JSON Flatten
Convert nested objects and arrays into a flat object keyed by readable paths. It helps inspect deep API payloads, prepare spreadsheet exports, and compare specific fields without expanding every level.
JSON Flatten
Flatten nested JSON into path-value pairs for logs, spreadsheets, and rule checks.
Nested JSON0 lines
Output0 lines
1Ready. Load an example or paste JSON to begin.Ready. Load an example or paste JSON to begin.
Parse summary
- Root
- -
- Keys
- -
- Depth
- -
- Size
- -
Type counts
strings -numbers -booleans -nulls -objects -arrays -
Structure preview
No valid JSON preview.
Data handling notes
- Nested object keys are joined with dots.
- Array positions are represented with bracket indexes such as items[0].
- Empty objects and arrays are preserved instead of disappearing from the output.
FAQ
Does it upload my JSON?No. Flattening runs in the browser only.
Can it unflatten JSON?Not in this version. This page focuses on flattening for inspection and mapping.