PixelCat от Pistachios

PixelCat adds a playful pixel-art pet companion to supported websites, currently YouTube and Google.

Choose between a cat and a fox, interact with them, feed them fish, play with balls, collect coins, complete daily quests, unlock skins, use companion mode, and watch them react to the page around them.

The add-on includes XP progression, levels, shop items, Google-related quests, bubble events, portals, spiders, right-click pet options, and small fun reactions while you browse.

PixelCat runs entirely locally in your browser. It does not use external servers, analytics, tracking, or data collection. Your XP, coins, settings, quests, pets, and unlocks are saved locally using browser storage.

More supported websites may be added over time.