Flatten Nested JSON Without Writing Code
Turn deeply nested objects into flat, readable columns using dot-path flattening.
Nested objects are common in API responses but awkward in a spreadsheet. Dot-path flattening turns them into clean columns without any scripting.
How flattening works
Each nested object is unfolded into columns named by the path to each leaf value. For example customer.contact.email becomes a single column header, and the value lands in that cell.
Where flattening stops
Flattening recurses through plain objects until it reaches a primitive, null, or an array. Arrays are kept intact and written to a cell as a JSON string rather than expanded, so your row structure stays predictable.
Tips for clean tables
If a column is too deep to be useful, simplify the source JSON before converting. Consistent object shapes across rows produce the cleanest, most complete tables with the fewest empty cells.