The Windows Flutter SDK v3.7.12-stable.zip is 873MB. Here are the top 100 largest compressed items:
file: compressed file size
flutter/.pub-preload-cache/flutter_gallery_assets-1.0.2.tar.gz: 82.5MB
flutter/.git/objects/pack/pack-c596e5cc21ec5194eeaf69bf7115fb05e1a47638.pack: 69.8MB
flutter/bin/cache/artifacts/engine/windows-x64/flutter_windows.dll.pdb: 50.7MB
flutter/bin/cache/artifacts/engine/windows-x64-profile/flutter_windows.dll.pdb: 46.6MB