To download a Blogspot blog, you need to follow the given instructions below:-
Visit your blogspot homepage using the credentials provided by google and click on ‘More options’ for the blog you want to download. Now click on ‘settings’ and click ‘other’ from the menu. Now click on ‘Export blog’. Now, click on ‘Download blog’ and it will open in a pop-up window. Click on ‘save file’ and then ‘ok’ to download it on the computer.