Overview

• Firefox 139.0 introduces an experimental ‘Link Previews’ feature that generates pop-up summaries when users hover over links.
• The AI-powered previews rely on Hugging Face’s SmolLM2-360M on-device model to extract key points in Reader View for privacy protection.
• Users must activate the feature in Firefox Labs settings and press Alt+Shift while hovering to view the summaries.
• The feature is unavailable in France and may affect website traffic, raising concerns among publishers over potential revenue loss.
• Mozilla joins Chrome, Edge and Safari in integrating AI tools into browsers, marking a broader shift toward in-browser AI capabilities.