Question 1

What is Semver and why is it important?

Accepted Answer

Semver (Semantic Versioning) is a version numbering scheme using MAJOR.MINOR.PATCH format (e.g., 2.1.0). It communicates the type of changes in each release: MAJOR for breaking changes, MINOR for backward-compatible new features, and PATCH for backward-compatible bug fixes. It's essential for dependency management in software development.

Question 2

How do I check if a version number is valid Semver?

Accepted Answer

Enter the version number in the validator above and click Validate, or just start typing for real-time feedback. A valid Semver 2.0 version follows the pattern MAJOR.MINOR.PATCH (e.g., 1.2.3), optionally with a prerelease tag (e.g., -alpha.1) and build metadata (e.g., +build.123). Leading zeros (like 01.2.3) and extra segments (1.2.3.4) are invalid.

Question 3

What do ^ and ~ mean in version ranges?

Accepted Answer

Caret (^) allows changes that do not modify the leftmost non-zero digit — e.g., ^1.2.3 matches >=1.2.3 <2.0.0. Tilde (~) allows patch-level changes — e.g., ~1.2.3 matches >=1.2.3 <1.3.0. Use our Range Matching tool to test versions against these expressions.

📦 Semver Validator & Checker

🔍 Validate Version

Or paste multiple versions (one per line) for batch checking:

⚖️ Compare Versions

🎯 Range Matching

What is Semver Validator & Checker?

Use Cases

Key Features