Product Custom Fields

Product Custom Fields allow you to add custom attributes to products beyond the default fields included in Spree. Whether you want to display additional product specifications on the storefront, store internal merchandising notes, or support advanced integrations, custom fields give you complete flexibility directly from the admin dashboard. Unlike legacy product properties, custom fields are structured, scalable, and work seamlessly with imports, APIs, and storefront display settings.

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Why Use Product Custom Fields?

Product custom fields are ideal when you need to:

• Add technical specifications (e.g., voltage, dimensions, fabric composition)
• Display care instructions
• Highlight sustainability certifications
• Store supplier or internal notes
• Add regulatory information
• Include SEO enhancements
• Attach structured product data
• Power custom storefront sections
• Support third-party integrations

Because custom fields can be created and managed entirely from the dashboard, they reduce development time and eliminate the need for database changes or code deployments.

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How to Create a Product Custom Field

To create a new product custom field, navigate to Settings → Custom Field Definitions. Click New Custom Field Definition to open the custom field creation form. Complete the form fields as described below.

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Custom Field Definition Fields

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Name

The display name shown in the admin panel and (optionally) on the storefront.
Example:

• Material
• Care Instructions
• Sustainability Rating

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Namespace

Used to group custom fields and avoid naming conflicts.

• We recommend using something like custom for merchant-defined product fields.
• Avoid using reserved model names like product, variant, or order.

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Key

The unique identifier for the custom field (combined with the namespace). Example:

• custom.material
• custom.care_instructions
• custom.sustainability_score

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Resource

For product custom fields, select Product. To learn more about creating custom fields for other resources, see Custom Fields.

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Choosing the Right Data Type

Each custom field must have a type. Selecting the appropriate type ensures your data is structured correctly.

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Short Text

Single-line text values. Examples:

• “Denim”
• “Made in Italy”
• “BPA Free”

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Long Text

Multi-line text without formatting. Examples:

• Care instructions
• Ingredient lists
• Warranty information

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Rich Text

Formatted content with styling options. Examples:

• Marketing descriptions
• Detailed sustainability breakdowns
• Compliance disclaimers

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Number

Numeric values. Examples:

• 4.8 (average rating)
• 32 (waist size)
• 750 (capacity in ml)

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Boolean

True/false values. Examples:

• Is this product eco-friendly?
• Is this item fragile?
• Limited edition?

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JSON

Structured data or multiple related values. Examples:

• Technical specifications object
• Nutritional breakdown
• Multi-attribute certification data

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Display Settings

Choose where the custom field should appear:

• Admin Only - Internal use (e.g., supplier notes, internal margin classification)
• Admin & Storefront - Visible to customers on product pages

If displayed on the storefront, custom fields can be used within your theme to enhance the Product Detail Page (PDP).

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Adding Product Custom Field Values

Once the definition is created, you can assign values to individual products.

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Adding Values Individually

To add custom field values for individual products:

1. Navigate to Products
2. Open the product you want to update
3. Click the three-dot menu in the top-right corner
4. Select Custom Fields to open the custom fields form
5. Enter the desired values
6. Click Save

This method is ideal for updating a small number of products.

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Updating Product Custom Fields in Bulk

You can also import custom fields via CSV.

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Step 1: Add a Column to the product CSV file

Use this format: custom_field.namespace.key Example:

• custom_field.custom.material
• custom_field.custom.care_instructions
• custom_field.custom.sustainability_score

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Step 2: Add Values Per Product Row

Fill in the values for each product.

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Step 3: Import the File

• Upload during a new product import or
• Export your existing catalog, update it, and reimport with the newly added columns to apply changes

This is especially useful when enriching large product catalogs. Please refer to the following support articles for more information about product imports:

• Import Product
• Product Import Template

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Real-World Product Custom Field Examples

Here are some practical examples of how merchants use product custom fields:

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Apparel

• Material: “100% Organic Cotton”
• Care Instructions: “Machine wash cold, tumble dry low”
• Fit Type: “Slim Fit”
• Fabric Weight (gsm): 180

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Electronics

• Battery Life: 12 (hours)
• Warranty Period: 24 (months)
• Waterproof: true
• Voltage: 110–240V

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Food & Supplements

• Allergens: “Contains nuts”
• Ingredients: Long text field
• Nutritional Info: JSON structure
• Expiration Period: 18 (months)

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Furniture

• Assembly Required: true
• Weight Capacity: 250 (lbs)
• Material Finish: “Matte Walnut”
• Care Instructions: Rich text

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B2B Use Cases

• Internal Margin Tier (Admin Only)
• Supplier SKU
• Minimum Order Quantity
• Packaging Type
• Compliance Classification

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Replacing Product Properties

Product Properties are no longer supported in the latest version of Spree. Product Custom Fields provide a more flexible, scalable, and structured solution for managing custom product attributes. If you previously relied on properties for product enrichment, custom fields are now the recommended approach. Product custom fields give you the flexibility to tailor your product data model to your business - without relying on developers - while keeping your catalog structured, scalable, and integration-ready.