Developer
Package.json Validator
Validate package.json files and identify missing fields, formatting errors and dependency issues.
Tool
Loading tool...
About this Tool
Use this free package.json validator to verify Node.js project configuration files. Detect syntax issues, missing fields and common package metadata problems.
Examples
- {"name":"my-app","version":"1.0.0"}
- {"private":true,"scripts":{"dev":"vite"}}
- {"dependencies":{"react":"^19.0.0"}}
Frequently Asked Questions
What is package.json?
package.json is the central configuration file used by Node.js and npm projects.
Why validate package.json?
Validation helps identify malformed JSON, missing metadata and configuration issues.
Can dependency definitions be checked?
Yes. Dependency and script sections can be inspected for common problems.
Related Tools
Gitignore Generator
Generate .gitignore files for software projects.
License Generator
Generate open source software licenses.
README Generator
Generate structured README files for software projects.
Changelog Generator
Generate release notes and changelog entries.
Semantic Version Calculator
Calculate semantic version numbers and version increments.