About this plugin
MarkupLoom provides a focused interface for adding structured data to individual WordPress content items.
Multiple schemas can be assigned to the same Page, Post, or WooCommerce Product. Enabled individual schemas are combined into a JSON-LD @graph.
The plugin also provides a global schema manager for site-wide rules.
Features
- Multiple schemas per Page, Post, and WooCommerce Product.
- Checkbox-based Post Type selection for global schemas.
- Individual schema controls inside the WordPress editor.
- JSON-LD @graph output for multiple individual schemas.
- Product schema support for WooCommerce.
- Custom JSON-LD support.
- Dynamic placeholders for common WordPress values.
- Global schema rules for the entire site, homepage, singular content, or selected post types.
- Schema type allow-list.
- Nonce and capability checks.
- Safe JSON-LD encoding to prevent script-tag breakout.
Supported Schema Types
Pages:
- WebPage
- AboutPage
- ContactPage
- FAQPage
- LocalBusiness
- BreadcrumbList
- Organization
- Custom
Posts:
- Article
- BlogPosting
- NewsArticle
- FAQPage
- HowTo
- BreadcrumbList
- WebPage
- Organization
- Custom
Products:
- Product
- BreadcrumbList
- FAQPage
- WebPage
- Organization
- Custom
Custom JSON-LD
Custom JSON-LD must be valid JSON.
Supported placeholders:
- {{title}}
- {{url}}
- {{description}}
- {{image}}
- {{author}}
- {{datePublished}}
- {{dateModified}}
Example:
{
org”,
“@type”: “WebPage”,
“name”: {{title}},
“url”: {{url}},
“description”: {{description}}
}
Quoted full-value placeholders are also supported.
Multiple Schemas
A single content item may contain multiple schemas, such as:
- Product
- BreadcrumbList
- FAQPage
Enabled individual schemas are emitted together in a JSON-LD @graph.
WooCommerce
When WooCommerce is active, Product schema can use:
- Product name
- Description
- URL
- SKU
- Product image
- Price
- Currency
- Stock availability
- Brand
- GTIN
- MPN
Security
MarkupLoom validates custom JSON before storing it and re-encodes schema data with wp_json_encode() and JSON hexadecimal encoding flags before placing it inside a JSON-LD script element.
Administrator-only configuration is protected by WordPress capability and nonce checks.
Compatibility
- WordPress 6.4 or later.
- PHP 7.4 or later.
- WooCommerce is optional.