JSON Splitter
Split your JSON arrays into two files with field selection & renaming
JSON Input
Drag & drop or click to select one or more JSON files.
About JSON Splitter
What is JSON Splitter?
JSON Splitter is a powerful tool for refactoring and reorganizing JSON data. It allows you to split a JSON array into two separate files based on custom field selection and optional field renaming. Perfect for data migration, API response transformation, and database preparation.
Whether you're working with a single JSON file or processing multiple files with the same structure, JSON Splitter handles it all with an intuitive interface and real-time previews.
Key Features
- • Split JSON arrays into two customized files
- • Rename fields during the splitting process
- • Bulk process multiple JSON files at once
- • Automatic structure validation for batch uploads
- • Download results as individual files or ZIP archive
- • Handle missing fields with null value option
How to Use JSON Splitter
1 Upload or Paste JSON
Choose between two input methods:
- Upload Files: Drag & drop or click to select one or more JSON files (all files must have the same structure)
- Paste JSON: Copy and paste a JSON array directly into the textarea
2 Configure Field Mapping
After loading your JSON, the available fields will appear automatically. For each output file:
- Select fields: Choose which fields to include in each output file
- Rename fields: Optionally rename any field (e.g., "email" → "user_email")
- Requirement: Each file must have at least one field selected
3 Configure Advanced Options (Optional)
Fine-tune your output with these options:
- Keep missing fields as null: Include missing fields with null values for consistent structure
- Pretty-print output: Format JSON with proper indentation for readability
4 Split and Download
Click "Split JSON" to generate your output files. Then choose your download option:
- Download ZIP: Get both output files in a single ZIP archive
- Copy to Clipboard: Copy individual files for quick pasting
- For bulk uploads: Each input file generates its own pair of split files in the ZIP
Use Cases & Examples
User Data Export
Split user records into public data (id, name) and private data (id, email) for different systems or APIs.
Database Preparation
Organize data for import into multiple database tables with specific required fields.
API Response Optimization
Transform API responses into different formats for mobile and web clients with field renaming.
Bulk Data Processing
Process dozens of similarly-structured JSON files simultaneously with automatic validation.
Important Notes
- • Input validation: Your JSON must be a valid array of objects
- • Bulk upload structure: All uploaded files must have identical field names to proceed
- • Object order: The order of objects in your array is always preserved
- • Privacy: All processing happens in your browser - no data is sent to servers
- • File naming: Bulk uploads preserve original filenames (e.g., users.json → users-1.json, users-2.json)