Definio Browser Copilot Chrome Extension
Definio AI lets you chat with multiple language models directly in your browser, but works only on web content and not PDFs.
At a glance
Starts at
Free
No paid plan found on the Chrome Web Store, September 2026.
Free tier
Yes
Platforms
Web
Best for
Researchers, writers, students
4.9 out of 5
Scored by a Toolio reviewer after real useOur verdict
Helps explore, reason, and research faster. Great for comparing insights from different AI models. Avoid if working heavily with PDFs or needing deep integrations.
✓What it does well
Multiple ModelsAccess all major LLM models in one sidebar.
Browser IntegrationStay focused on your browsing without opening new tabs or windows.
Custom ShortcutsUse customizable keyboard shortcuts for quick access and commands.
✕Where it falls short
PDF SupportDoes not work with PDF files viewed in the browser, only web content.
Limited ContextChat is based on text selections within a single page at a time.
Extension LimitationsCannot be embedded into webpage content or injected scripts.
Key features
Multi-Modal AIRuns every LLM model from one sidebar.
Real-time AssistanceAdapt to your browsing context for precise, real-time help.
Vision CapabilitiesCapture and analyze screenshots of web pages or images.
Multi-page Analysiscombine text from multiple pages for context