Tilder — On-Device AI Assistant

About

Tilder is a Chrome extension that answers questions about whatever page you're reading, summarizes articles and YouTube videos, and searches the web when it needs to — powered by AI that runs right on your device.
By default, Tilder answers using Chrome's built-in Gemini Nano model — nothing you ask has to leave your browser. Want deeper reasoning? Download Google's Gemma 4 model once, right from the side panel, for noticeably smarter answers, still fully on-device.
If the page doesn't have your answer, Tilder checks the web and shows exactly where each fact came from — it never guesses quietly.
Features:
- Ask anything about the page you're viewing
- One-click page summaries
- YouTube video summaries, built from the actual transcript
- Google Docs support
- Optional free upgrade to a stronger on-device model (Gemma 4)
- Web search fallback with cited sources, only when the page and the model's own knowledge fall short

Tilder is free, requires no account, and needs no API key.