To download a high resolution image, first click on the image.
A high resolution version will open.
For PC users, right-click on the image and select ‘Save Image As’.
For Mac users, either right-click on the image if you have a mouse with a right-click button, or hold the ‘Control’ key and click the image if you’re using a single button mouse or trackpad. Select ‘Save Image As…’ from the context menu that appears. If you’re using a trackpad, you can also bring up the context menu by clicking the image with two fingers.
Then, choose your preferred location and save the image.