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AiTechWorlds
AiTechWorlds
Check a handle against Instagram, TikTok, YouTube, X, Facebook, Pinterest, GitHub and Threads length/character rules, with quick-check links.
Type a handle to check its format against each platform's rules
100% in-browser validates handle length/characters against each platform's published rules, and flags reserved words or well-known brand collisions from a curated local list. GitHub's public API allows a real, live availability check directly from your browser ("Check live") no other platform in this list exposes a CORS-enabled availability endpoint, so for those, use the "Check" link to verify on the real site.
Username Handle Validator checks a proposed handle against each platform's published length and allowed-character rules (Instagram, TikTok, YouTube, X, Facebook, Pinterest, GitHub, Threads) and provides a direct link to that platform's profile URL so you can manually confirm whether it's actually taken.
Type a handle
Enter the username you want to check, with or without the @ symbol.
Review each platform
See a pass/fail check against each platform's length and character rules.
Click 'Check'
Open the live profile URL on each platform to confirm real availability.
100% Private No Server Required
All processing happens directly in your browser. No data is uploaded, stored, or transmitted to any server.
Last reviewed on July 17, 2026 by the AiTechWorlds Tools Team. All processing runs locally in your browser.