# SemVer Validator Validate Semantic Versioning 2.0.0 version numbers (x.y.z-alpha.1 format) > Canonical page: https://elysiatools.com/en/tools/semver-validator - **Category:** Validation - **Keywords:** semver, semantic, version, validator, npm, package, release, software ## Overview The SemVer Validator checks if a version number follows the Semantic Versioning 2.0.0 specification, ensuring accurate and consistent versioning in software projects. ## Inputs - **Version Number** (text): Enter semantic version (e.g., 1.0.0, 2.1.3-alpha.1, 3.0.0-beta+exp.sha.5114f85)... ## When to use - When preparing to publish a package to npm or other registries to verify the version string. - When documenting release notes or changelogs to confirm version numbers are correctly formatted. - When automating build or deployment processes that require valid semantic versions for compatibility. ## How it works - Enter the version number in the input field, such as '1.0.0' or '2.1.3-alpha.1'. - The tool parses the input and validates it against SemVer 2.0.0 rules, including pre-release and build metadata. - It returns a text result indicating if the version is valid or invalid, with details on any errors. ## Use cases - Validating npm package versions before publishing to ensure they meet registry standards and avoid errors. - Checking version strings in software documentation or API references to maintain consistency and accuracy. - Integrating into CI/CD pipelines to automatically validate version numbers during build or release steps. ## Frequently asked questions ### What is Semantic Versioning? Semantic Versioning (SemVer) is a versioning scheme using MAJOR.MINOR.PATCH numbers to communicate changes in software, with optional pre-release and build metadata. ### What version formats are supported? The tool supports standard SemVer 2.0.0 formats, including versions with pre-release identifiers (e.g., 1.0.0-alpha) and build metadata (e.g., 1.0.0+build.1). ### Is the validation case-sensitive? No, the validation is not case-sensitive for pre-release identifiers, but it adheres to SemVer rules for allowed characters and structure. ### What happens if the version is invalid? The tool returns an error message explaining why the version is invalid, such as incorrect format or missing required parts. ### Can I validate multiple versions at once? No, this tool validates one version number per use. For batch validation, you would need to process versions individually or use a different tool. ## Related tools - [Phone Validator](https://elysiatools.com/en/tools/phone-validator): Validate and format phone numbers internationally - [US Driver's License Validator](https://elysiatools.com/en/tools/us-drivers-license-validator): Validate United States driver's license numbers based on state-specific format rules (CA, NY, TX, FL, etc.) - [AWS ARN Validator](https://elysiatools.com/en/tools/aws-arn-validator): Validate Amazon Resource Names (ARNs) format for AWS cloud resources - [Global Phone Validator](https://elysiatools.com/en/tools/global-phone-validator): Validate phone numbers from multiple countries including China, US, and more with detailed formatting and carrier info - [US SSN Validator](https://elysiatools.com/en/tools/us-ssn-validator): Validate United States Social Security Number (SSN) format with area number verification - [License Plate Validator](https://elysiatools.com/en/tools/license-plate-validator): Validate license plate formats from multiple countries including China, USA, Japan, and more - [US ZIP Code Validator](https://elysiatools.com/en/tools/us-zip-code-validator): Validate United States ZIP codes including standard 5-digit and ZIP+4 formats - [Batch Phone Validator](https://elysiatools.com/en/tools/batch-phone-validator): Validate and format multiple phone numbers at once with international format support ## Samples - [Android Image Processing Java Samples](https://elysiatools.com/en/samples/android-image-processing-java): Android Java image processing examples including reading/saving images, scaling, and format conversion - [Android Image Processing Kotlin Samples](https://elysiatools.com/en/samples/android-image-processing-kotlin): Android Kotlin image processing examples including reading/saving images, scaling, and format conversion - [Web Image Processing Python Samples](https://elysiatools.com/en/samples/web-image-processing-python): Web Python image processing examples using PIL/Pillow including reading, saving, resizing, and format conversion - [Web Image Processing Rust Samples](https://elysiatools.com/en/samples/web-image-processing-rust): Web Rust image processing examples including image read/save, scaling, and format conversion ## Related content - [Software Identifier Conventions and Format Validation](https://elysiatools.com/en/hubs/software-identifier-conventions-validation): Check UUID structure, Semantic Versioning syntax, and URL slug characters with focused evidence, without confusing a valid format with uniqueness, availability, or release compatibility. - [API Versioning and Breaking Change Review](https://elysiatools.com/en/hubs/api-versioning-breaking-change-review): Compare API versions, plan migrations, and accept compatibility before release. These tools do not replace real deployment or runtime monitoring.