JSON Splitter - Free Online Tool

Split Large JSON Arrays into Smaller, Manageable Chunks

Split large JSON arrays into smaller chunks with our free online JSON splitter. Perfect for processing large datasets, API responses, database exports, or any JSON array that's too big to handle at once. Choose to split by number of chunks or items per chunk, then download individual files or all chunks as a ZIP archive.

Key Features:

Use Cases:

No registration required. Start splitting your JSON arrays immediately. Our tool handles arrays of any size and automatically formats each chunk as valid JSON. Perfect for developers, data engineers, and anyone working with large JSON datasets who needs to split them into smaller, more manageable pieces.

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How to Use JSON Splitter - Step by Step Guide

Step 1

Input Your JSON Array

Start by providing your JSON array data. Whether you're splitting large API responses, processing database exports, or dividing large datasets, you have three convenient options:

Paste JSON array: Copy and paste your JSON array directly into the editor
Upload file: Click upload to select a .json or .txt file containing a JSON array
Use sample: Click "Sample" to load example data and explore the splitting features
Step 2

Choose Split Method

Select how you want to split your JSON array. The splitter supports two flexible methods for dividing arrays:

Number of chunks: Specify how many chunks you want (e.g., 5 chunks splits your array into 5 equal parts)
Items per chunk: Specify how many items each chunk should contain (e.g., 100 items per chunk)
Step 3

View Split Results

The tool automatically splits your JSON and displays the results. Each chunk is formatted as valid RFC-compliant JSON:

Navigate chunks: Click chunk buttons to preview each split
View item counts: See how many items are in each chunk
Validate format: Each chunk is properly formatted as valid JSON

Step 4: Download or Copy Chunks

Export your split JSON chunks using available options:

Download individual: Download the currently viewed chunk as a JSON file
Download all: Get all chunks in a single ZIP file for batch processing
Copy to clipboard: Quickly copy any chunk for immediate use

Step 5: Process Your Chunks

Use your split JSON chunks for various purposes. Format each chunk for better readability, or minify them before uploading to APIs. You can also validate each chunk separately.

Batch processing: Process each chunk separately for better performance
API uploads: Upload chunks one at a time to avoid timeout issues
Data migration: Import chunks incrementally into your database

Frequently Asked Questions

What does the JSON Splitter do?

The JSON Splitter divides large JSON arrays into smaller chunks based on your preferences. You can split by specifying the number of chunks you want or by setting how many items each chunk should contain. Each chunk is a valid, properly formatted JSON array.

Can I only split JSON arrays or objects too?

Currently, the tool only splits JSON arrays. If you have a single JSON object, you can wrap it in square brackets [ ] to create an array with one item, though splitting wouldn't be very useful in that case. The tool is designed for arrays with multiple items.

How do I download all chunks at once?

Click the "Download All" button to get all your chunks packaged in a single ZIP file. The ZIP will contain separate JSON files named chunk-1.json, chunk-2.json, etc. This is perfect for batch processing or when you need to work with all chunks together.

What's the difference between split methods?

"Number of chunks" divides your array into a specific number of equal (or nearly equal) parts. For example, 100 items split into 5 chunks gives you 20 items per chunk. "Items per chunk" ensures each chunk has exactly that many items (except possibly the last chunk). Use the first when you know how many files you want, and the second when you know the ideal chunk size.

Is there a limit on JSON array size?

The tool works entirely in your browser, so the limit depends on your device's memory. Most modern browsers can handle arrays with tens of thousands of items without issues. For extremely large files (millions of items), you may need to use command-line tools or server-side processing.