SemVer Validator

Check whether versions follow semantic versioning and see their major, minor, patch, pre-release and build parts.

Versions (one per line)

1.2.3: Valid — major 1, minor 2, patch 3
v2.0.0: Not strictly valid — remove the leading "v" (tools like npm accept it, semver.org does not)
1.0.0-beta.1: Valid · pre-release beta.1 — major 1, minor 0, patch 0
1.2: Invalid — a version needs major.minor.patch (add a patch number)
01.2.3: Invalid — numbers can't have leading zeros
3.4.5+build.7: Valid · build build.7 — major 3, minor 4, patch 5

Follows the semantic versioning 2.0.0 rules: MAJOR.MINOR.PATCH, an optional -prerelease and an optional +build.

About semver validator

Semantic versioning writes versions as MAJOR.MINOR.PATCH. The validator checks a version and shows its parts.

What the numbers mean

MAJOR changes when there are incompatible API changes.
MINOR adds features in a backward-compatible way.
PATCH fixes bugs without changing the API.
Pre-release tags like 1.0.0-beta.1 sit before the release.

A worked example

The version 2.4.1-beta.3+build.7 is valid: major 2, minor 4, patch 1, pre-release beta.3 and build metadata build.7. The version 1.2 is not valid semantic versioning, because it lacks a patch number, and 01.2.3 is invalid because of the leading zero.

What each part promises

Patch: bug fixes only, safe to upgrade.
Minor: new features that keep working with old code.
Major: breaking changes, so read the notes first.

Pre-release order

Pre-release versions sort in a defined order: 1.0.0-alpha comes before 1.0.0-alpha.1, then 1.0.0-beta, then 1.0.0-rc.1 and finally 1.0.0.

How to use semver validator

1Enter your valuesFill in the fields — example values are already there to start from.

2Adjust the optionsChange the choices to match your situation. Results update as you type.

3Use the resultRead it, or copy it with the Copy button.

Your privacy on this tool

This tool is built so that what you enter stays with you.

Everything you type or upload is processed in your browser, on your own device.
Nothing you enter is sent to our servers, so we cannot see, keep or share it.
We do not save your input. A few tools remember small settings, such as a chosen time zone, in your own browser only.
No account, email address or sign-up is needed, and nothing is watermarked.
If you accept analytics, we count page views and tool use. We never collect the contents of your files or text.
Ads, where shown, sit below the tool and are not given what you enter.

Read the full privacy policy.

Questions people ask

MAJOR.MINOR.PATCH, such as 1.4.2, with optional -prerelease and +build parts.

Not strictly. Tools like npm accept it, but semver.org doesn't.

No. Everything is worked out in your browser and nothing you type is sent to a server.

SemVer Comparator Version Number Generator package.json Formatter package.json Generator NPM Package Search NPM Version Checker Dependency Version Comparator Changelog Generator

About semver validator

Semantic versioning writes versions as MAJOR.MINOR.PATCH. The validator checks a version and shows its parts.

What the numbers mean

MAJOR changes when there are incompatible API changes.
MINOR adds features in a backward-compatible way.
PATCH fixes bugs without changing the API.
Pre-release tags like 1.0.0-beta.1 sit before the release.

A worked example

What each part promises

Patch: bug fixes only, safe to upgrade.
Minor: new features that keep working with old code.
Major: breaking changes, so read the notes first.

Pre-release order

Pre-release versions sort in a defined order: 1.0.0-alpha comes before 1.0.0-alpha.1, then 1.0.0-beta, then 1.0.0-rc.1 and finally 1.0.0.

Questions people ask

MAJOR.MINOR.PATCH, such as 1.4.2, with optional -prerelease and +build parts.

Not strictly. Tools like npm accept it, but semver.org doesn't.

No. Everything is worked out in your browser and nothing you type is sent to a server.

SemVer Validator

About semver validator

What the numbers mean

A worked example

What each part promises

Pre-release order

How to use semver validator

Your privacy on this tool

Questions people ask

More tools you may like

SemVer Validator

About semver validator

What the numbers mean

A worked example

What each part promises

Pre-release order

How to use semver validator

Your privacy on this tool

Questions people ask

More tools you may like