Amazon Search Term Optimizer
Maximize your product's discoverability with perfectly optimized backend keywords. Deduplicated, byte-compliant search terms that help Amazon index your listing for more queries.
How to Optimize Your Search Terms
Enter Product & Keywords
Provide your product details and paste your existing title and bullet points so the AI can avoid duplicating indexed keywords.
Add Keyword Ideas
Include any synonyms, alternate spellings, or related terms you want considered for the backend field.
Get Optimized Search Terms
Receive a clean, deduplicated, byte-limit-compliant search term string ready to paste into Seller Central.
Frequently Asked Questions
What are Amazon backend search terms?
Backend search terms are hidden keywords that you enter in Seller Central under the 'Search Terms' field of your listing. They are not visible to customers but are indexed by Amazon's A9 algorithm for search matching. Think of them as the SEO meta keywords for your Amazon listing. They give you the opportunity to include synonyms, alternate spellings, abbreviations, and related terms that did not fit naturally into your title or bullet points.
What is the character or byte limit for Amazon search terms?
Amazon enforces a 249-byte limit for backend search terms (not 249 characters — bytes matter because accented or special characters use more than one byte). If you exceed the limit, Amazon may ignore the entire search term field, meaning none of your backend keywords get indexed. The optimizer automatically calculates byte count and ensures your search terms stay within the limit while maximizing keyword coverage.
How do I know if Amazon is indexing my search terms?
To check indexing, search for your ASIN combined with a specific backend keyword on Amazon (e.g., 'B0XXXXXXXX keyword'). If your product appears in the results, that keyword is indexed. If it does not appear, the keyword may not be indexed — possibly because you exceeded the byte limit, duplicated words already in your title, or used restricted terms. Regular indexing checks after updating search terms help you confirm that your optimization efforts are working.
Should I repeat keywords from my title in backend search terms?
No, Amazon already indexes keywords from your title, bullet points, and description. Repeating them in backend search terms wastes your limited 249-byte budget. Instead, use the backend field exclusively for synonyms, misspellings customers commonly make, abbreviations, and related terms that could not fit elsewhere. The AI optimizer automatically deduplicates against your existing listing content to maximize the number of unique indexed keywords.
What formatting rules should I follow for backend search terms?
Use lowercase only — Amazon is not case-sensitive, and uppercase does not help. Separate words with single spaces (no commas, semicolons, or other punctuation). Do not include your brand name, ASINs, or competitor brand names, as Amazon prohibits these. Avoid subjective claims like 'best' or 'amazing.' Do not repeat any word more than once. The optimizer handles all of these formatting rules automatically and outputs clean, policy-compliant search terms ready to paste into Seller Central.
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