GradeThread: Grade & List by Pearson Media

AI condition reads while you shop eBay, Poshmark, Grailed, Mercari, Depop & Vinted — plus cross-listing for FlipDesk sellers.

Some features may require payment

Available on Firefox for Android™

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About this extension

GradeThread gives you an independent, AI-powered condition read on any pre-owned clothing listing — before you buy — and, for resellers, one-click cross-listing to your other marketplaces.

SHOP SMARTER — free, no account needed
Open a listing on eBay, Poshmark, Grailed, Mercari, Depop, or Vinted and click "Get condition read." GradeThread's AI reads the listing photos and gives you:
• A 1–10 condition score with a confidence level
• A flag when the seller may be over-grading the item
• Condition-adjusted price fairness
• Which photos to ask the seller for before you buy

SELL FASTER — for FlipDesk sellers
Cross-post your FlipDesk drafts to Poshmark, Mercari, and Grailed. The new-listing form is prefilled in your OWN logged-in browser tab — you just review and click List.

YOUR SESSIONS STAY YOURS
No "cookies" permission and no access to your marketplace accounts. Condition Check sends only the public listing photos already on the page to GradeThread's grading service; nothing is stored on our servers, and your recent reads stay on your device. Cross-listing runs entirely in your browser — GradeThread never sees your marketplace password or cookies.

Buyer research is free for everyone. Seller cross-listing unlocks with an active FlipDesk plan at gradethread.com.

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Permissions and data

Required permissions:

Access your data for sites in the gradethread.com domain
Access your data for sites in the ebay.com domain
Access your data for sites in the ebay.co.uk domain
Access your data for sites in the ebay.de domain
Access your data for sites in the ebay.ca domain
Access your data for sites in the ebay.com.au domain
Access your data for sites in the ebay.fr domain
Access your data for sites in the ebay.it domain
Access your data for sites in the ebay.es domain
Access your data for sites in the ebay.ie domain
Access your data for sites in the ebay.nl domain
Access your data for sites in the ebay.at domain
Access your data for sites in the ebay.ch domain
Access your data for sites in the ebay.pl domain
Access your data for sites in the ebay.be domain
Access your data for sites in the poshmark.com domain
Access your data for sites in the poshmark.ca domain
Access your data for sites in the grailed.com domain
Access your data for sites in the mercari.com domain
Access your data for sites in the depop.com domain
Access your data for sites in the vinted.com domain
Access your data for sites in the vinted.co.uk domain
Access your data for sites in the vinted.fr domain
Access your data for sites in the vinted.de domain
Access your data for sites in the vinted.es domain
Access your data for sites in the vinted.it domain
Access your data for sites in the vinted.nl domain
Access your data for sites in the vinted.pl domain
Access your data for sites in the vinted.lt domain
Access your data for sites in the vinted.cz domain
Access your data for sites in the vinted.be domain
Access your data for sites in the vinted.at domain
Access your data for sites in the vinted.ro domain
Access your data for sites in the vinted.hu domain
Access your data for sites in the vinted.sk domain
Access your data for sites in the vinted.pt domain
Access your data for sites in the vinted.se domain
Access your data for sites in the vinted.lu domain
Access your data for sites in the vinted.hr domain
Access your data for sites in the vinted.gr domain
Access your data for sites in the vinted.dk domain
Access your data for sites in the vinted.fi domain
Access your data for gradethread.com
Access your data for poshmark.com
Access your data for www.mercari.com
Access your data for www.grailed.com

Optional permissions:

Access your data for sites in the gradethread.com domain
Access your data for sites in the poshmark.com domain
Access your data for sites in the mercari.com domain
Access your data for sites in the grailed.com domain
Access your data for gradethread.com

Required data collection, according to the developer:

Website content

Optional data collection, according to the developer:

Technical and interaction data