Discover high-converting keywords for your eBay listings. Generate brand combinations, category modifiers, and long-tail variations optimized for eBay's Cassini search engine — completely free, no signup required.
Last updated: March 2026
Type a product keyword to generate eBay-optimized suggestions.
eBay keyword research is fundamentally different from Google keyword research. On Google, you optimize for informational and navigational queries. On eBay, every search has purchase intent — buyers are ready to buy. This means your keyword strategy should focus on product-specific terms that match what buyers type when they know exactly what they want.
eBay's Cassini search engine uses a combination of keyword matching and behavioral signals. When a buyer searches "Sony WH-1000XM5 wireless headphones black," Cassini first identifies listings with matching title keywords and item specifics. It then ranks those matches by: listing quality score, seller performance, price competitiveness, shipping speed, and historical conversion rate for that search term. Your keywords get you into the candidate pool; everything else determines your ranking within it.
Brand keywords are the highest-converting on eBay. "Apple iPhone 15" converts far better than "smartphone." Feature keywords like "128GB," "wireless," or "waterproof" help buyers find the exact variant they want. Modifier keywords like "new," "sealed," "lot," or "bundle" signal condition and quantity. Long-tail keywords like "Sony WH-1000XM5 noise cancelling headphones black" have lower competition and higher conversion rates because they match very specific buyer intent.
The best eBay keyword research sources are: eBay's search autocomplete (type a word and see suggestions), Terapeak research in Seller Hub (shows actual search volume and sell-through rates), completed listing searches (see what terms successful sellers use), and competitor listing analysis. This tool helps you combine these insights into optimized keyword sets for your specific products and categories.
Auction listings benefit from broad, high-volume keywords since you want maximum eyeballs to drive bidding. Fixed-price listings benefit from specific, long-tail keywords that attract ready-to-buy shoppers. If you sell multiple similar items, create separate listings for different keyword variations rather than trying to capture every search term in a single 80-character title.
Marqetir's AI analyzes top-performing listings in your category and automatically generates keyword-optimized titles and descriptions for eBay, Amazon, and 10+ European marketplaces.