/clink/
+Before running the Python files in this directory, please strictly follow the instructions in [BUILDING_WIN](https://github.com/Alex313031/thorium/blob/main/docs/BUILDING_WIN.md).
diff --git a/win_scripts/build_win.py b/win_scripts/build_win.py
new file mode 100644
index 00000000..50fcd26a
--- /dev/null
+++ b/win_scripts/build_win.py
@@ -0,0 +1,48 @@
+# Copyright (c) 2024 Alex313031 and gz83.
+
+# This file is the equivalent of build_win.sh in the parent directory.
+
+import os
+import subprocess
+import sys
+
+# Error handling functions
+def fail(msg):
+    # Print error message and exit
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    if subprocess.call(command, shell=True) != 0:
+        fail(f"Failed {command}")
+
+
+# Help function
+def display_help():
+    print("\nScript to build Thorium for Windows.\n")
+    print("Usage: python win_scripts\build_win.py # (where # is number of jobs)\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+
+# Set chromium/src dir from Windows environment variable
+cr_src_dir = os.getenv('CR_DIR', r'C:/src/chromium/src')
+
+print("\nBuilding Thorium for Windows\n")
+
+# Change directory and run build commands
+os.chdir(cr_src_dir)
+# Determine the number of threads to use
+jobs = sys.argv[1] if len(sys.argv) > 1 else str(os.cpu_count())
+
+try_run(f'autoninja -C out/thorium thorium_all -j{jobs}')
+
+# Move the installer
+installer_src = os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium', 'mini_installer.exe'))
+installer_dest = os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium', 'thorium_mini_installer.exe'))
+os.rename(installer_src, installer_dest)
+
+print(f"Build Completed. Installer at '{installer_dest}'")
diff --git a/win_scripts/clean.py b/win_scripts/clean.py
new file mode 100644
index 00000000..b7ddc630
--- /dev/null
+++ b/win_scripts/clean.py
@@ -0,0 +1,64 @@
+# Copyright (c) 2024 Alex313031 and gz83.
+
+"""
+This file is the equivalent of clean.sh in the parent directory, but it directly
+deletes //out/thorium and unneeded PGO files.
+"""
+
+import os
+import shutil
+import sys
+import subprocess
+
+def fail(msg):
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    try:
+        subprocess.run(command, shell=True, check=True)
+    except subprocess.CalledProcessError:
+        fail(f"Failed {command}")
+
+
+def clean_files(directory):
+    for filename in os.listdir(directory):
+        file_path = os.path.join(directory, filename)
+        if os.path.isfile(file_path):
+            try:
+                os.remove(file_path)
+                print(f"Removed: {file_path}")
+            except Exception as e:
+                fail(f"Failed to remove {file_path}: {e}")
+
+
+def delete_directory(directory):
+    if os.path.exists(directory):
+        try:
+            shutil.rmtree(directory)
+            print(f"Removed directory: {directory}")
+        except Exception as e:
+            fail(f"Failed to remove directory {directory}: {e}")
+
+
+def display_help():
+    print("\nScript to remove unneeded artifacts\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+
+# Set chromium/src dir from Windows environment variable
+cr_src_dir = os.getenv('CR_DIR', r'C:/src/chromium/src')
+
+print("\nCleaning up unneeded artifacts\n")
+
+profiles_dir = os.path.normpath(os.path.join(cr_src_dir, "chrome", "build", "pgo_profiles"))
+clean_files(profiles_dir)
+
+thorium_dir = os.path.normpath(os.path.join(cr_src_dir, "out", "thorium"))
+delete_directory(thorium_dir)
+
+print("\nDone cleaning artifacts\n")
diff --git a/win_scripts/bin/c.bat b/win_scripts/old/bin/c.bat
similarity index 100%
rename from win_scripts/bin/c.bat
rename to win_scripts/old/bin/c.bat
diff --git a/win_scripts/bin/g.bat b/win_scripts/old/bin/g.bat
similarity index 100%
rename from win_scripts/bin/g.bat
rename to win_scripts/old/bin/g.bat
diff --git a/win_scripts/bin/gfetch.bat b/win_scripts/old/bin/gfetch.bat
similarity index 100%
rename from win_scripts/bin/gfetch.bat
rename to win_scripts/old/bin/gfetch.bat
diff --git a/win_scripts/bin/gsync.bat b/win_scripts/old/bin/gsync.bat
similarity index 100%
rename from win_scripts/bin/gsync.bat
rename to win_scripts/old/bin/gsync.bat
diff --git a/win_scripts/bin/nigw.bat b/win_scripts/old/bin/nigw.bat
similarity index 100%
rename from win_scripts/bin/nigw.bat
rename to win_scripts/old/bin/nigw.bat
diff --git a/win_scripts/bin/origin.bat b/win_scripts/old/bin/origin.bat
similarity index 100%
rename from win_scripts/bin/origin.bat
rename to win_scripts/old/bin/origin.bat
diff --git a/win_scripts/bin/pgow.bat b/win_scripts/old/bin/pgow.bat
similarity index 100%
rename from win_scripts/bin/pgow.bat
rename to win_scripts/old/bin/pgow.bat
diff --git a/win_scripts/bin/rebase.bat b/win_scripts/old/bin/rebase.bat
similarity index 100%
rename from win_scripts/bin/rebase.bat
rename to win_scripts/old/bin/rebase.bat
diff --git a/win_scripts/bin/runhooks.bat b/win_scripts/old/bin/runhooks.bat
similarity index 100%
rename from win_scripts/bin/runhooks.bat
rename to win_scripts/old/bin/runhooks.bat
diff --git a/win_scripts/build.bat b/win_scripts/old/build.bat
similarity index 100%
rename from win_scripts/build.bat
rename to win_scripts/old/build.bat
diff --git a/win_scripts/clean.bat b/win_scripts/old/clean.bat
similarity index 100%
rename from win_scripts/clean.bat
rename to win_scripts/old/clean.bat
diff --git a/win_scripts/make_zip.bat b/win_scripts/old/make_zip.bat
similarity index 100%
rename from win_scripts/make_zip.bat
rename to win_scripts/old/make_zip.bat
diff --git a/win_scripts/setup.bat b/win_scripts/old/setup.bat
similarity index 100%
rename from win_scripts/setup.bat
rename to win_scripts/old/setup.bat
diff --git a/win_scripts/trunk.bat b/win_scripts/old/trunk.bat
similarity index 100%
rename from win_scripts/trunk.bat
rename to win_scripts/old/trunk.bat
diff --git a/win_scripts/reset_depot_tools.py b/win_scripts/reset_depot_tools.py
new file mode 100644
index 00000000..2e15aa70
--- /dev/null
+++ b/win_scripts/reset_depot_tools.py
@@ -0,0 +1,88 @@
+# Copyright (c) 2024 Alex313031, midzer and gz83.
+
+"""
+This file is the equivalent of reset_depot_tools.py in the parent folder, but we
+do not need to deal with the .vpython_cipd_cache.
+This file may prompt "Access denied" and other prompts during the operation, but
+in fact it seems that the files we need to delete have been deleted.
+"""
+
+# TODO(gz83): Suppress false positives during operation?
+
+import os
+import shutil
+import subprocess
+import sys
+
+
+def fail(msg):
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    try:
+        subprocess.run(command, shell=True, check=True)
+    except subprocess.CalledProcessError:
+        fail(f"Failed {command}")
+
+
+def remove(item_path):
+    if os.path.exists(item_path):
+        if os.path.isdir(item_path):
+            try:
+                # Try to unlock and delete the directory
+                unlock_and_delete(item_path)
+                print(f"removed '{item_path}'")
+            except PermissionError as e:
+                print(f"Failed to remove '{item_path}': {e}")
+        else:
+            os.remove(item_path)
+            print(f"removed '{item_path}'")
+
+
+def unlock_and_delete(path):
+    """Attempts to unlock and delete a directory using cmd commands."""
+    if sys.platform == "win32":
+        # Use the Windows command line tools to unlock the directory
+        try:
+            # Use the command 'del' to delete all files recursively
+            subprocess.run(f'del /S /Q "{path}\\*"', shell=True, check=True)
+            # Use the command 'rmdir' to delete the directory
+            subprocess.run(f'rmdir /S /Q "{path}"', shell=True, check=True)
+        except subprocess.CalledProcessError as e:
+            print(f"Failed to unlock and delete directory '{path}' via CMD: {e}")
+            raise PermissionError(f"Failed to unlock and delete directory '{path}' via CMD: {e}")
+    else:
+        # For other platforms, just use shutil.rmtree
+        shutil.rmtree(path)
+
+
+def display_help():
+    print("\nScript to reset depot_tools on Windows.\n")
+    print("This will remove depot_tools, .gsutil, and .vpython-root")
+    print("from your disk, and then re-clone depot_tools.")
+    print("\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+
+depot_tools_dir = os.getenv('DEPOT_TOOLS_DIR', r"C:\src\depot_tools")
+gsutil_dir = os.path.expandvars(os.getenv('GSUTIL_DIR', r'%USERPROFILE%\.gsutil'))
+vpython_root_dir = os.path.expandvars(os.getenv('VPYTHON_ROOT_DIR', r'%LOCALAPPDATA%\.vpython-root'))
+
+print("\nRemoving depot_tools, etc\n")
+
+remove(depot_tools_dir)
+remove(gsutil_dir)
+remove(vpython_root_dir)
+
+print("\nRe-clone depot_tools\n")
+
+os.chdir(os.path.dirname(depot_tools_dir))
+try_run(f"git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git")
+
+print(f"\nCompleted. You can now use the depot_tools installed at: {depot_tools_dir}\n")
+print("\nYou can now run trunk.py\n")
diff --git a/win_scripts/setup.py b/win_scripts/setup.py
new file mode 100644
index 00000000..c52c7fd1
--- /dev/null
+++ b/win_scripts/setup.py
@@ -0,0 +1,386 @@
+# Copyright (c) 2024 Alex313031 and gz83.
+
+"""
+This file is the equivalent of setup.sh in the parent folder, but only for
+Windows builds.
+"""
+
+import os
+import shutil
+import subprocess
+import sys
+
+
+def fail(msg):
+    # Print error message and exit
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    # Execute a command and die on failure
+    try:
+        subprocess.run(command, shell=True, check=True)
+    except subprocess.CalledProcessError:
+        fail(f"Failed {command}")
+
+
+def copy(src, dst):
+    # Copy a file and print verbose output like cp -v
+    try:
+        print(f"Copying {src} to {dst}")
+        shutil.copy(src, dst)
+    except FileNotFoundError as e:
+        fail(f"File copy failed: {e}")
+
+
+def copy_directory(source_dir, destination_dir):
+    if not os.path.exists(destination_dir):
+        os.makedirs(destination_dir)
+        print(f"Created directory {destination_dir}")
+    for item in os.listdir(source_dir):
+        s = os.path.join(source_dir, item)
+        d = os.path.join(destination_dir, item)
+        if os.path.isdir(s):
+            print(f"Copying directory {s} to {d}")
+            shutil.copytree(s, d, dirs_exist_ok=True)
+        else:
+            copy(s, d)
+
+
+# --help
+def display_help():
+    print("\nScript to copy Thorium source files over the Chromium source tree\n")
+    print("\nThis should be done AFTER running this setup.py\n")
+    print("Use the --woa flag for Windows on ARM builds.")
+    print("Use the --avx512 flag for AVX-512 Builds.")
+    print("Use the --avx2 flag for AVX2 Builds.")
+    print("Use the --sse4 flag for SSE4.1 Builds.")
+    print("Use the --sse3 flag for SSE3 Builds.")
+    print("Use the --sse2 flag for 32-bit SSE2 Builds.")
+    print("\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+# Set chromium/src dir from Windows environment variable
+cr_src_dir = os.getenv('CR_DIR', r'C:/src/chromium/src')
+# Set Thorium dir from Windows environment variable
+thor_src_dir = os.path.expandvars(os.getenv('THOR_DIR', r'%USERPROFILE%/thorium'))
+
+
+print("\nCreating build output directory...\n")
+os.makedirs(f"{cr_src_dir}/out/thorium/", exist_ok=True)
+
+print("\nCopying Thorium source files over the Chromium tree\n")
+
+# Copy libjxl src
+copy_directory(
+  os.path.normpath(os.path.join(thor_src_dir, 'thorium-libjxl/src/')),
+  os.path.normpath(os.path.join(cr_src_dir))
+)
+
+# Copy src/BUILD.gn
+copy(
+    os.path.normpath(os.path.join(thor_src_dir, 'src', 'BUILD.gn')),
+    os.path.normpath(os.path.join(cr_src_dir))
+)
+
+# Copy Thorium sources
+thorium_sources = [
+    'src/ash',
+    'src/build',
+    'src/chrome',
+    'src/chromeos',
+    'src/components',
+    'src/content',
+    'src/extensions',
+    'src/google_apis',
+    'src/media',
+    'src/net',
+    'src/sandbox',
+    'src/services',
+    'src/third_party',
+    'src/tools',
+    'src/ui',
+    'src/v8'
+]
+
+for source in thorium_sources:
+    relative_path = source.replace('src/', '', 1)
+    copy_directory(
+        os.path.normpath(os.path.join(thor_src_dir, source)),
+        os.path.normpath(os.path.join(cr_src_dir, relative_path))
+    )
+
+copy_directory(
+    os.path.normpath(os.path.join(thor_src_dir, 'thorium_shell')),
+    os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+)
+copy(
+    os.path.normpath(os.path.join(thor_src_dir, 'pak_src', 'binaries', 'pak')),
+    os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+)
+copy_directory(
+    os.path.normpath(os.path.join(thor_src_dir, 'pak_src', 'binaries', 'pak-win')),
+    os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+)
+
+
+patches = [
+  'other/fix-policy-templates.patch',
+  'other/ftp-support-thorium.patch',
+  'other/thorium-2024-ui.patch',
+]
+for patch in patches:
+    relative_path = patch.replace('other/', '', 1)
+    os.path.normpath(os.path.join(cr_src_dir, os.path.dirname(relative_path)))
+    copy(
+      os.path.normpath(os.path.join(thor_src_dir, patch)),
+      os.path.normpath(os.path.join(cr_src_dir, relative_path))
+    )
+
+
+print( "\nPatching FFMPEG for HEVC\n")
+copy(
+    os.path.normpath(os.path.join(thor_src_dir, 'other', 'add-hevc-ffmpeg-decoder-parser.patch')),
+    os.path.normpath(os.path.join(cr_src_dir, 'third_party', 'ffmpeg'))
+)
+# Change directory to ffmpeg_dir and run commands
+ffmpeg_dir = os.path.join(cr_src_dir, 'third_party', 'ffmpeg')
+os.chdir(ffmpeg_dir)
+try_run(f'git apply --reject add-hevc-ffmpeg-decoder-parser.patch')
+
+
+print( "\nPatching policy templates\n")
+# Change directory to cr_src_dir and run commands
+os.chdir(cr_src_dir)
+try_run(f'git apply --reject fix-policy-templates.patch')
+
+
+print( "\nPatching FTP support\n")
+# Change directory to cr_src_dir and run commands
+os.chdir(cr_src_dir)
+try_run(f'git apply --reject ftp-support-thorium.patch')
+
+
+print( "\nPatching for Thorium 2024 UI\n")
+# Change directory to cr_src_dir and run commands
+os.chdir(cr_src_dir)
+try_run(f'git apply --reject thorium-2024-ui.patch')
+
+
+if '--woa' not in sys.argv:
+    print("\nPatching FFMPEG for AC3 & E-AC3\n")
+    copy(
+        os.path.normpath(os.path.join(thor_src_dir, 'other', 'ffmpeg_hevc_ac3.patch')),
+        os.path.normpath(os.path.join(cr_src_dir, 'third_party', 'ffmpeg'))
+    )
+    # Change directory to ffmpeg_dir and run commands
+    ffmpeg_dir = os.path.join(cr_src_dir, 'third_party', 'ffmpeg')
+    os.chdir(ffmpeg_dir)
+    try_run(f'git apply --reject ffmpeg_hevc_ac3.patch')
+else:
+    print("\nSkipping patching FFMPEG for AC3 & E-AC3 due to --woa option.\n")
+
+
+print("\nCopying other files to out/thorium\n")
+# Copying additional files
+os.makedirs(f"{cr_src_dir}/out/thorium/default_apps", exist_ok=True)
+copy_directory(
+    os.path.normpath(os.path.join(thor_src_dir, 'infra', 'default_apps')),
+    os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium', 'default_apps'))
+)
+copy(
+    os.path.normpath(os.path.join(thor_src_dir, 'infra', 'initial_preferences')),
+    os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+)
+copy(
+    os.path.normpath(os.path.join(thor_src_dir, 'infra', 'thor_ver')),
+    os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+)
+
+# Copy Windows on Arm files
+def copy_woa():
+    print("\nCopying Windows on Arm build files\n")
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'arm', 'build')),
+      os.path.normpath(os.path.join(cr_src_dir, 'build'))
+    )
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'arm', 'third_party')),
+      os.path.normpath(os.path.join(cr_src_dir, 'third_party'))
+    )
+    os.chdir(cr_src_dir)
+    print("\nDownloading PGO Profiles for Windows on Arm\n")
+    try_run(
+    'python3 tools/update_pgo_profiles.py --target=win-arm64 '
+    'update --gs-url-base=chromium-optimization-profiles/pgo_profiles'
+    )
+    print("\nDownloading PGO Profile for V8\n")
+    try_run(
+    'python3 v8/tools/builtins-pgo/download_profiles.py '
+    '--depot-tools=third_party/depot_tools --force download'
+    )
+
+
+if '--woa' in sys.argv:
+    copy_woa()
+
+
+# Copy AVX512 build files
+def copy_avx512():
+    print("\nCopying AVX-512 build files\n")
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'AVX512', 'build')),
+      os.path.normpath(os.path.join(cr_src_dir, 'build'))
+    )
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'AVX512', 'third_party')),
+      os.path.normpath(os.path.join(cr_src_dir, 'third_party'))
+    )
+    copy(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'AVX512', 'thor_ver')),
+      os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+    )
+    os.chdir(cr_src_dir)
+    print("\nDownloading PGO Profiles for Windows x64\n")
+    try_run(
+    'python3 tools/update_pgo_profiles.py --target=win64 '
+    'update --gs-url-base=chromium-optimization-profiles/pgo_profiles'
+    )
+    print("\nDownloading PGO Profile for V8\n")
+    try_run(
+    'python3 v8/tools/builtins-pgo/download_profiles.py '
+    '--depot-tools=third_party/depot_tools --force download'
+    )
+
+
+if '--avx512' in sys.argv:
+    copy_avx512()
+
+
+# Copy AVX2 build files
+def copy_avx2():
+    print("\nCopying AVX2 build files\n")
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'AVX2', 'build')),
+      os.path.normpath(os.path.join(cr_src_dir, 'build'))
+    )
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'AVX2', 'third_party')),
+      os.path.normpath(os.path.join(cr_src_dir, 'third_party'))
+    )
+    copy(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'AVX2', 'thor_ver')),
+      os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+    )
+    os.chdir(cr_src_dir)
+    print("\nDownloading PGO Profiles for Windows x64\n")
+    try_run(
+    'python3 tools/update_pgo_profiles.py --target=win64 '
+    'update --gs-url-base=chromium-optimization-profiles/pgo_profiles'
+    )
+    print("\nDownloading PGO Profile for V8\n")
+    try_run(
+    'python3 v8/tools/builtins-pgo/download_profiles.py '
+    '--depot-tools=third_party/depot_tools --force download'
+    )
+
+
+if '--avx2' in sys.argv:
+    copy_avx2()
+
+
+# Copy SSE4.1 build files
+def copy_sse4():
+    print("\nCopying SSE4.1 build files\n")
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'SSE4.1', 'build')),
+      os.path.normpath(os.path.join(cr_src_dir, 'build'))
+    )
+    copy(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'SSE4.1', 'thor_ver')),
+      os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+    )
+    os.chdir(cr_src_dir)
+    print("\nDownloading PGO Profiles for Windows x64\n")
+    try_run(
+    'python3 tools/update_pgo_profiles.py --target=win64 '
+    'update --gs-url-base=chromium-optimization-profiles/pgo_profiles'
+    )
+    print("\nDownloading PGO Profile for V8\n")
+    try_run(
+    'python3 v8/tools/builtins-pgo/download_profiles.py '
+    '--depot-tools=third_party/depot_tools --force download'
+    )
+
+
+if '--sse4' in sys.argv:
+    copy_sse4()
+
+
+# Copy SSE3 build files
+def copy_sse3():
+    print("\nCopying SSE3 build files\n")
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'SSE3', 'build')),
+      os.path.normpath(os.path.join(cr_src_dir, 'build'))
+    )
+    copy(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'SSE3', 'thor_ver')),
+      os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+    )
+    os.chdir(cr_src_dir)
+    print("\nDownloading PGO Profiles for Windows x64\n")
+    try_run(
+    'python3 tools/update_pgo_profiles.py --target=win64 '
+    'update --gs-url-base=chromium-optimization-profiles/pgo_profiles'
+    )
+    print("\nDownloading PGO Profiles for Windows x86\n")
+    try_run(
+    'python3 tools/update_pgo_profiles.py --target=win32 '
+    'update --gs-url-base=chromium-optimization-profiles/pgo_profiles'
+    )
+    print("\nDownloading PGO Profile for V8\n")
+    try_run(
+    'python3 v8/tools/builtins-pgo/download_profiles.py '
+    '--depot-tools=third_party/depot_tools --force download'
+    )
+
+
+if '--sse3' in sys.argv:
+    copy_sse3()
+
+
+# Copy SSE2 build files
+def copy_sse2():
+    print("\nCopying SSE2 build files\n")
+    copy_directory(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'SSE2', 'build')),
+      os.path.normpath(os.path.join(cr_src_dir, 'build'))
+    )
+    copy(
+      os.path.normpath(os.path.join(thor_src_dir, 'other', 'SSE2', 'thor_ver')),
+      os.path.normpath(os.path.join(cr_src_dir, 'out', 'thorium'))
+    )
+    os.chdir(cr_src_dir)
+    print("\nDownloading PGO Profiles for Windows x86\n")
+    try_run(
+    'python3 tools/update_pgo_profiles.py --target=win32 '
+    'update --gs-url-base=chromium-optimization-profiles/pgo_profiles'
+    )
+    print("\nDownloading PGO Profile for V8\n")
+    try_run(
+    'python3 v8/tools/builtins-pgo/download_profiles.py '
+    '--depot-tools=third_party/depot_tools --force download'
+    )
+
+
+if '--sse2' in sys.argv:
+    copy_sse2()
+
+
+print("\nDone!\n")
+print("\nEnjoy Thorium!\n")
diff --git a/win_scripts/tot.py b/win_scripts/tot.py
new file mode 100644
index 00000000..c9fc401d
--- /dev/null
+++ b/win_scripts/tot.py
@@ -0,0 +1,74 @@
+# Copyright (c) 2024 Alex313031 and gz83.
+
+"""
+This file is used to sync commits in Chromium's Tip-of-tree branch and does not
+contain any Thorium-specific files.
+"""
+
+
+import os
+import subprocess
+import sys
+
+
+# Error handling function
+def fail(msg):
+    # Print error message and exit
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    # Execute a command and die on failure
+    try:
+        subprocess.run(command, shell=True, check=True)
+    except subprocess.CalledProcessError:
+        fail(f"Failed {command}")
+
+
+# --help
+def display_help():
+    print(f"\nScript to Rebase/Sync Chromium repo to Tip of Tree.\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+
+# Set chromium/src dir from Windows environment variable
+cr_src_dir = os.getenv('CR_DIR', r'C:/src/chromium/src')
+
+
+def main():
+
+    print("\nScript to Rebase/Sync Chromium repo to Tip of Tree.\n")
+    print(
+        f"Rebasing/Syncing to `origin/main` and running hooks in {cr_src_dir}\n"
+    )
+
+    # Change directory to cr_src_dir and run commands
+    os.chdir(cr_src_dir)
+
+    # Commands to run
+    commands = [
+        'cd v8 && git restore . && git clean -ffd',
+        'cd third_party/devtools-frontend/src && git restore . && git clean -ffd',
+        'cd third_party/ffmpeg && git restore . && git clean -ffd',
+        'git checkout -f origin/main',
+        'git clean -ffd',
+        'git rebase-update',
+        'git fetch --tags',
+        'gclient sync --with_branch_heads --with_tags -f -R -D',
+        'git clean -ffd',
+        'gclient runhooks'
+    ]
+
+    # Run each command with error handling
+    for cmd in commands:
+        try_run(cmd)
+
+    print("\nDone!\n")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/win_scripts/trunk.py b/win_scripts/trunk.py
new file mode 100644
index 00000000..e863f1f0
--- /dev/null
+++ b/win_scripts/trunk.py
@@ -0,0 +1,85 @@
+# Copyright (c) 2024 Alex313031, midzer and gz83.
+
+"""
+This file is the equivalent of trunk.sh in the parent folder, but for native
+builds on Windows, we do not need to deal with the vs artifacts hash.
+"""
+
+import os
+import shutil
+import subprocess
+import sys
+
+
+def fail(msg):
+    # Print error message and exit
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    # Execute a command and exit on failure
+    try:
+        subprocess.run(command, shell=True, check=True)
+    except subprocess.CalledProcessError:
+        fail(f"Failed {command}")
+
+
+def safe_rmtree(path):
+    # Remove a directory if it exists
+    path = os.path.normpath(path)
+    if os.path.exists(path):
+        print(f"Removing: {path}")
+        shutil.rmtree(path)
+
+
+# --help
+def display_help():
+    print(f"\nScript to Rebase/Sync the Chromium repo.\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+
+# Set chromium/src dir from Windows environment variable
+cr_src_dir = os.getenv('CR_DIR', r'C:/src/chromium/src')
+# Thorium-specific directory that need to be deleted
+pak_dir = os.path.normpath(os.path.join(cr_src_dir, "third_party", "pak"))
+
+
+def main():
+
+    print("\nScript to Rebase/Sync the Chromium repo.\n")
+    print(f"Rebasing/Syncing and running hooks in {cr_src_dir}\n")
+
+    # Change directory to cr_src_dir and run commands
+    os.chdir(cr_src_dir)
+
+    # Remove Thorium-specific directory if it exists
+    safe_rmtree(pak_dir)
+
+    # Commands to run
+    commands = [
+        'cd v8 && git restore . && git clean -ffd',
+        'cd third_party/devtools-frontend/src && git restore . && git clean -ffd',
+        'cd third_party/ffmpeg && git restore . && git clean -ffd',
+        'git checkout -f origin/main',
+        'git clean -ffd',
+        'git clean -ffd',
+        'git rebase-update',
+        'git fetch --tags',
+        'gclient sync --with_branch_heads --with_tags -f -R -D',
+        'git clean -ffd',
+        'gclient runhooks'
+    ]
+
+    # Run each command with error handling
+    for cmd in commands:
+        try_run(cmd)
+
+    print("\nDone! You can now run version.py.\n")
+
+
+if __name__ == "__main__":
+    main()
diff --git a/win_scripts/upstream_version.py b/win_scripts/upstream_version.py
new file mode 100644
index 00000000..b88e0c94
--- /dev/null
+++ b/win_scripts/upstream_version.py
@@ -0,0 +1,70 @@
+# Copyright (c) 2024 Alex313031 and gz83.
+
+"""
+This file is the equivalent of upstream_version.sh in the parent folder, but for native
+builds on Windows, we do not need to deal with the vs artifacts hash and linux
+sysroot. At the same time, download only the PGO file for win64.
+"""
+
+import os
+import shutil
+import subprocess
+import sys
+
+
+def fail(msg):
+    # Print error message and exit
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    # Execute a command and die on failure
+    try:
+        subprocess.run(command, shell=True, check=True)
+    except subprocess.CalledProcessError:
+        fail(f"Failed {command}")
+
+
+# --help
+def display_help():
+    print(f"\nScript to check out Chromium tag of current Thorium version.\n")
+    print(f"\nNOTE: You may need to run trunk.py before using this script\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+
+# Set chromium/src dir from Windows environment variable
+cr_src_dir = os.getenv('CR_DIR', r'C:/src/chromium/src')
+
+
+# Set cr_ver
+cr_ver = "128.0.6613.194"
+
+
+print(f"\nCurrent Chromium version is: {cr_ver}\n")
+print(f"\nNOTE: Checking out tags/{cr_ver} in {cr_src_dir}\n")
+
+# Change directory to cr_src_dir and run commands
+os.chdir(cr_src_dir)
+
+try_run(f'git checkout -f tags/{cr_ver}')
+
+# Commands to run
+commands = [
+    'git clean -ffd',
+    'git clean -ffd',
+    'gclient sync --with_branch_heads --with_tags -f -R -D',
+    'gclient runhooks',
+]
+
+# Run each command with error handling
+for cmd in commands:
+    try_run(cmd)
+
+
+print(f"\nChromium tree is checked out at tag: {cr_ver}\n")
+
+print("\nDone!\n")
diff --git a/win_scripts/version.py b/win_scripts/version.py
new file mode 100644
index 00000000..29d38dde
--- /dev/null
+++ b/win_scripts/version.py
@@ -0,0 +1,94 @@
+# Copyright (c) 2024 Alex313031 and gz83.
+
+"""
+This file is the equivalent of version.sh in the parent folder, but for native
+builds on Windows, we do not need to deal with the vs artifacts hash and linux
+sysroot. At the same time, download only the PGO file for win64.
+"""
+
+import os
+import shutil
+import subprocess
+import sys
+
+
+def fail(msg):
+    # Print error message and exit
+    print(f"{sys.argv[0]}: {msg}", file=sys.stderr)
+    sys.exit(111)
+
+
+def try_run(command):
+    # Execute a command and die on failure
+    try:
+        subprocess.run(command, shell=True, check=True)
+    except subprocess.CalledProcessError:
+        fail(f"Failed {command}")
+
+
+def copy(src, dst):
+    # Copy a file and print verbose output like cp -v
+    try:
+        print(f"Copying {src} to {dst}")
+        shutil.copy(src, dst)
+    except FileNotFoundError as e:
+        fail(f"File copy failed: {e}")
+
+
+# --help
+def display_help():
+    print(f"\nScript to check out Chromium tag of current Thorium version.\n")
+    print(f"\nNOTE: You may need to run trunk.py before using this script\n")
+
+if '--help' in sys.argv:
+    display_help()
+    sys.exit(0)
+
+
+# Set chromium/src dir from Windows environment variable
+cr_src_dir = os.getenv('CR_DIR', r'C:/src/chromium/src')
+# Set Thorium dir from Windows environment variable
+thor_src_dir = os.path.expandvars(os.getenv('THOR_DIR', r'%USERPROFILE%/thorium'))
+
+
+# Set thor_ver
+thor_ver = "128.0.6613.194"
+
+
+print(f"\nCurrent Thorium version is: {thor_ver}\n")
+print(f"\nNOTE: Checking out tags/{thor_ver} in {cr_src_dir}\n")
+
+# Change directory to cr_src_dir and run commands
+os.chdir(cr_src_dir)
+
+try_run(f'git checkout -f tags/{thor_ver}')
+
+# Copy files using shutil
+copy(
+    os.path.normpath(os.path.join(thor_src_dir, 'thorium-libjxl/src/DEPS')),
+    os.path.normpath(os.path.join(cr_src_dir, 'DEPS'))
+)
+copy(
+    os.path.normpath(os.path.join(thor_src_dir, 'thorium-libjxl/src/.gitmodules')),
+    os.path.normpath(os.path.join(cr_src_dir, '.gitmodules'))
+)
+copy(
+    os.path.normpath(os.path.join(thor_src_dir, 'thorium-libjxl/src/third_party/.gitignore')),
+    os.path.normpath(os.path.join(cr_src_dir, 'third_party/.gitignore'))
+)
+
+# Commands to run
+commands = [
+    'git clean -ffd',
+    'git clean -ffd',
+    'gclient sync --with_branch_heads --with_tags -f -R -D',
+    'gclient runhooks',
+]
+
+# Run each command with error handling
+for cmd in commands:
+    try_run(cmd)
+
+print(f"\nChromium tree is checked out at tag: {thor_ver}\n")
+
+print("\nDone! You can now run setup.py\n")