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ListingSafe is an Etsy listing checker and optimizer: a search score, a rewritten title, 13 tags and description, and trademark and policy flags with the USPTO record behind each one. Its free Chrome extension shows the real tags on any Etsy listing.

Website, pricing, platforms and company facts side by side.
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| Website | f6s.com | justaduck.app |
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| Company | — | Startup from Taiwan · 1 - 9 employees · 2026 |
| Listed in |
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ListingSafe (justaduck.app) is an Etsy listing checker and optimizer. One scan gives a listing a search score, a rewritten title, 13 tags and description, and flags trademarked words and Etsy policy problems, with the USPTO record behind each trademark flag, so the SEO rewrite never brings a...
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ListingSafe — Protect Your Etsy Shop from Trademark Violations
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As answered by people managing CommitCat and ListingSafe.app.
ListingSafe.app's answer:
It started after seeing how many Etsy sellers get blindsided by trademark takedowns — often for words they had no idea were trademarked. Reinstating a suspended listing is stressful and slow, so ListingSafe was built to catch those problems before publishing instead of after.
ListingSafe.app's answer:
ListingSafe runs on Spring Boot with PostgreSQL, hosted on Railway. Scanning is powered by Google Gemini combined with a curated trademark/policy rules library and live USPTO API lookups. Billing is handled by Paddle, and the browser extension is built on Chrome Manifest V3.
ListingSafe.app's answer:
Independent Etsy sellers and small handmade shops — ListingSafe is a tool for individual sellers, not enterprises
ListingSafe.app's answer:
Etsy sellers, mostly solo makers and small shops, who want their listings found in search without brand names in the title or tags, and who want to see what's selling in other shops before they write their own.
ListingSafe.app's answer:
It checks and optimizes in the same scan. The SEO rewrite (a new title, 13 tags and description) goes through the trademark check, with the USPTO record behind each flag, so the rewrite never brings a brand name back in. The free Chrome extension shows the real tags on any Etsy listing with trademarked words marked red, so you can see what other shops use without copying a brand name into your own tags.
ListingSafe.app's answer:
eRank, Marmalead and Alura are built around keyword research. ListingSafe works on the listing itself: one scan gives a search score, a new title, 13 tags and description, and flags the trademarked words and policy problems that get listings taken down. Words like "Koozie" and "Onesie" are registered trademarks, and that's the kind of thing it catches before you publish. It also analyses any shop (what's selling and the tags behind it), writes new listings, and checks where your listing photos show up.
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