Steps to run

brew install go
go run github.com/playwright-community/playwright-go/cmd/playwright install --with-deps
go run .

OR
brew install go
go run github.com/playwright-community/playwright-go/cmd/playwright install --with-deps
go build .
./Go-playwright

If you are really feeling adventurous you can use the following command to flip the image naming convention so sizes come first, domains second.
./Go-playwright -flip true

See the "out" folder for your screenshots.
Modify the urls.txt file to add your urls.
Modify the sizes.json to add custom sizes.