Data
Turn your JSON files into XLSX in seconds. Everything happens in your browser: nothing is uploaded to any server.
Drag your files here
Or paste them with Ctrl+V. They never leave your device.
For a person, a table in JSON is harder to read than a spreadsheet. As XLSX you open it in Excel with its columns and sheets.
JSON is the data format of APIs and web apps: nested lists and objects as text.
Strengths: Every programming language reads it and it is easy to validate.
Limits: For a person, a table in JSON is harder to read than a spreadsheet.
XLSX is the Microsoft Excel format: a workbook with one or more sheets, data types and formatting.
Strengths: It is what almost any office expects.
Limits: Other apps and databases usually ask for CSV to import data.
No. The JSON to XLSX conversion runs entirely in your browser, with code downloaded from this site and executed on your device. You can check it in the Network tab of the developer tools or by going offline after the page loads.
One that is a list of records, like [{"name": "Ana"}, {"name": "Luis"}]: each record becomes a row and each field a column. If the data is not table-shaped, you are told.
Up to 1 GB on desktop and about 200 MB on mobile, although a huge spreadsheet may take a few seconds.
Yes. Drop as many JSON files as you like: several are converted at the same time, depending on your processor cores, and when they finish you can download each XLSX or all of them in a ZIP.