What is JSON array merging?

JSON array merging is the process of combining two or more JSON arrays into a single unified array. This operation is fundamental in data processing when you need to consolidate data from multiple sources, combine API responses, or aggregate datasets. Merging can be done in different ways: simple concatenation (preserving all elements including duplicates) or intelligent merging (keeping only unique elements).

Tool description

A practical JSON array manipulation tool that combines and merges multiple JSON arrays into a single array. This JSON array merger offers two merging modes: concatenate mode that preserves all elements from both arrays, and unique elements mode that removes duplicates to create a clean, deduplicated result. The tool validates JSON syntax, handles arrays of any size, and provides real-time merging as you input or modify your data.

Features

  • Dual Merge Modes: Choose between concatenation (keeps all elements) or unique elements only (removes duplicates)
  • Real-time Merging: Automatically combines arrays as you type or paste JSON data
  • JSON Validation: Validates that both inputs are properly formatted JSON arrays
  • Syntax Highlighting: Advanced JSON editor with syntax highlighting for easy reading and editing
  • Duplicate Removal: Intelligent duplicate detection that works with all data types (strings, numbers, objects, arrays)
  • Error Handling: Clear error messages for invalid JSON or non-array inputs
  • Large Array Support: Efficiently handles large arrays with thousands of elements
  • Preserves Data Types: Maintains all original data types during the merge operation
  • Empty Array Handling: Works correctly even when one or both arrays are empty

Use Cases

  • API Data Consolidation: Merge results from multiple API calls into a single dataset
  • Database Operations: Combine query results from different database tables or sources
  • Data Migration: Merge datasets during data migration or system integration projects
  • Testing and Development: Create test datasets by combining sample data arrays
  • Data Deduplication: Remove duplicate entries when merging arrays from different sources
  • Configuration Management: Combine configuration arrays from multiple environment files
  • Report Generation: Merge data arrays for comprehensive reports and analytics
  • Batch Processing: Consolidate results from parallel or batch processing operations