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How to Combine Multiple JSON Files into One? 4 Quick Ways

author
Published By Raj Kumar
Anuraag Singh
Approved By Anuraag Singh
Published On January 22nd, 2026
Reading Time 8 Minutes Reading
Category JSON

If you are working with numerous JSON files and want to manage complex data more efficiently. In this situation, combining them into one file is the best solution. To combine multiple JSON files into one, you can use manual methods, such as a text editor, Python scripts, or approach for dedicated automated solutions for handling structured data effortlessly. In this blog, we will explore 4 different techniques to combine multiple JSON files into a single file quickly. These methods will help you to manage nested and raw JSON data while maintaining file structure. So, let’s start with the discussion.

Common Reasons to Combine Multiple JSON Files into One File

Handling various JSON files separately can make data complex. So, combining JSON files helps users to streamline the workflow and improve the entire data usability across different platforms. Here are the main reasons to do the task:

  • Easy Data Management: An individual file is simpler to organize and maintain data. It helps to eliminate clutter and improve consistency.
  • Simplified Data Analysis: When all information is arranged in a single JSON file, it allows users to process and analyze structured data efficiently.
  • Quick Sharing & Storage: A combined JSON file is easy to manage and share with clients or platforms. It also stores and backup data easily.
  • Faster Access: You can simply access all file data in one place. This helps users to reduce risk of file corruption and errors.
  • Compatible with Applications: Several applications require a single JSON file. Combining multiple JSON files into one file ensures smooth export and import of data.

Overall, combining multiple JSON files into single one not only saves time and effort, but also ensures easy data handling. It is helpful for users working with large datasets.

Quick Suggestion to Combine JSON Files into One File

If you are frequently dealing with multiple JSON files and need a quick solution to combine them. Here is a professional SysTools JSON Merger Tool that can merge JSON files into a single file while maintaining data accuracy. This advanced software can work with both complex and nested JSON structures in a hassle-free way.

This robust software provides different featent features which are more powerful solutions. It is a dedicated tool to manage raw data and handle large files effortlessly. It works completely offline and finishes the task within just a few clicks. Using this software, users can combine data on both Windows and macOS.

How to Combine Multiple JSON Files into One? 4 Effective Methods

Here, we reach the section. If you are seeking how to combine JSON files into a single document, follow the guidance below. By following these techniques, you can manage deeply nested, raw, and complex JSON files seamlessly. Moreover, these methods are secure and reliable. Here are the top 5 ways to combine .json files instantly:

  1. Use a Text Editor to Combine JSON Files
  2. Create a Python Script for making one file.
  3. Use an Automated Solution for combining JSON files.
  4. Try Online tools for merging small JSON files.

Now, let’s dive into these solutions and make data easier to read, share, edit, and analyze without facing any challenges.

#1 Use Text Editor ( Best for Small Files)

If you have small datasets of JSON, a text editor is an easy and simple method to consolidate all data in a single file. This solution is suitable for those users who deal with simple structures and minimal nesting. Here are the steps to use this method:

  1. Open JSON file in text editor like Sublime Text.
  2. Copy the content of file and paste it.
  3. Adjust the structure to maintain formatting.
  4. Save the new file with a different name.
PROS:

  • No need to install third-party software.
  • Easily handle small JSON files.
  • Suitable for beginners to combine files.
CONS:

  • It is time-consuming to combine multiple JSON files.
  • Higher risk of data loss and formatting errors.
  • Suitable only for beginners.

#2 Use Python Script to Join JSON Files

Many users are familiar with coding languages and need a fast solution to create a single JSON file. So, Python script is the best solution for developers who can generate scripts. This technique works well for medium to large files. Follow the steps given below:

  1. Launch Python on your PC.
  2. Generate a Python Script and upload .json files.
  3. Read files from the folder using a loop.
  4. Lastly, write the combined data to a new file.
PROS:

  • Handle complex JSON datasets quickly.
  • Automates same task for various files.
  • Maintains structure of JSON file accurately.
CONS:

  • Always requires technical knowledge.
  • Suitable only for developers or non-technical users.
  • Users need to create scripts that increase risk of data loss.

#3 Combine Multiple JSON Files into One – Powerful Solution

If you are working with large, complex, and nested JSON files, manual techniques can be time-consuming and prone to errors. So, use the mentioned advanced solution that combines numerous JSON files into individual, well-structured file with just a few clicks. This is a reliable software that preserve original folder structure and makes the entire process seamless. In this method, we’ll explain its features and steps. So, let’s begin with a discussion.

Top Features of Using Automated Solution

  • The tool manages both complex and nested JSON files in batch mode.
  • It allows users to open large JSON file while maintaining formatting.
  • The software is an offline solution and does not requires internet connection.
  • Support all types of raw JSON files without facing compatibility issues.
  • Provide full control over the data and combine JSON files one by one.

Simple Steps to Join Multiple JSON Files into Single File

  1. Download & install the tool and select “Merge JSON” option.
    download and choose merge json
  2. Browse and upload JSON files using “Add Files & Folders”.
    add file and folder
  3. Choose the primary file > Destination Path > Merge button.
    choose primary file, destination path, and merge button
  4. A pop-up will appear, click on OK button.
    click on the ok button
  5. Finally, tap on View Report to see output file.
    tap on view report

#4 Try Online Tools for Combining JSON Files

There are several free online websites available to combine multiple JSON files into one. Using these platforms, users can handle small datasets with minimal nesting and complexity. These online tools provide a simplified interface for effortless management of .json files. Below are the steps for using free tools:

  1. Visit a free online website.
  2. Upload all JSON files you need to join.
  3. Preview the added files before running the process.
  4. Download the individual JSON file.

PROS:

  • No installation and technical expertise required.
  • Quickly combine small JSON files.
  • Accessible from anywhere with a stable internet connection.

CONS:

  • Do not handle large and multiple files.
  • May not work with complex and nested structures.
  • No security towards sensitive data.

Why Choose Offline Solution Over Online Tools?

Working with multiple JSON files can be challenging, so choosing the right tool is important for efficiency and accuracy. Online tools are free to use and complete tasks quickly, but always come with some limitations. Offline tools provide accurate results, advanced features, and full control over the data. Offline solutions stand out as one of the secure ways to combine multiple JSON files into one.

Benefits of Using Automated Solution

  • Advanced tools work offline and offer 100% security.
  • It eliminates the risk of data loss and reduces errors.
  • Provide 24*7 technical support to help users.
  • Handle complex and deeply nested JSON files.
  • Completes the entire process within a few minutes.

So, use online tools for completing basic tasks and choose offline tools for combining multiple JSON files into a single file more effectively. For professionals and businesses, specialized software works best and provides advanced features for smooth performance. So, select the methods that suit your needs and preferences.

Time to Wrap Up!

In the above guide, we have listed 4 best ways to understand how to combine multiple JSON files into one in a hassle-free way. By following these methods, you can easily join JSON files into single document. Instead of choosing manual solutions, we recommend you choose pro solution to securely combine JSON files and save both time & manul efforts.

 

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