Content and typography blocks.

core/paragraph

Basic text content block.

Attributes:

• content (rich-text) — Paragraph text
• dropCap (boolean) — Enable drop cap
• placeholder (string) — Placeholder text
• direction (string) — Text direction (ltr/rtl)

Supports: align, anchor, className, color, spacing, typography, splitting, __unstableOnSplit

core/heading

Section heading (h1-h6).

Attributes:

• content (rich-text) — Heading text
• level (integer) — Heading level 1-6 (default: 2)
• textAlign (string) — Text alignment
• placeholder (string) — Placeholder text

Supports: align, anchor, className, color, spacing, typography, splitting

core/list

Ordered or unordered list.

Attributes:

• ordered (boolean) — Use ordered list
• values (string) — Deprecated: list HTML
• type (string) — List type (1, A, a, I, i)
• start (integer) — Starting number
• reversed (boolean) — Reverse order
• placeholder (string) — Placeholder

Supports: anchor, className, typography, color, spacing, splitting

core/list-item

Individual list item inside core/list.

Attributes:

• content (rich-text) — Item content
• placeholder (string) — Placeholder

Supports: className, splitting, typography

core/quote

Block quote with citation.

Attributes:

• value (string) — Deprecated
• citation (rich-text) — Citation text
• textAlign (string) — Text alignment

Supports: anchor, className, color, spacing, typography, layout

Styles: default, plain

core/pullquote

Emphasized pull quote.

Attributes:

• value (string) — Quote text
• citation (rich-text) — Citation
• textAlign (string) — Alignment

Supports: anchor, align, color, spacing, typography, background, dimensions

core/code

Preformatted code block.

Attributes:

• content (rich-text) — Code content

Supports: anchor, className, color, spacing, typography

core/preformatted

Preformatted text preserving whitespace.

Attributes:

• content (rich-text) — Text content

Supports: anchor, className, color, spacing, typography

core/verse

Poetry or verse with preserved formatting.

Attributes:

• content (rich-text) — Verse content
• textAlign (string) — Text alignment

Supports: anchor, className, color, spacing, typography

core/table

Data table.

Attributes:

• hasFixedLayout (boolean) — Fixed width columns
• caption (rich-text) — Table caption
• head (array) — Header rows
• body (array) — Body rows
• foot (array) — Footer rows

Supports: anchor, align, className, color, spacing, typography

Styles: regular, stripes

core/details

Collapsible content section.

Attributes:

• showContent (boolean) — Default open state
• summary (rich-text) — Summary text

Supports: align, className, color, spacing, typography, layout

core/footnotes

Post footnotes (auto-generated).

Attributes: None (pulls from post meta)

Supports: className, color, spacing, typography

core/freeform

Classic Editor block (TinyMCE).

Attributes:

• content (string) — HTML content

Supports: className, customClassName: false, reusable: false

core/missing

Placeholder for unrecognized blocks.

Attributes:

• originalName (string) — Original block name
• originalUndelimitedContent (string) — Original content
• originalContent (string) — Original HTML

Supports: className, customClassName: false, inserter: false, html: false, reusable: false