@r1s2g3 ! Hi!
On Splinterlands.com you can go to your cards (or the market), click on a card, then go to the LORE tab. This has the large file images of each character. Then right click the image to open in a new tab. You can either download (save as) or grab the link. You can also download (save) the image directly from the LORE page by right-clicking and selecting download. 🥰