How are nested objects handled?

With flattening on, {"author": {"name": "Ana"}} becomes a column named author.name. Arrays are written as JSON text in a single cell.

Will Excel open the file correctly?

Yes. The download starts with a UTF-8 byte order mark so Excel reads accented and non-Latin characters correctly.

Everything runs in your browser. Nothing you paste or open is uploaded.

SANDBASE TOOLS

Paste a JSON array of objects, or an API response that contains one, and download it as CSV for Excel, Google Sheets or a database import.

RUNS IN YOUR BROWSERNOTHING UPLOADEDNO WATERMARK

Flatten nested fields

JSON

2 rows · 4 columns

id	title	author.name	likes
1	Launch post	Ana	120
2	Weekly recap	Ben	87

Step 1: Paste JSON. If the array sits inside an object, the first array found is used.
Step 2: Choose the delimiter and whether nested objects become dotted columns such as author.name.
Step 3: Preview the table and download the CSV.

How are nested objects handled?: With flattening on, {"author": {"name": "Ana"}} becomes a column named author.name. Arrays are written as JSON text in a single cell.
Will Excel open the file correctly?: Yes. The download starts with a UTF-8 byte order mark so Excel reads accented and non-Latin characters correctly.
Is my data uploaded?: Everything runs in your browser. Nothing you paste or open is uploaded.