Channel-Specific Guides
Each marketplace has unique requirements, strengths, and best practices. This guide covers the major channels Merchkit supports, with specific tips and strategies for each.
Wayfair
Category: Traditional marketplace (furniture and home goods)
Key Stats:
- Extensive channel-specific attributes across many categories
- Category-specific attribute sets
- Strict validation and data quality requirements
Wayfair Requirements
Wayfair enforces strict formatting and content standards:
- Packaging dimensions — Exact Carton Width, Carton Height, Carton Depth, Carton Weight (required for all products)
- Material composition — List all materials with percentages (required)
- Assembly information — Assembly required (yes/no) and assembly time in minutes
- Care instructions — Detailed maintenance and cleaning guidance
- Product categories — Must match Wayfair's exact category taxonomy
Wayfair Best Practices
- Use category views — Generate attributes per category to ensure category-specific fields are filled
- Focus on packaging — Wayfair's packaging attributes are critical; ensure your product data includes carton dimensions
- Material precision — Break down complex materials (e.g., "Upholstery: 100% Polyester, Frame: Hardwood") rather than generic descriptions
- Assembly realism — Provide honest assembly times and clear instructions
- Image quality — Wayfair requires multiple high-quality images; use Merchkit's image enrichment before generating
- Validate category mapping — Confirm your products are assigned to correct Wayfair categories before generating
Wayfair Channel-Specific Attributes to Prioritize
- Carton Width 1, Carton Height 1, Carton Depth 1, Carton Weight 1
- Assembly Required, Assembly Time Minutes
- Care Instructions
- Material Composition
- Warranty
- Color, Size (if applicable)
[SCREENSHOT: Wayfair channel grid with category selector and key attributes]
Amazon
Category: E-commerce marketplace (universal retail)
Key Stats:
- Extensive bullet points and description fields
- A+ Content (enhanced content) for brand-registered sellers
- Multiple image requirements
- Category-specific attributes
Amazon Requirements
Amazon emphasizes product clarity and compelling content:
- Title — 200 characters max, keywords-focused but readable
- Bullet points — 5 key features/benefits, 1-2 sentences each
- Description — Detailed product overview
- Images — Main image, plus 6-8 additional angles/lifestyle images
- A+ Content — Enhanced content with brand messaging (if brand-registered)
- Technical specifications — Exact dimensions, weight, materials
- Warnings/Compliance — Safety warnings, age requirements, etc.
Amazon Best Practices
- Keyword research first — Use Amazon's search bar to identify high-volume keywords for your category
- Front-load titles — Put key keywords in the first 50 characters (most visible on mobile)
- Bullet point specificity — Focus on what makes your product different, not generic features
- Image optimization — Use lifestyle images showing the product in use, not just flat lays
- A+ Content for premium positioning — If you're brand-registered, invest in A+ modules for higher conversion
- Review variation attributes — Amazon users often search by color, size, material—ensure these are filled correctly
Amazon Channel-Specific Attributes to Prioritize
- Title (with keywords)
- Bullet Points (5 persuasive bullets)
- Product Description
- Main Image Link
- Other Image Links (6-8 additional images)
- Technical Specifications (dimensions, weight, materials)
- Warnings/Compliance
[SCREENSHOT: Amazon channel with bullet points and image links]
Walmart
Category: Traditional marketplace (general retail)
Key Stats:
- Similar to Amazon but with different validation rules
- Focus on product feed accuracy
- Strict title and description formatting
Walmart Requirements
Walmart's requirements are generally simpler than Amazon's but with specific formatting:
- Title — Clear, brand + product type + key attribute
- Description — 100-500 characters, highlight key benefits
- Category — Exact Walmart category match
- Price — Current retail price
- SKU — Internal tracking
- UPC — Universal product code (required for most products)
Walmart Best Practices
- Include UPC — This is critical; Walmart uses UPC for deduplication across sellers
- Clear titles — "[Brand] [Product Type] [Color/Size]" format works well
- Concise descriptions — Walmart shoppers scan quickly; get key benefits upfront
- Accurate categorization — Wrong category = your product won't be found
- Competitive pricing — Walmart's algorithm favors competitive prices
- Regular inventory updates — Keep stock levels current to avoid suppression
Walmart Channel-Specific Attributes to Prioritize
- Title
- Description
- Category
- UPC
- Price
- SKU
- Inventory/Stock
[SCREENSHOT: Walmart channel with title, description, and category fields]
Google Merchant
Category: Search feed (Google Shopping and Google Search)
Key Stats:
- 15-20 core attributes
- Used for Google Shopping and Google Search results
- Critical for conversion (shopping ads)
Google Merchant Requirements
Google Merchant feeds power Google Shopping and shopping ads. Requirements are simpler but strict:
- Title — 150 characters max, keyword-rich
- Description — 5,000 characters max, detailed overview
- Image Link — High-quality product image
- Price — Current price
- Availability — In stock, out of stock, preorder
- Category — Google's product taxonomy
- Condition — New, refurbished, used
- Brand — Product brand
Google Merchant Best Practices
- Keyword-optimize titles — Google Shopping matches on title keywords; include relevant search terms
- Use dynamic pricing — Feed price should match your website; use integrations to keep it synced
- Complete availability — Mark products as in stock only if they're actually available
- High-resolution images — Minimum 1000x1000 pixels recommended
- Category accuracy — Use Google's taxonomy, not custom categories
- Include rich attributes — Size, color, material help shoppers filter and find your products
Google Merchant Channel-Specific Attributes to Prioritize
- Title (with keywords)
- Description
- Image Link
- Price
- Availability
- Category
- Brand
- Condition
[SCREENSHOT: Google Merchant channel with essential feed attributes]
ChatGPT & GEO (AI Assistant Channels)
Category: Emerging AI/voice channels
Key Stats:
- Growing importance for voice commerce
- Simplified attribute set (product essence)
- Conversation-friendly formatting
ChatGPT/GEO Requirements
These channels optimize products for AI assistant discovery and recommendation:
- Product name — Clear, conversational (not keyword-stuffed)
- Description — Summarize key benefits in 1-2 sentences, AI-friendly
- Category tags — How a shopper would describe this to an AI assistant
- Use cases — "Best for..." statements aligned with assistant queries
- Key specs — Only the essentials (dimensions, color, material)
- Comparison info — How this compares to similar products
ChatGPT/GEO Best Practices
- Conversational tone — Write for voice: "Perfect for a small living room" not "Compact dimensions"
- Use case focus — Emphasize what problems this solves, not just features
- Simplify specs — Only include specs a voice shopper would ask about
- Include comparisons — Position your product relative to competitors
- Optimize for questions — Think about how an AI assistant's users might ask about this product
- Focus on sentiment — These channels reward products that help shoppers feel good about purchases
ChatGPT/GEO Channel-Specific Attributes to Prioritize
- Product Name (conversational)
- Description (benefits-focused)
- Use Cases (problem-solving)
- Key Specs
- Comparison Info
- Category Tags
[SCREENSHOT: ChatGPT channel with conversational product descriptions]
Houzz
Category: Design and home marketplace
Key Stats:
- Visual-first marketplace
- Design-focused attributes
- Style and aesthetic emphasis
Houzz Requirements
Houzz shoppers are design-conscious and aesthetic-focused:
- Title — Style + product type (e.g., "Mid-Century Modern Dining Chair")
- Description — Design story and aesthetic benefits, not just specs
- Images — Lifestyle images showing product in designed spaces (not just product shots)
- Dimensions — Exact measurements
- Materials — Material focus on aesthetics and durability
- Style tags — Design style (Contemporary, Traditional, Rustic, etc.)
- Room type — Where does this fit (Living Room, Bedroom, Kitchen, etc.)
Houzz Best Practices
- Hire a photographer — Houzz rewards beautiful lifestyle images; invest in professional photography
- Style-first positioning — Lead with design style, then specs
- Designer-friendly language — Use terms designers use: "transitional," "statement piece," "accent color"
- Room inspiration — Show products in styled rooms, not isolation
- Material storytelling — Emphasize craftsmanship, sustainability, durability over generic specs
- Color and texture — Houzz shoppers filter by color; ensure accurate color descriptions
Houzz Channel-Specific Attributes to Prioritize
- Title (with design style)
- Description (design-focused)
- Images (lifestyle shots)
- Dimensions
- Materials
- Style Tags
- Room Type
[SCREENSHOT: Houzz channel with lifestyle images and design-focused descriptions]
Mirakl (Marketplace Platforms)
Category: White-label marketplace platform
Key Stats:
- Varies by implementation
- Mathis, Mine, Rue La La use Mirakl
- Flexible attribute mapping
Mirakl Requirements
Mirakl-based marketplaces vary in their specific requirements because they're customized. Common attributes include:
- Brand — Seller brand or product brand
- Category — Marketplace's category taxonomy
- Title — Product name/title
- Description — Detailed overview
- Price — Current price
- Images — Product images
- Shipping — Shipping weight and dimensions
- Custom attributes — Marketplace-specific fields (varies by implementation)
Mirakl Best Practices
- Confirm attribute requirements — Each Mirakl instance is different; check with the specific marketplace
- Understand category taxonomy — Each marketplace has its own categories and required attributes per category
- Test with a small batch — Before uploading 1,000 products, validate with 10-20
- Review feedback loops — These marketplaces often provide rejection reasons; act on them quickly
- Build relationships with marketplaces — Direct contact with Mirakl marketplace teams can clarify requirements
Mirakl Channel-Specific Attributes to Prioritize
- Brand
- Category
- Title
- Description
- Price
- Images
- Shipping Weight/Dimensions
- (Custom attributes per marketplace)
[SCREENSHOT: Mirakl channel with standard and custom attributes]
Nordstrom Rack
Category: Luxury goods marketplace
Key Stats:
- Premium positioning
- Quality and brand emphasis
- Curated assortment
Nordstrom Rack Requirements
Nordstrom Rack positions itself as a curated, premium destination:
- Brand — Brand name (prominent)
- Title — Product name with key attributes (style, color)
- Description — Emphasize luxury, quality, exclusivity
- Category — Nordstrom Rack's assortment taxonomy
- Price — Regular price and sale price (if applicable)
- Images — Professional, high-quality images
- Material & Care — Detailed material composition and care instructions
- Fit details — For apparel, detailed sizing and fit information
- Quality certifications — Sustainability, fair trade, etc. (if applicable)
Nordstrom Rack Best Practices
- Emphasize quality — Nordstrom Rack shoppers expect luxury and curated assortment
- Professional imagery — Investment-quality product photography
- Detailed care instructions — Premium customers care about longevity
- Brand storytelling — If you're an emerging luxury brand, tell your story
- Sustainability angles — Nordstrom Rack customers value eco-friendly options
- Accurate sizing — Premium customers return items if fit is wrong; be precise in size descriptions
Nordstrom Rack Channel-Specific Attributes to Prioritize
- Brand
- Title (with style/color)
- Description (luxury-focused)
- Category
- Price (regular + sale)
- Images (professional)
- Material & Care
- Fit Details (for apparel)
[SCREENSHOT: Nordstrom Rack channel with premium positioning attributes]
Cross-Channel Strategy
Some tips that apply across channels:
- Master your source data — Every channel is only as good as your Products view data. Invest in data quality first.
- Start with one channel — Perfect one marketplace before expanding to others.
- Monitor channel performance — Track sales, reviews, and returns by channel to understand what's working.
- Iterate on prompts — After first generation, review results and refine prompts for better outputs.
- Schedule regular updates — Regenerate content quarterly or when you make major product changes.
- Leverage variations — Different channels can emphasize different product attributes for their unique audiences.
Next Steps
Now that you understand channel-specific requirements:
- Pre-Export Validation Checklist — Ensure your channel data meets requirements
- Exporting Channel Data — Download and submit your marketplace feeds
- Feed Validation & Error Resolution — Fix rejection issues