Regex for Discord username (new)
Discord username — 2-32 lowercase letters/digits/dot/underscore.
The Discord username (new) regex is ^[a-z0-9._]{2,32}$ — copy it below, or open it in the explainer for a token-by-token breakdown.
The pattern
^[a-z0-9._]{2,32}$
Token-by-token breakdown
Every part of the pattern, left to right:
| Token | Meaning |
|---|---|
^ | start of string (or line in multiline mode) |
[a-z0-9._]{2,32} | between 2 and 32 times: any of: lowercase letters, digits, “.”, “_” |
$ | end of string (or line in multiline mode) |
About this pattern
Identifying and validating user identity (names, contact info, IDs) is one of the most common reasons developers reach for regex. The pattern below handles the format check; for full validation always confirm against a source of truth (database, API, or document).
Quick usage in different languages
This exact pattern — with the correct escaping and idioms for each language:
- JavaScript:
/^[a-z0-9._]{2,32}$/.test(value) - Python:
re.match(r"^[a-z0-9._]{2,32}$", value) - Java:
Pattern.compile("^[a-z0-9._]{2,32}$").matcher(value).matches() - C# / .NET:
Regex.IsMatch(value, @"^[a-z0-9._]{2,32}$") - Go:
regexp.MustCompile(`^[a-z0-9._]{2,32}$`).MatchString(value) - Ruby:
/^[a-z0-9._]{2,32}$/.match?(value) - PHP:
preg_match('~^[a-z0-9._]{2,32}$~', $value)
The explainer’s Code tab regenerates these for any pattern you paste, and the downloadable cheat sheet bundles the breakdown, all seven snippets, and the pitfalls below onto one printable page.
Common pitfalls
- Anchored to the whole string. This pattern uses ^ and $, so it requires the entire input to match. To find it inside a longer text, drop the anchors and use the global (g) flag.
- Lowercase only. Ranges like [a-z] won't match uppercase. Add A-Z (or the i flag) if uppercase input should be accepted.
- Validate beyond format. Matching the format doesn't guarantee the value is real. Confirm the discord username (new) against a source of truth (database, API, or checksum) where it matters.
Related patterns
More patterns in the Identity & contact category:
- LinkedIn profile URL
- Spotify URI
- YouTube video ID
- Phone with extension
- Email address
- GitHub username
See also
Browse all 300 patterns in the library, or open this regex in the interactive explainer to see a token-by-token breakdown, test against custom input, and generate code in seven languages.