Merge JSON Arrays combines multiple JSON arrays into one. The Merge JSON Arrays tool runs in your browser with live output, file import, copy, and export support.
How to Use:
Paste several JSON arrays into the Input JSON Arrays box. Each array should go on a new line, like this:
[1, 2, 3]
[4, 5]
[6, 7, 8]You can also upload a .json or .txt file using Choose File. As soon as you enter valid input, the Merge JSON Arrays tool parses each array and combines them into one. The result appears immediately in the Merged Output box.
Click Copy Output to copy the merged array to your clipboard. Select Export to File to save the output as a .json file. Use Clear All to remove everything and start fresh. The output area flashes when it updates and shows a live character count beneath.
What Merge JSON Arrays can do:
This tool takes multiple JSON arrays and merges them into one clean result. It flattens them without nesting, even if the arrays are different lengths. It works great with exported data, batch jobs, or any case where array elements arrive separately but need to be combined. Everything runs inside your browser, so your data stays private and fast to process.
Example:
Input:
["a", "b"]
["c"]
["d", "e", "f"]Output:
["a", "b", "c", "d", "e", "f"]Common Use Cases:
Merge JSON Arrays is perfect when you need to unify exported data, consolidate results from multiple tools, or build one list from multiple JSON lines. Whether you’re handling logs, form submissions, or structured records, this tool simplifies the task of putting them all together.
Useful Tools & Suggestions:
To prepare for merging, Create a Random JSON Array can be used to quickly test how different datasets come together. And if you need to compare results after the merge, Compare JSON Arrays gives a clear look at what’s been added or changed.