Riko Chrome Companion

A chrome companion that lives in your browser — drag her around, chat with her, and she'll talk back

Meet Riko — an adorable anime companion who lives in your browser! Riko is a cute, draggable character that appears on every webpage you visit. She greets you with randomized messages, reacts when you hover over her, and even chats with you powered by your favorite LLM provider. FEATURES: - Drag Riko anywhere on the page — she remembers her position across all sites - Click her to open a retro-styled chat panel - Chat responses type out with a typewriter effect while Riko's speaking animation plays - Speech bubbles with animated greetings on every new page - 7 expressive sprites: neutral, idle, happy, blush, angry, and 2 speaking frames - Summarize any webpage with the /summarize command - Fully isolated via Shadow DOM — never interferes with your websites - SPA resilient — she stays even when pages dynamically update CHAT COMMANDS: - /summarize — Get a quick summary of the current page - /set-emotion — Change Riko's expression - /clear — Reset conversation history - /settings — Open extension settings - /help — List all commands SUPPORTED LLM PROVIDERS: Bring your own API key and choose from: - OpenAI (GPT-5, GPT-4o, GPT-4.1) - Anthropic (Claude Sonnet 4, Claude Haiku 4) - Google Gemini (Gemini 3, Gemini 3.1) Configure your provider, model, and even customize Riko's personality through the system prompt in settings. No data collection. No tracking. Your API key and settings stay local on your device. See our privacy policy for details. Feel free to check out the repo https://github.com/satasuk03/riko-chrome-companion