How to use JSON Unflatten

Rebuild nested objects and arrays from path-based JSON keys.

1. Paste, type, or drag and drop a supported text file into the input area.
2. Choose the options that match your intended result.
3. Select “Run tool” or press Ctrl/Command + Enter, then copy, download, or move the result back into the first input for another pass.

What the result means

A reconstructed nested JSON value.

Privacy and safety

This utility is loaded as browser code and processes your input only in this tab. OmniCastConverter has no upload endpoint and never stores your content, filenames, tokens, or secrets. Generated markup and code are shown as inert text and are never executed.

Limitations

• Conflicting paths such as “a” and “a.b” are rejected.

Try the included example

Select “Load example” at any time to restore this tested sample.

{"user.name":"Ada","user.tags.0":"math","user.tags.1":"code"}