Krux
March 19, 2026
Google's Stitch Now Turns Sketches Into Working Prototypes
Published: March 19, 2026 at 12:40 AM
Updated: March 19, 2026 at 12:40 AM
100-word summary
Google Labs updated Stitch with Gemini 3 and a Prototypes feature that stitches individual screens into clickable flows. Type a description or upload a wireframe sketch, and Stitch generates UI variations you can immediately link together. The new feature lets you design interactions and complete user flows inside the tool, then export front-end code or paste into Figma. Translation: a product manager can sketch an idea on paper in the morning and share a working prototype with developers by lunch. Google flags the feature as experimental with ongoing improvements coming. The gap between napkin sketch and testable interface just collapsed.
What happened
Google Labs updated Stitch with Gemini 3 and a Prototypes feature that stitches individual screens into clickable flows. Type a description or upload a wireframe sketch, and Stitch generates UI variations you can immediately link together. The new feature lets you design interactions and complete user flows inside the tool, then export front-end code or paste into Figma. Translation: a product manager can sketch an idea on paper in the morning and share a working prototype with developers by lunch. Google flags the feature as experimental with ongoing improvements coming.
Why it matters
The gap between napkin sketch and testable interface just collapsed.