[ USERNAME AVAILABILITY ]Check username availability across 11+ selling platforms. Real-time results on eBay, Poshmark, Grailed, Vinted, Whatnot, Bonanza & Chairish — plus Depop, Etsy, Mercari & Ruby Lane. Free, fast, and simple.
[ 03 ] Coverage
Type the username you want, or paste a whole list separated by commas. Select which platforms to check and choose auto-check (up to 5) or manual mode (up to 500). Nothing to install, no account to make.
Eight marketplaces are queried in real time — a green checkmark means available, a red X means taken. The rest link straight to the profile page so you can confirm in a click.
Click each link or use Open All Tabs — "user not found" means available, an active profile means it's taken. Some platforms may show a CAPTCHA when you open links manually.
[ 05 ] Bulk
Rebranding a shop or reserving a handle everywhere? Drop your whole shortlist in and switch to manual mode to get links for up to 500 usernames at once.
Donations help cover hosting costs. Sharing helps just as much — pass it along to someone who needs it.
[ 06 ] Why Username Inspector
Finding the perfect username across multiple selling platforms can be time-consuming. Username Inspector makes it easy to check username availability on eBay, Poshmark, Depop, Etsy, Grailed, Vinted, Mercari, Whatnot, Bonanza, Ruby Lane, and Chairish all at once. Whether you're starting a new reselling business or rebranding your existing stores, our free tool helps you quickly find available usernames that match your brand across all platforms.
No registration required. No downloads. For eBay, eBay Store, Poshmark, Grailed, Vinted, Whatnot, Bonanza, and Chairish, auto-check mode gets you a live available/taken result in seconds. For Depop, Etsy, Mercari, and Ruby Lane, the tool generates a direct link to the profile page so you can verify with one click.
Save time by checking multiple username options across multiple platforms simultaneously. Enter comma-separated names, select which platforms to check, and open all verification links with one click.
Our beginner's guide to reselling online covers what actually sells, how to price items, and land your first sale. Then see our eBay username search guide, choosing the right username, platform username rules, and the best free tools for resellers. Questions? Check the FAQ.
Compare exact fees and payouts across eBay, Poshmark, Mercari, Depop, Etsy, Grailed, and Vinted.
[ 07 ] From the Blog