Validate a JSON Config

A single stray comma in package.json or a config file can fail a whole build pipeline. Validate first and get the exact line and column of the error.

  1. Paste the JSON you are about to commit.
  2. Run the validator — it parses strictly and reports position information.
  3. Fix the reported location and re-validate until it passes.

Uitvoeren

Voorbeelden

Invoer

{"name":"26173","tools":["base64","uuid"],"count":256,"nested":{"ok":true}}

Uitvoer

✅ Valid JSON.

The output above was produced by actually running this tool.

FAQ

Is my data uploaded for "Validate a JSON Config"?

No. The tool runs entirely in your browser — nothing is sent to any server.

Is it free?

Yes — unlimited, no sign-up, no installation.

Which tool does this use?

The JSON Validator on 26173, linked at the bottom of this page.

Tools

JSON-ValidatorCheck JSON syntax and pinpoint the exact error position.JSON formatter &verfraaierPretty-print JSON with configurable indentation.JSON-MinifierStrip whitespace to compress JSON payloads.JSON TekenreeksescaperEscape a string for embedding inside a JSON document.