Pixel-Perfect UI with Playwright and Figma MCP: What Actually Works in 2026
I asked an AI coding assistant to implement a page layout from a Figma design. It got the heading size wrong (28px instead of 24px), inserted a 4px gap where there should have been 8px, and hallucinated a duplicate magnifying glass icon inside the search bar. The overall structure was fine. The details were not.
This is the state of AI-assisted design-to-code in 2026. The tools get you 65-80% of the way there, then leave you in a no-man's land where the remaining pixels matter more than all the ones that came before. Every frontend engineer who has shipped production UI knows: "close enough" is not close enough.
I spent a session trying to close that gap using the toolchain everyone is talking about -- Figma MCP for design context, headless Playwright for runtime measurement, and an AI assistant for the correction loop. Here is what happened, what broke, and what produced results.