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SemVer Checker

Q: What is semantic versioning?

Semantic Versioning (SemVer) is a versioning scheme defined at semver.org with the format MAJOR.MINOR.PATCH. MAJOR is incremented for breaking (incompatible) API changes, MINOR for new backward-compatible functionality, and PATCH for backward-compatible bug fixes. Optionally, pre-release identifiers (e.g. -alpha.1) and build metadata (e.g. +build.123) can be appended. SemVer is used by npm, Cargo, PyPI, RubyGems, and most modern package managers.

Q: What is the difference between major, minor, and patch?

MAJOR (e.g. 2.0.0): Contains breaking changes that are incompatible with previous versions. Users must read migration guides and update their code. MINOR (e.g. 1.3.0): Adds new features that are backward-compatible. Existing code should continue to work. PATCH (e.g. 1.2.4): Contains bug fixes only, no new features or breaking changes. Safe to update automatically. When you update dependencies, pay most attention to MAJOR version bumps.

Q: What are pre-release versions in SemVer?

Pre-release versions are denoted by a hyphen and identifiers after the patch version, such as 1.0.0-alpha, 1.0.0-beta.1, 1.0.0-rc.2. Pre-release versions have lower precedence than the associated normal version — 1.0.0-alpha < 1.0.0. Identifiers are compared numerically if they are numbers, or lexicographically if they contain non-numeric characters. Build metadata (after +) is ignored in version comparisons.

Parse, compare, and validate semantic version strings — supports npm-style ranges

Parse Version

Compare Versions

Range Checker

satisfies:

Range Pattern	Example	Result

Range Pattern Reference

Pattern	Example	Meaning
^1.2.3	^1.2.3	>=1.2.3 <2.0.0 (same major)
~1.2.3	~1.2.3	>=1.2.3 <1.3.0 (same minor)
>=1.0.0	>=1.0.0	1.0.0 or higher
1.x	1.x	>=1.0.0 <2.0.0
*	*	Any version
1.2.3 - 2.0.0	1.2.3 - 2.0.0	>=1.2.3 <=2.0.0

About SemVer Checker

Working with code and configuration files often means switching between formats, encoding strings, or validating syntax. SemVer Checker eliminates the need for desktop software or command-line utilities by giving you a clean, instant interface right in your browser. Paste your input, get your result — no accounts, no installations, no data leaving your machine.

How to Use

Enter or paste your input Type or paste your data into the input area. You can also use keyboard shortcuts (Ctrl+V) for quick pasting.

Configure options Adjust any settings or options above the input area to customize the output format and behavior.

Process your data Click the primary action button to process your input. The result appears instantly — no server round-trips.

Review the output Check the output area for your processed result. Any errors or warnings will be displayed clearly.

Copy or download Use the Copy button to copy the result to your clipboard, or download it as a file if that option is available.

🔒 Privacy note: All processing happens locally in your browser. Your data is never sent to any server.

Why Use SemVer Checker?

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Instant Results, Zero Setup No need to install CLI tools, configure environments, or write scripts. SemVer Checker gives you the result instantly in your browser — paste, click, done.

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Your Code Stays Private All processing runs locally using JavaScript. Your source code, API keys, tokens, and configuration data never leave your browser — not even temporarily.

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Part of Your Dev Workflow Bookmark this tool alongside your IDE and terminal. When you need a quick format, encode, or validation, it's one tab away — faster than installing yet another npm package.

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Use It Anywhere Works on any device with a modern browser — laptop, tablet, or phone. Perfect for quick fixes when you're away from your development machine.

Frequently Asked Questions

Semantic Versioning (SemVer) is a versioning scheme defined at semver.org with the format MAJOR.MINOR.PATCH. MAJOR is incremented for breaking (incompatible) API changes, MINOR for new backward-compatible functionality, and PATCH for backward-compatible bug fixes. Optionally, pre-release identifiers (e.g. -alpha.1) and build metadata (e.g. +build.123) can be appended. SemVer is used by npm, Cargo, PyPI, RubyGems, and most modern package managers.

MAJOR (e.g. 2.0.0): Contains breaking changes that are incompatible with previous versions. Users must read migration guides and update their code. MINOR (e.g. 1.3.0): Adds new features that are backward-compatible. Existing code should continue to work. PATCH (e.g. 1.2.4): Contains bug fixes only, no new features or breaking changes. Safe to update automatically. When you update dependencies, pay most attention to MAJOR version bumps.

Pre-release versions are denoted by a hyphen and identifiers after the patch version, such as 1.0.0-alpha, 1.0.0-beta.1, 1.0.0-rc.2. Pre-release versions have lower precedence than the associated normal version — 1.0.0-alpha < 1.0.0. Identifiers are compared numerically if they are numbers, or lexicographically if they contain non-numeric characters. Build metadata (after +) is ignored in version comparisons.