*These platforms are manual search only.
How to Check Username Availability
- Select which platforms you want to check
- Enter your desired usernames separated by commas
- Choose a mode: Auto-check (up to 5 usernames) checks availability instantly — or Manually check (up to 500 usernames) generates links you open yourself
- Auto-check results: ✓ green = available, ✗ red = taken, ? yellow = that platform requires manual verification
- Manual mode: click each link or use Open All Tabs — "user not found" means available, an active profile means taken
- Note: Some platforms may show a CAPTCHA when you open links manually
Results
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Buy Me a BeerWhy Use 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.
Fast & Free Multi-Platform Username Checker
No registration required. No downloads. Just select your platforms, enter your desired usernames, and instantly check their availability. Our tool works by generating direct links to user profiles on each platform, allowing you to see immediately if a username is taken or available across eBay, Poshmark, Depop, Etsy, Grailed, Vinted, Mercari, Whatnot, Bonanza, Ruby Lane, and Chairish.
Check Multiple Usernames at Once
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. Perfect for brainstorming sessions when you need to find the right name that's available across all your selling platforms.
eBay Username Search & More
Need to do an eBay username search? Whether you're looking up an existing seller or checking if a name is available, our tool and guides have you covered. Learn how to check eBay username availability before you register, or explore our blog for guides on choosing the right username and understanding each platform's username rules. Have questions? Check the FAQ.