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ユーザー名空き状況チェック

希望のIDが主要SNSで取得可能かどうかを一括検索。

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Free Social Media Username Availability Checker

Before launching a new brand or pivoting your content strategy, you need to know if your desired handle is available. Our Instant Username Checker scans major networks like Instagram, YouTube, TikTok, Twitter/X, and GitHub simultaneously.

Having a consistent username across all platforms is the golden rule of digital branding. It makes you easier to find, prevents impersonation, and looks significantly more professional when printed on business cards or linked in bios.

Frequently Asked Questions

Our tool pings the profile URLs of the entered username across multiple social media APIs. If the server returns a "404 Not Found", we mark the username as Available. If it returns a profile, it is marked as Taken.

Unfortunately, most platforms (like Instagram and Twitter) do not recycle inactive usernames automatically. If our tool says it's taken, you cannot register it unless the current owner deletes their account or you file a successful trademark claim.

No. Your searches are completely private and performed entirely in real-time. We do not store or register the usernames you search for.

The Importance of Cross-Platform Branding

Why Consistency is Key

Imagine your audience finds a viral video of yours on TikTok and decides to look you up on Instagram. If your username on TikTok is @AlexBuilds but on Instagram it's @Alex_Builds_Official99, you will lose a massive percentage of that crossover traffic. Friction kills growth.

Tips for Choosing the Perfect Handle:

  • Keep it short: Under 15 characters is ideal.
  • Avoid numbers and underscores: They make your username harder to say out loud (e.g., in a podcast or video intro).
  • Be descriptive: If your ideal name is taken, add a relevant suffix like "HQ", "App", "Daily", or "Official".

Protecting Your Digital Identity

Even if you only plan to post on YouTube, you should immediately register your username on TikTok, Instagram, and Twitter. This prevents "squatters" or impersonators from stealing your audience's attention on other platforms as you grow.

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⚡ 無料ブラウザ拡張機能

YouTubeやTikTokなど30以上のSNSでワンクリック保存！

拡張機能を入手 (.zip)

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