Amazon Backend Keywords Guide 2026: How to Use Search Terms to Get Indexed

## What Are Amazon Backend Keywords?

Backend keywords (also called search terms) are keywords you add in Seller Central that are not visible to customers but are indexed by Amazon's search algorithm. They allow you to include relevant search terms without cluttering your title, bullet points, or description.

## Where to Find Backend Keywords

In Seller Central: go to your listing, Edit, and look for the 'Product Details' section. The 'Search Terms' field is where backend keywords go. Each field accepts up to 250 bytes (not characters -- multi-byte characters count more). Amazon has five search term fields in some categories, but typically all five are combined into one field by Amazon's indexing system.

## What to Include in Backend Keywords

Prioritize terms that cannot naturally fit in your title or bullets: common misspellings of your product or brand, alternative terminology (British vs. American spelling), synonyms for your product type, complementary terms (products often bought together), and competitor brand names (though Amazon discourages this for trademark reasons). Do not repeat keywords already in your title -- Amazon's algorithm already indexes title terms. Repeating them wastes your 250 bytes.

## What NOT to Include

Amazon's guidelines prohibit: competitor ASINs, irrelevant terms, offensive terms, and misleading terms. Including competitor brand names is a gray area -- technically allowed if accurate (your product is compatible with Brand X) but prohibited for comparison claims.

## Checking Your Indexation

To verify a keyword is indexed: in Amazon's search bar, type the keyword plus your ASIN (e.g., 'waterproof phone case B07XXXXXYZ'). If your listing appears, the keyword is indexed. Tools like Helium 10 Cerebro also check keyword indexation in bulk.