XML Product Feed Structure Guide 2026

XML Feed Structure Fundamentals

An XML product feed is a structured file format that allows you to share product data with shopping platforms. The standard format is RSS 2.0 with Google Shopping extensions. Always start with XML declaration, RSS opening tag with namespace, channel element with store info, and item elements for each product.

Key Points

✓ XML Declaration:
✓ RSS 2.0 with Google namespace: xmlns:g="http://base.google.com/ns/1.0"
✓ Each product wrapped in tags with g: prefixed attributes

Required XML Namespaces

XML namespaces prevent conflicts between elements. Google Shopping requires the "g:" namespace (xmlns:g="http://base.google.com/ns/1.0") for all product attributes. Custom attributes can use the "c:" namespace.

1

Structure Validation

Verify XML declaration, RSS tags, and proper nesting of elements.

2

Namespace Check

Ensure g: namespace is declared and used correctly on all attributes.

3

Character Encoding

Confirm UTF-8 encoding and proper escaping of special characters.

Character Encoding and Special Characters

Always use UTF-8 encoding to support international characters. XML special characters must be escaped: & becomes &, < becomes <, > becomes >, " becomes ", and ' becomes '.

Feature	Free Tool	Paid Tool
g: namespace - Google Shopping attributes (required)	✓ Yes	✓ Yes
c: namespace - Custom attributes (optional)	✗ No	✓ Yes
No namespace - RSS channel metadata only	✓ Limited	✓ Unlimited

XML Validation and Testing

Validate your XML feed using online validators, Google Merchant Center diagnostics, or Feed Inspect. Check for well-formed XML, proper namespace declarations, and escaped special characters.

💡 Pro Tip

Validate XML structure before submitting to catch encoding errors

⚠️ Common Mistake

Forgetting to escape ampersands in brand names or titles

✅ Best Practice

Use CDATA sections for descriptions with HTML or special chars

Frequently Asked Questions

What is the difference between RSS 2.0 and Atom feeds?

RSS 2.0 is the standard format for Google Shopping feeds and is widely supported. Atom is an alternative format. For Google Shopping, always use RSS 2.0 with the g: namespace.

Do I need to use CDATA sections in my feed?

CDATA sections are optional but recommended for description fields containing HTML or special characters. They allow you to include unescaped content safely.

How do I validate my XML feed structure?

Use online XML validators, Google Merchant Center's diagnostics tool, or Feed Inspect's free analyzer to check for structural errors before submitting your feed.

What encoding should I use for international characters?

Always use UTF-8 encoding (specified in the XML declaration) to support all international characters including accents, umlauts, and non-Latin scripts.

Can I use nested elements in product feeds?

Yes, some attributes support nested elements (like shipping). However, most Google Shopping attributes are simple text fields within the item element.

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