Semantic Version (SemVer) Regex Pattern

Match semantic versioning strings (e.g., v1.2.3-beta.1+build.123) with regex. Supports pre-release and build metadata.

The Pattern

/\bv?\d+\.\d+\.\d+(?:-[\w.]+)?(?:\+[\w.]+)?\b/g

How It Works

Token	Meaning
`\b`	Word boundary
`v?`	Optional "v" prefix
`\d+`	Major version (one or more digits)
`\.`	Literal dot separator
`\d+`	Minor version (one or more digits)
`\.`	Literal dot separator
`\d+`	Patch version (one or more digits)
`(?:-[\w.]+)?`	Optional pre-release label (e.g., -beta.1)
`(?:\+[\w.]+)?`	Optional build metadata (e.g., +build.123)

Test Cases

✅v1.0.0Match

✅2.3.4-beta.1Match

✅10.20.30+build.456Match

✅1.2.3-alpha+001Match

❌1.2No match

❌version1No match

Code Examples

javascript

const semverRegex = /\bv?\d+\.\d+\.\d+(?:-[\w.]+)?(?:\+[\w.]+)?\b/g;
const text = "Versions: v1.0.0, 2.3.4-beta.1, 10.20.30+build.456";
const matches = text.match(semverRegex);
console.log(matches); // ["v1.0.0", "2.3.4-beta.1", "10.20.30+build.456"]

python

import re
semver_regex = r'\bv?\d+\.\d+\.\d+(?:-[\w.]+)?(?:\+[\w.]+)?\b'
text = "Versions: v1.0.0, 2.3.4-beta.1, 10.20.30+build.456"
matches = re.findall(semver_regex, text)
print(matches)  # ['v1.0.0', '2.3.4-beta.1', '10.20.30+build.456']

Common Use Cases

Package management - parse dependency versions
Release automation - extract version numbers from changelogs
CI/CD pipelines - validate version tags in git
Compatibility checking - compare software versions

Related Patterns

UUID Date Format (YYYY-MM-DD)Hex Color Code

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Try this pattern in Regex Tester →