Join Data to JSON Data

Join data to your JSON data quickly

Drop your JSON (.json) file here (or click to browse).
(100 MB or less file)
Sign-up to upload larger files
Join Data Tools JSON Tools
Convert JSON using an API
Join Data

Joining brings your JSON file together with a second dataset by matching rows on the columns you choose, so related data ends up in one table. Pick an Inner, Left, Right, or Full join to decide which rows are kept when a match is missing. Perfect for enriching records, adding reference or lookup data.

JSON

JSON (JavaScript Object Notation) is a lightweight, text-based format used for data interchange. JSON is easy to read and write for humans and simple to parse and generate for machines. Its structure is composed of two elements: objects, containing key-value pairs, and arrays, holding lists of values. Keys in JSON objects are strings, and values can be strings, numbers, arrays, true or false, null, and other objects. This format is widely used in web applications for sending data between clients and servers, as well as in configuration files and data feeds.