Toolram

JSON formatter

Validate, format and minify JSON with error highlighting.

About JSON formatter

Paste JSON and get a formatted version with indentation, error validation with exact line, and minify option. Supports large JSON (>1MB). 100% local processing.

Why use Toolram

  • 🔒 100% private
    Your data never leaves your browser.
  • ⚡ No waiting
    Instant results, no uploads.
  • 📱 Works on mobile
    Optimized responsive design.
  • 🎁 Forever free
    No signup, no watermark.

Frequently asked questions

What happens if my JSON is invalid?

It tells you where the problem is instead of failing silently, so you can jump straight to the line with the missing comma or bracket.

Can I minify as well as prettify?

Yes. You can indent it for reading or strip every space for production, both ways.

Is my JSON sent anywhere?

No. It is parsed in your browser, which matters when the file contains API keys or customer data.

🇲🇽 También disponible en español