Is package.json Validator free?

Yes. It is free to use and requires no account.

Does package.json Validator upload my source?

No. Ordinary processing happens locally in the current browser. The JavaScript runner uses a short-lived isolated browser worker.

Yes. Import a relevant JavaScript, JSON or text file, then save the input or processed result.

BUILD & EXPORT · FREE JAVASCRIPT TOOL

Validate package.json structure, inspect scripts and dependencies, sort keys and export a clean file.

Free to useNo sign-upRuns in your browser

package.json ValidatorLocal browser processing

Ready in your browser

Operation

Input · package.json

Result

Your processed result will appear here.

WHY USE IT

Start from a file

Import existing JavaScript, JSON or text and download the useful result.

Private browser processing

Your ordinary source and data are processed locally instead of submitted to our server.

Honest results

Safety limits and verification boundaries are stated clearly where they matter.

HOW IT WORKS

01
Add source or data
Type, paste or import the content you want to process.
02
Choose the operation
Select any relevant format, algorithm or display option.
03
Review and export
Copy the result or download it as a reusable file.