I've been trying to find the latest pixel image on this webpage. But I don't know which release is the latest pixel image. Can someone tell me which one is the one?
I have no internet connection on my pi so I cannot run
sudo apt-get updateand
sudo apt-get dist upgrade.
That web page is looking at the versions of Raspbian. Pixel is a desktop environment. Recently Raspbian Stretch was released and can be seen on the page you referenced by the latest folder date (2017-09-08). So you would be able to get Pixel (the desktop environment for Raspberry Pi) on Stretch or on later versions of Jessie.
According to the Raspberry Pi web site, all you need to do yo update the version of Pixel is run the following commands:
sudo apt-get update sudo apt-get dist-upgrade sudo reboot
And you will get the latest version of Pixel. You don't download it separately from Raspbian (Stretch, Jessie or otherwise)
More on this can be found on the Wikipedia entry for Raspbian.
Since the question has been edited to clarify that the Pi has no internet connection, I will edit this answer. To install components offline you need to find the .deb and transfer it to
on the Pi, and run
sudo dpkg -i /var/cache/apt/archives/partial/***
where *** is the name of the deb file, as mentioned in this answer
Since there are thousands of deb packages, you'll have to find the required ones for pixel in some of these lists: