Data Converters

JSON Unflattener Online

Use JSON Unflattener to expand dotted JSON paths into nested objects. The conversion runs in your browser and produces nested JSON without uploading your data.

Runs entirely in your browser No account needed Copy or download result
JSON (flat) JSON (nested)
Paste JSON (flat) below, or drop a file

Converted entirely in your browser — your data never leaves your device

How to use it

  1. 1 Paste your source data into the input panel or load a local text file when available.
  2. 2 Adjust any visible conversion settings, such as a table name or interface name.
  3. 3 Run the converter in your browser.
  4. 4 Review the output, then copy or download the result.

Use cases

  • Move small datasets between developer-friendly formats
  • Prepare examples for docs, tests, migrations, or config files
  • Inspect structured data without opening a spreadsheet or editor extension

Limitations

  • Numeric path segments become array positions when they follow an array-like path.
  • Very large files depend on browser memory and device performance.
  • Malformed or highly specialized data may need manual cleanup before or after conversion.

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FAQ

Does JSON Unflattener upload my data?

Your file or text is processed in your browser and is not uploaded.

What does JSON Unflattener output?

It outputs nested JSON. Numeric path segments become array positions when they follow an array-like path.

Should I review the result before using it?

Yes. Data formats vary, so always review generated output before using it in production, database, or publishing workflows.