NDJSON to XLSX Converter - free, no upload

Convert NDJSON to XLSX

Log-shaped data into a spreadsheet, typed. The usual reason is that somebody who doesn't use a terminal needs to read it.

Drop NDJSON file(s) to start

or click to browse

Your files never leave your device · no magic required

What is NDJSON?

One JSON object per line, with no wrapping array. That small change is the whole point: a program can read a record at a time instead of parsing gigabytes into memory first, which is why log pipelines, bulk importers and search indexes all speak it.

What is XLSX?

A modern Excel workbook, which is really a zip full of XML. Unlike a CSV it knows what a number is, holds multiple sheets, and keeps formulas and formatting. It's what people mean when they say 'send me a spreadsheet'.