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Free File & Data Tools

JSON Formatter & Validator

Validate, format, minify, and copy JSON entirely in the browser.

What this tool does

Make structured data readable and catch syntax errors quickly.

The formatter parses JSON locally and returns readable indentation, minified output, or a clear parse error.

It does not execute code, fetch remote references, or upload the pasted data.

Use the tool

Format and validate JSON

Paste JSON, choose indentation or minification, and copy the valid output.

Validate and format JSON

Parsing and formatting happen locally in this browser. Very large inputs may affect browser performance.

Formatted JSON

{
  "project": "Launch campaign",
  "status": "review",
  "assets": [
    "hero.jpg",
    "cutdown.mp4"
  ]
}

How to use it

Three quick steps

  1. 1Paste the JSON source.
  2. 2Resolve any displayed parse error.
  3. 3Choose formatting and copy the validated result.

Worked example

Review an asset manifest

Format one minified object containing project status and asset names.

Nested values become readable without changing the underlying data.

FAQ

Questions about the json formatter

Practical details about using the tool and understanding its result.

Keep working

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From one asset to the whole workflow

Keep structured project data clean before it enters the workflow.

Draftroom keeps projects, creative files, feedback, revisions, and approvals connected in one workspace.

See Draftroom with your project