/html-to-generateblocks

HTML/CSS to GenerateBlocks

Convert supplied HTML/CSS into editable native blocks while preserving content, semantics, responsive behavior, and interactions.

Use GenerateBlocks (including Pro) and core blocks only. Keep CSS in native block styles and interactions in native blocks. Do not add Scripts Manager, Page Block, Custom HTML/CSS/JS, or another builder without an explicit request.

Shared contract

Use the companion generateblocks-layouts skill's references/authoring-contract.md before emitting markup, and its references/_index.md to select task-specific guides. With installed skills it is the sibling ../generateblocks-layouts/; a standalone bundle carries the same dependency under references/generateblocks-layouts/. Do not read both copies or the entire library.

Local block styles are the default. Prompt once about shared Global Styles and Design Tokens unless the user already chose. Create/import shared records or add new shared dependencies only after explicit opt-in; preserve existing references. The companion contract owns the exact scope and prompt. Use the real post ID when available, otherwise one random four-digit scope for the layout.

Conversion workflow

1. Inventory the source DOM, CSS, links, media, and runtime behavior.
2. Remove wrappers only when they own no semantics, layout, or behavior.
3. Map declarations and states into local styles, then compile matching css. For uncertain mappings, read the relevant conversion pattern.
4. Generate {section}-converted.html; validate against the source and the shared authoring contract. Report any interaction that could not be preserved.

The companion contract contains the familiar static Element/Text path. Load this conversion reference only when the source mapping requires it. New visual decisions additionally require design-quality.md. Dynamic data requires dynamic-tags.md plus the relevant query/field guide; interactive Pro blocks require their native schemas/save output.

Delivery

Write blocks to files, not chat. Use the companion serializer helpers and run preflight.py FILE --id-scope SCOPE. Confirm unfamiliar output in the actual editor and compare visible content and behavior; static preflight is not sufficient. A live write also requires mcp-publishing.md, a snapshot, and raw-content readback. A conversion request by itself does not authorize publication.

Keep serialization, class-order, link, CSS-state, and breakpoint rules in the companion contract rather than duplicating them here. Examples are not current brand defaults or import-ready markup for a different post.