This is a userscript, you can install it with the Tampermonkey browser extension.
Features:
- Fill blank album slots with images of what is missing
- Show name, rarity and description of missing stamps
- Links to searches (Wizard, TP, Auction) and Jellyneo
- Compare your album progress with another user
Credits:
Modelled after the userscript Stamp album helper by u/Eat_Wooloo_As_Mutton which was made for retail neo.