Username Availability Checker
Check a handle across major platforms at once.
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About the Username Availability Checker
Check whether a handle is taken across major platforms at once. The Toolcenter Username Availability Checker probes GitHub, GitLab, Instagram, X, TikTok, YouTube, Reddit, Twitch, Pinterest, Medium, Dev.to and npm from this app’s server and reports available, taken or unknown for each, with a link to confirm.
How to use it
- 1Type the handle you want (without the @).
- 2Click “Check”.
- 3Scan the available / taken / unknown results.
- 4Open any link to confirm before registering.
Key features
- 12 platforms checked in parallel
- Available / taken / unknown status
- Direct link to each profile URL
- Handle validation as you type
- Server-side probing, private results
Frequently asked questions
Why do some results say “unknown”?+
The platform blocked the automated request or returned an ambiguous response. Open the link to check manually.
Is a green result a guarantee?+
It is a strong signal, not a guarantee — always confirm on the platform itself before building a brand around a handle.
Does it register the username for me?+
No. It only checks availability. You sign up on each platform yourself.
Is my handle stored?+
No. It is used only for the checks in that request.
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