BT Browser Tool LabFiles · Printables · Calculators
{}
Free browser utility

JSON Formatter and Validator

Errors include the parser message and an approximate character location where available.

✓ Local processing✓ No registration✓ No file upload
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Before
{"name":"FileFixer","private":true}
→
After
{\n  "name": "FileFixer",\n  "private": true\n}

How to use JSON Formatter and Validator

  1. Paste text or select local files in the tool area.
  2. Choose any options that match the source data.
  3. Run the conversion or repair and review the preview.
  4. Copy the result or download the generated file.

Privacy and local processing

This project performs processing, document generation or calculations in your browser. The page does not include an upload endpoint, analytics script or remote processing API call. Avoid pasting sensitive data into websites you do not control.

Frequently asked questions

Is my JSON uploaded?

No. Parsing and formatting happen entirely in your browser.

Can it minify JSON?

Yes. Use the Minify action after entering valid JSON.

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