Some educational and promotional versions are available for viewing, such as a 7-page preview of Supa Strika.
The single best alternative to a PDF is the official . Available on both iOS and Android, this app allows you to download individual issues or entire collections directly to your device.
While the search term is popular, the smartest move is to support the creators. The official Supa Strikas app costs less than a cup of coffee per issue, and it guarantees that Shakes and the gang will keep producing new adventures.