Free Amazon Seller Tools
5 free tools. 3 run with no signup. 2 need a free account. Each checks one thing against Amazon's published rules or your own numbers.
Amazon Title Character Counter
Check a title against Amazon's 75-character limit. Shows what falls past the cut and flags prohibited characters, promotional phrases and repeated words. Includes an Item Highlights counter (125 characters).
Open tool → No signupAmazon Search Terms Byte Counter
Count backend search terms in bytes, without spaces and punctuation, against Amazon's byte limit. Flags ASINs, temporary and subjective words, and repeats. Returns a cleaned copy.
Open tool → No signupAmazon ACOS Calculator
ACOS, ROAS and TACoS from Ads spend and sales. Add price, cost and fees to get break-even ACOS.
Open tool → Free accountAmazon Listing Standards Check
Paste an ASIN or URL. See which of 14 mechanical rules your live listing passes: title length, bullets, images, ratings.
Open tool → Free accountNegative Review Violation Check
Paste a negative review. See whether it breaks Amazon policy and can be reported. Honest reviews stay up.
Open tool →The free tools check one field at a time.
OptimalCentral scores your full listing (title, bullets, keywords, images, intent match, AI-search readiness) and returns a prioritized fix list. On the Brand plan, with your account connected, its optimizing agent, Ossy, keeps working for you around the clock. Free 14-day trial, no card required.
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