Amazon

Amazon listings, written to Amazon's actual rules

Title and Item Highlights are both search inputs. Backend terms are invisible and byte-limited.

Every field, every limit

These are the limits the generator enforces, then re-checks after writing.

Since 27 July 2026 general-category titles are capped at 75 characters. This is the single biggest change in Amazon listing practice in years, and most listing advice still assumes 200.
Title formula that fits the cap: Brand + Product Type + Primary Differentiator or Size/Variant. Typically 45–65 characters.
Secondary detail — materials, certifications, pack counts, use cases, filterable attributes — belongs in Item Highlights, not the title.
Item Highlights is searchable and Amazon says it is not ranked below the title, so it is real keyword space, not a caption.
Only the first 1,000 bytes across all five bullets are indexed, so front-load the keyword-bearing bullets.
Backend search terms are indexed but invisible. Never repeat a word already in the title — it wastes the byte budget.
Put likely misspellings and synonyms in backend terms, never in the title.

A title over 75 characters gets rewritten by Amazon's AI without your approval, and undoing it needs a support case.
Backend terms one byte over 249 cause Amazon to silently drop EVERY backend keyword on the listing.
No promotional language anywhere: 'free shipping', 'sale', 'best seller', 'money-back guarantee'.
No competitor brand names or comparative claims.
No special characters or emojis in bullets.
No contact details, URLs or requests for reviews.
No medical or therapeutic claims.

The same photo produces a different listing for each. Different keywords, not the same ones reshuffled.