Excellent JSON – Visual drag & drop Excel to nested JSON converter

Summary: Excellent JSON is a browser-based tool that converts Excel or CSV files into nested JSON structures using a visual drag & drop interface. It supports grouping fields, renaming output keys, and exporting as arrays or keyed hashes without uploading data.

What it does

It enables users to build infinitely nested JSON from spreadsheets by grouping and renaming fields visually, exporting results as arrays or keyed objects entirely within the browser.

Who it's for

Users needing to convert spreadsheets to complex JSON without coding or server uploads, such as developers or data analysts.

Why it matters

It eliminates the need for scripting or data uploads by providing a secure, code-free way to create nested JSON from Excel or CSV files.