Developers Build AI Tool That Turns Your Photo Into a 2026 World Cup Sticker

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A development team has created Sticker Studio, an experimental app that uses Google's Nano Banana image model to transform user photos into cartoon-style football stickers themed around the 2026 FIFA World Cup. Users upload a photo, select a national team, and enter a name, after which the app generates a personalized illustrated sticker complete with official kit, pose, and rarity effects. The project was driven by a desire to recreate the nostalgia of physical sticker albums with a personal touch, ensuring each result remains recognizable while adopting a playful, non-photorealistic style. The application runs on an Astro frontend hosted on Firebase, with a Cloud Run backend that assembles structured prompts in TypeScript before calling the Gemini image-generation API. The team later upgraded from Nano Banana 1 to Nano Banana 2 to improve consistency across stickers generated for different users.

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