Keywords and the Amazon Algorithm
Amazon's A9 algorithm indexes your listing based on the words it contains. Every relevant keyword in your listing represents a potential search match. However, there is a balance between comprehensive keyword coverage and creating listings that actually convince humans to buy. The best listings satisfy both the algorithm and the buyer — keyword-rich content that reads naturally.
Title Keywords: Quality Over Quantity
Amazon titles have category-specific character limits, typically between 150 and 200 characters. Your title should include your primary keyword, brand name, key product attributes (size, colour, quantity), and one or two secondary keywords. Do not stuff every keyword into the title — it becomes unreadable and can hurt conversion rates even if it helps discoverability.
Bullet Point Keywords
Five bullet points give you significant space for keywords. Each bullet should naturally incorporate two to four relevant keywords while clearly communicating a benefit or feature. Start each bullet with the benefit, then expand with details that include keywords organically. Well-written bullets cover 15 to 25 distinct keyword phrases across all five bullets.
Description and A+ Content
Your product description provides additional indexing space. For standard descriptions, include keywords that did not fit naturally in bullets. For brand-registered sellers, A+ Content images with alt text and body copy offer more keyword real estate. However, A+ Content text may not be indexed for search, so do not rely on it exclusively for keyword coverage.
Backend Search Terms
Backend search terms are invisible to buyers and have a 250-byte limit. Use this space for keywords that do not fit naturally in your visible listing. Include common misspellings, alternative names, synonyms, and related terms. Do not repeat words already in your title or bullets as Amazon indexes each word only once regardless of how many times it appears.
Signs You Have Too Many Keywords
If your listing reads like a keyword list rather than a product description, you have gone too far. Indicators include sentences that make no grammatical sense, bullet points that jump between unrelated terms, titles that are just strings of words, and descriptions that repeat the same terms excessively. Buyers notice keyword stuffing and it erodes trust.
The Practical Approach
Aim for 100 to 150 unique, relevant keywords distributed across your entire listing. Front-load the most important terms in your title and first two bullet points. Use bullets three through five for secondary keywords. Fill backend terms with everything else. Then read your listing aloud — if it sounds unnatural, rewrite for readability while keeping the keywords present in more natural phrasing.