The download links from https://puppylinux.com/index.html#download doesn't work for fossa, bionic, tahr etc (works for raspbian, slacko 7).
Chrome 95 error (showed in console):
index.html#download:1 Mixed Content: The site at 'https://puppylinux.com/' was loaded over a secure connection, but the file at 'http://ftp.nluug.nl/ftp/pub/os/Linux/di ... 64-9.5.iso' was loaded over an insecure connection. This file should be served over HTTPS. This download has been blocked. See https://blog.chromium.org/2020/02/prote ... ecure.html for more details.
It could easily be bypassed, but for a newcomer is quite off-putting.