JSON unflatten dot keys

Client

Reverse dot-flattened configs before validation or pretty-print.

Learn more: unflattening

Root must be a flat object; segments split on dots to rebuild nesting.

Local processing

Parsing and output formatting run entirely in your browser—nothing is uploaded for this transform.

Input

?
Paste JSON, then read transformed output below.

Nearby workflows on Toolcore

  • JSON flatten to dot keys — Flatten nested JSON into dot-path keys such as user. once JSON text parses on this page.
  • .env lines → JSON — Parse KEY=value text into nested JSON—dot keys, coercion, local only. once JSON text parses on this page.
  • JSON formatter — JSON format online: pretty-print, minify, validate, escape, download . once JSON text parses on this page.
  • JSON repair — Fix almost-JSON to strict JSON—trailing commas and common mistakes, local only. once JSON text parses on this page.

Common use cases

  • Reverse dot-flattened configs before validation or pretty-print.

Common mistakes to avoid

  • Invalid JSON

    Fix parse errors before expecting output.

FAQ

Is data uploaded?

No—all parsing and transforms run locally.

How is this different from jq?

This page focuses on one deterministic task without a filter language.

More tools

Related utilities you can open in another tab—mostly client-side.