YggNexus

JSONFix

Free online JSON formatter and fixer.

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Json FormatterValidationMinificationFix Broken Json

Pricing: free — No signup required but limited functionality · Visit website

JSONFix is a free web tool that formats, validates, minifies, and fixes broken JSON input. Paste your JSON, click format, and get clean output instantly. The AI Fix feature uses Claude to repair common errors like missing commas, unquoted keys, trailing commas, single quotes, comments, and more.

Pros

  • Free to use
  • AI-powered error fixing
  • Supports various JSON issues

Cons

  • Limited features for advanced users
  • No signup required but limited functionality
  • May not handle extremely complex JSON

FAQ

Can I use it without signing up?

Yes, no signup is required.

Is the tool free forever?

Yes, it's completely free to use.

Does it support all types of JSON errors?

It handles common issues but may not cover all edge cases.

Last updated: 2026-06-21