Targeted UI editing without breaking the whole page

How scoped edits, last-known-good snapshots, and preview diagnostics make AI UI refinement safer.

Try this workflow in U2C

Change only the selected primary action button to use a 12px radius, cyan glass background, and a 1px translucent border. Preserve every other element exactly.

Start from this prompt

Why follow-up edits often break AI-generated UI

Many AI builders treat each follow-up as a broad regeneration. That works for early exploration, but it is risky when a user wants to adjust one element on an otherwise good screen.

A safer system needs the current page, the selected element, and a recovery path if the model returns invalid code.

How U2C handles scoped changes

When you select an element in the preview, U2C sends that element as the edit target. The server attempts a surgical replacement, and the preview only updates when the result is complete enough to render.

If a refinement fails, the preview can recover to the last working version instead of leaving a blank pane.

Good targeted-edit requests

Ask for one precise change at a time: button style, card spacing, table density, sidebar width, modal copy, or chart color.

Avoid mixing unrelated requests such as changing copy, layout, color system, navigation, and export behavior in one edit.

FAQ

Can targeted edits still fail?+

Yes, but they should fail visibly and recoverably. U2C adds diagnostics and last-working-version recovery to reduce lost work.

What is the best first edit after generation?+

Fix structural mismatches first, then polish spacing, typography, colors, and microcopy.

Related guides

How to turn a screenshot into editable React UI

A practical workflow for converting product screenshots into editable UI with U2C, then refining the result safely.

Why preview recovery is essential for AI UI builders

How preview diagnostics, HTML repair, and last-working-version recovery improve trust during AI UI generation.