Validate package.json for required fields, semver format, and dependency presence. Everything runs locally in your browser — nothing is uploaded.
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package.json Validator lets you validate package.json for required fields, semver format, and dependency presence. Everything runs locally in your browser — nothing is uploaded.. It works on any device with a modern web browser.
Validate package.json for required fields, semver format, and dependency presence. Everything runs locally in your browser — nothing is uploaded. It runs entirely in your browser — no software installation or data uploads required.
Paste or type your content directly into the provided text area.
Yes. After the initial page load, package.json Validator runs entirely on your device with no internet connection needed. All processing is done locally.
Required fields (name, version), semver format compliance, valid dependency declarations, script definitions, and common best practices like license and description fields.
It validates dependency syntax and detects common issues like missing version ranges, duplicate dependencies, and invalid package names. For vulnerability scanning, use npm audit.
Yes. Private package names (scoped with @scope/name) are validated correctly. The validator ensures the name follows npm naming conventions.
Yes. Version ranges in dependencies (e.g., ^1.2.3, ~1.2.3, >=1.0.0) are validated for correct semver syntax.