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6 JSON tools · 1 coming soon

Master your JSON.
Faster than ever.

Format, validate, minify, and convert JSON — all in one place. Instant, private, and free. No signup, no uploads, no waiting.

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✓ 100% in-browser✓ Free forever✓ Trusted by 10,000+ devs
JSON Preview
Valid
{
"name": "TEO ToolKit",
"tools": [
"formatter",
"validator",
"minifier"
],
"ready": true
}
248 bytesFormatted in 2ms

THE TOOLKIT

6 JSON tools. Zero friction.

Every tool you need — and nothing you don't. All free, all instant.

Popular

JSON Formatter

Beautify and pretty-print JSON instantly.

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JSON Validator

Catch syntax errors and validate your JSON structure.

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JSON Minifier

Strip whitespace for smaller, production-ready payloads.

Open tool

JSON to CSV

Convert JSON data to a clean, spreadsheet-ready CSV.

Open tool

JSON to YAML

Convert JSON to YAML and back again in one click.

Open tool

JSON to XML

Convert JSON to XML and back, without losing your data.

Open tool

Why TEO ToolKit

Built for developers who live in JSON.

Speed, privacy, and precision — no account required.

Instant

Every tool runs in your browser — no round trips to a server. Format 1MB JSON in under 50ms.

Private by default

Your JSON never leaves your device. No uploads, no logs, no tracking. Just you and your data.

Precise errors

Every error has an exact line and column. Jump straight to the fix — no guessing.

Free forever

All core JSON tools are 100% free. No paywalls, no trials, no upgrade to export.

TRY IT

See it in action.

Paste messy JSON — get clean output instantly.

JSON Formatter
Input✓ JSON ready
65 chars · Edit the sample JSON
Output✓ Formatted in 2ms
{
  "name": "TEO ToolKit",
  "tools": [
    "json",
    "csv",
    "yaml"
  ],
  "ready": true
}
96 chars · Ready to use
Open JSON Formatter

Powered by TEO ToolKit · Your data stays on your device

IN THE WORKS

More JSON tools coming soon

We're building more. Have an idea? Request a tool.

Soon

Object to JSON

Convert Object to JSON and back again in one click.

Notify me
Your idea here Request a new JSON tool

WHY DEVELOPERS CHOOSE TEO ToolKit

The JSON toolkit that just works.

Speed⚡ Browser-native🐢 Server round-trip
Privacy🔒 100% local📤 Uploads files
Signup required✕ No✓ Often
Free tier✓ Unlimited⚠ Limited
Error precision✓ Line + column✕ Vague
Batch support✓ Coming⚠ Paid

Explore more from TEO ToolKit

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GOOD TO KNOW

Frequently asked questions.

YOUR NEXT JSON FIX IS ONE CLICK AWAY

Ready to master your JSON?

Start with the formatter. No account needed.

Open JSON Formatter

✓ Free forever · ✓ No signup · ✓ 100% private