RoundLemon AI Marketplace Lister

Cross-list your RoundLemon stock to Facebook, Vinted, Whatnot and Depop from your own browser, and keep each sale in sync.

List once. Sell anywhere. The RoundLemon browser helper connects the marketplace tabs you already use to your RoundLemon inventory, so you can cross-list faster and never sell the same item twice. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✦ WHAT THE EXTENSION DOES ▸ Fills in listings for you. Open a listing form and the helper adds your photos, title, price and category from your RoundLemon inventory. ▸ Posts and removes listings where supported. On Depop and Whatnot it can post the listing in your open tab, then take it down automatically when the item sells somewhere else. ▸ Keeps you in control. On Vinted and Facebook Marketplace it only fills in the form. You always press Publish yourself, and it never posts on your behalf. ▸ Records your sales. It reads your wardrobe and orders so each sale, and the real price you accepted, is logged against your stock. ▸ Helps with offers. Send offers to interested buyers with a daily cap, and nobody is offered twice. You press Make an offer. ▸ Prints thermal labels. A Download 4x6 label button crops A4 postage labels to thermal-printer size, with the parcel's contents printed underneath. Labels can be downloaded in batches as one merged PDF. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✦ PART OF ROUNDLEMON RoundLemon is the back office for multi-platform resellers. The extension is the part that works inside your own signed-in browser; the rest lives at roundlemon.app: ✓ AI listings written from your photos, which ask you rather than guess when a detail can't be confirmed ✓ One inventory, edited once and synced everywhere ✓ Automatic delisting when something sells ✓ Real profit after purchase cost, postage and fees ✓ Stock alerts so you find good buys first ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ ✦ PLANS The free plan includes the full selling toolkit and 5 AI listings a month, with no card needed. Paid plans start at £4.20 a month with a 14-day free trial. Billed monthly, no contracts, cancel any time. Full details at roundlemon.app. ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ RoundLemon: less admin, more selling.