RESHAPE · EXTRACT · CONVERT

Transform JSON without leaving your browser.

Flatten or rebuild nested data, extract exact paths, rename keys, remove duplicates, and convert between JSON and CSV — with a preview before you copy or save anything.

Local processing only

Path separator

JSON Input

Source data to transform

JSON

Preview Output

Flattened JSON preview

JSON

0Input items

0Output items

0Changes

0Output chars

Preview firstThe source is never modified. Every operation writes into a separate preview pane.

Deterministic outputFlattening, renaming and dedupe use stable local rules so the same input and settings produce the same result.

CSV safetyQuoted commas, quotes and line breaks are handled locally; nested values can be preserved as JSON strings.