Every click you buy lands on your listing. SellerOS grades it against Amazon's own rules and limits, helps you rewrite it, and then proves whether the change worked.
The analyzers audit your content the way Amazon evaluates it:
One score from 0 to 100, built from individual checks — and every point you lost comes with the specific fix that earns it back.
Live counters for every field against Amazon's real limits — including backend search terms, which Amazon caps at 250 bytes, not characters. One emoji costs you four.
See which terms your copy actually emphasizes and where repetition crosses into stuffing — because a listing written for a ranking algorithm converts nobody.
Flags the promotional phrasing Amazon prohibits before Amazon flags it for you — the difference between editing a draft and appealing a suppressed listing.
Claude drafts titles, bullets and descriptions from your product details and target keywords. You review, edit and apply — nothing is ever published to Amazon automatically.
The index checker verifies you're actually indexed for your target terms, and the A/B split-test calculator tells you whether the new copy really converts better — or you just had a good week.
Because that's how Amazon measures them: the backend search-term field is capped at 250 bytes of UTF-8, not 250 characters. Accented characters and symbols cost more than one byte each, so a character counter will happily wave through a field Amazon truncates. SellerOS counts what Amazon counts.
No. The optimizer drafts copy from your product details and keywords, and that's where its authority ends — you review, edit and apply the text yourself. Nothing is published to Amazon on your behalf.
Amazon prohibits promotional claims in listing content — the compliance check flags that phrasing while it's still a draft, so you fix it in an editor instead of discovering it in a suppression notice.
Yes — paste your title, bullets, description and search terms into the analyzer and auditor directly. Every listing tool works without connecting anything.
Paste any listing — yours or a competitor's — into the analyzer and see the score, the failed checks, and the fixes. No sign-up needed for the demo.
14-day free trial · Cancel anytime · We never see your Seller Central password