Why format rules vary
Every platform has its own rules for what characters are allowed, where dots can appear, whether consecutive underscores are permitted, and how capitalization is treated. A handle that works on Threads may fail on Twitch, and vice versa.
Pattern that works everywhere
Lowercase letters and numbers only, with an occasional underscore or period in the middle (not at the start or end), is the safest pattern for cross-platform consistency. Avoid hyphens entirely — most platforms reject them in usernames.
The safest cross-platform pattern
If you want one handle that passes every platform’s format rules:
- Lowercase letters and numbers only, 3–15 characters
- Optional separator in the middle: a single underscore or period (never at the start or end)
- Avoid hyphens — Instagram, TikTok, X, and Snapchat reject them
- Avoid consecutive punctuation — no double dots or double underscores
A handle following this pattern will pass format validation on all 16 platforms NameSniper checks.