How are pre-release versions compared?

Pre-release versions have lower precedence than standard releases (e.g., 1.0.0 > 1.0.0-alpha). Multiple pre-release identifiers are compared left to right: numeric fields numerically, ASCII letters lexicographically, numeric identifiers always less than letter ones.

What's the difference between 1.0.0 and 1.0.0.0?

1.0.0 is valid SemVer. 1.0.0.0 is not standard SemVer (4 numeric segments). This tool identifies non-standard formats. Some package managers may use extended formats, but they don't strictly follow SemVer 2.0.0.

Does this tool support version ranges?

This tool compares individual versions. For version ranges (^1.0.0, ~1.2.0, >=1.0.0 <2.0.0), use npm's semver library or other package-manager-specific tools.

Why is SemVer important for dependency management?

SemVer is fundamental to npm, PyPI, Cargo, and other package managers. Proper SemVer ensures dependency compatibility and prevents build failures from breaking changes. This tool helps you understand version relationships.

Free SemVer Compare · Online Semantic Version Comparison ...

📖 How to Use

✦ Quick Start

Enter input：Paste or type your data in the input field.
Configure options：Adjust parameters as needed.
View results：Click the button to process. All data is handled locally in your browser — nothing is uploaded to any server.

✦ Introduction to Semantic Versioning

SemVer 2.0.0 defines a standardized version format: MAJOR.MINOR.PATCH. MAJOR changes indicate breaking API changes, MINOR for backward-compatible features, PATCH for backward-compatible bug fixes.

✦ How to Compare Pre-release Versions

Pre-release versions are appended with a hyphen (e.g., 1.0.0-alpha.1) and have lower precedence than release versions. Comparison is done segment by segment: numeric fields numerically, identifiers ASCII lexicographically.

✦ Version Ranges and Dependency Management

In package managers like NPM and Cargo, version range syntax (^1.2.3, ~1.2.3) defines acceptable update ranges. Understanding version comparison helps configure dependencies correctly and avoid build failures.

📊 SemVer Compare Tool

📊 Compare Versions

📖 How to Use

✦ Quick Start

✦ Introduction to Semantic Versioning

✦ How to Compare Pre-release Versions

✦ Version Ranges and Dependency Management