JRJI
Privacy-first JSON toolkit

Broken JSON?
Fixed in a click.

JRJI is a fast, modern toolkit for fixing, validating, diffing and converting JSON — all running 100% in your browser. Nothing is uploaded, ever.

Try the JSON Fixer Compare JSON
Privacy-first · No upload · 100% client-side
Live preview Repaired 
// before: trailing comma + unquoted key
{
  name: "jrji",
  tools: ["fixer", "diff",],
}

// after: valid JSON
{
  "name": "jrji",
  "tools": ["fixer", "diff"]
}
10
Focused JSON tools
100%
Runs in your browser
0
Bytes uploaded to a server

Everything JSON, in one place

Ten focused tools that cover the entire JSON workflow — each one instant and private.

Popular

JSON Fixer

Repair broken, malformed JSON with one click. Trailing commas, unquoted keys, single quotes — fixed.

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JSON Minifier

Strip whitespace and comments to shrink payloads for APIs and storage.

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JSON Diff

Compare two JSON documents with a visual, color-coded diff.

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JSON Viewer

Explore JSON in a collapsible tree and query it with JSONPath.

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New

Schema Validator

Validate JSON against a draft-07 schema — or generate one from example data.

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JSON to CSV

Flatten JSON arrays into clean CSV for spreadsheets.

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CSV to JSON

Turn CSV exports into JSON arrays with delimiter detection and type inference.

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JSON ⇄ YAML

Convert between JSON and YAML in both directions.

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JSON ⇄ XML

Convert between JSON and XML, attributes included.

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JSON ⇄ TOML

Convert JSON config to TOML and back — TOML 1.0 compliant.

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Blog & Guides

Practical JSON tips, API patterns, and tool deep-dives.

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Private by design

No servers, no tracking, no uploads. Your data stays on your machine.

Instant & lightweight

Pure client-side logic means results in milliseconds, even on huge files.

Developer-first

Clean output, keyboard-friendly, and built for the way you actually work.

Frequently asked

Is my data uploaded anywhere?

No. Every tool runs entirely in your browser using JavaScript. Your JSON never leaves the device — we never see it.

Do I need an account?

No account, no sign-up. Open a tool and paste your JSON.

Which JSON problems can the Fixer handle?

Trailing commas, unquoted object keys, single quotes, JavaScript-style comments, and some brace/paren mismatches. It is a best-effort repair, not a full parser.

Is it free?

Yes. JRJI is a free, privacy-first toolkit.

Start fixing JSON in seconds

No install, no account. Paste your JSON and let JRJI clean it up.

Open the JSON Fixer