Programs for viewing and editing JSON files

The .JSON format is usually used as part of Ajax-based websites. In XML, it is becoming increasingly popular. The .JSON file extension refers to the JavaScript object file types. Json offers an alternative approach to data access. To open and edit files with this extension, you must use special editors, the most popular and functional of which are described below.

Available ways to open a file with the extension JSON.

What is File Extension JSON?

The .JSON file format is the core element of Java, its main functions are the standard organization of information exchange, used for recording using simple information and content structures. The json format description uses an easy way to write based on the content and clear layout. The technology, originally dependent on a subset of JavaScript, is now considered a standard, so this type of file is used much more often.

How to open JSON file

It uses the concept of merging key values ​​with a data structure. Its popularity and accessibility is also due to the widely used method of data exchange in Javascript. To open for viewing or editing files in this format, you must use a third-party application. Below is a list of the most popular and functional programs with which you can easily open any file with a .JSON extension on your computer.

Altova XMLSpy

Altova XMLSpy is an effective and powerful utility, editing tool and integrated development environment (IDE) for XML files (Extensible Markup Language). It can be used to model, transform, and debug XML-based software. The main advantage of the program is the support of the .JSON extension. The software includes all the necessary tools for working with applications that use XML, XML Schema XSLT and XQuery. When starting the program, a blank main screen is visible, but there is a collection of demo files for evaluating the functionality. Includes expense reports, XML portable forms, SPS projects, purchase orders, XBRL examples, EPUB examples, XQuery sets, and HTML5 files.

XMLSpy can work with databases created by Microsoft SQL Server, PostgreSQL, Oracle, MySQL, IBM DB2, Informix, Sybase and Microsoft Access. Among the functions, there is an XPath score, which defines an error constraint for validating the XML Schema, a DTD (document type definition) conversion, and the optimization of very large files. The application interface is intuitive, and for use in the current project, you can easily select the necessary tools. Frequently used parameters (transformation, spell check, etc.) are available in quick access mode on the main screen.

In the Tools menu, users can access the script editor, as well as the utility for comparing folders. It is possible to add quick access to tools that are already installed in the system. Altova XMLSpy can be the optimal solution for creating and processing XML data. By providing a set of all the necessary tools to work, the utility should help users improve productivity.

Notepad ++

Notepad ++ is a free and very popular text editor that offers the ability to create and modify source code, as well as view and edit files with the JSON extension. This is a great replacement for a notebook embedded in the system. It is effective both in writing plain text and in programming. Notepad ++ features include WYSIWYG support, automatic completion of code content, syntax highlighting, macro recording and playback, as well as viewing and modifying any text or source code in Multi-View mode.

Notepad ++ is written in C ++ and uses only the API and STL Win32, which ensures fast operation and a smaller program size. According to the manufacturers, Notepad ++ is designed to reduce global carbon dioxide emissions by optimizing as many procedures as possible without additional load on the system. The program uses less CPU power, so the computer can reduce power consumption, resulting in less environmental pollution. The program is free not only at home, but also for commercial use. It does not display ads or offers to donate. After installation, you will need about 10 MB (with a built-in FTP client and an ASCII-HEX converter), and with 15 editable text files, no more than 4 MB of RAM is used. Of course, the amount of memory consumed depends on the number and size of open files.

Notepad ++ processes several files in separate tabs. It is worth noting that the color indicates which open files were not saved (red floppy). Thanks to the support of dozens of languages, creating and editing scripts has become much easier (PHP, C #, html, java, PowerShell, etc.). Moreover, you can create your own definitions and colors of keywords. The program not only allows you to manage all functions using the keyboard shortcut, but also allows you to create your own combinations.

If you are looking for information about a phrase, select it and use the ALT + F2 combination or choose RUN> GOOGLE SEARCH to find it on GOOGLE. Notepad ++ allows you to test the code in any popular browser - use the keyboard shortcut or the “Run / Run” menu option. Notepad ++ allows you to convert text files into many different versions of code, which will be especially useful for people who create websites or web applications. The "Plugins" tab has a plug-in manager that allows you to install an NppFTP FTP client that will quickly and efficiently replace files, for example, on a web server. You can install one of dozens of add-ons. There are such universal tools as a language translator, voice pronunciation and “NppExec”, which allows you to immediately run the script without leaving the application.


This program combines the speed, small size and performance of a regular text editor. The utility extends the functionality of such parameters as text editing in one or in several windows, easily displays symbols of all Unicode systems, as well as any other encoding systems installed in the system. An additional advantage of the editor is the support function for viewing JSON files. The software displays characters used in Unix and Mac formats. In addition, the user can use the program preview, view the graphs contained in open files, or use tables. Unlike a regular notebook, AkelPad offers the option of editing undo and extremely fast search and replacement of text fragments.

Main functions:

  • single window mode or multi-window editor;
  • almost unlimited file size;
  • UTF-8 support;
  • undo / redo;
  • quick search;
  • print;
  • support for language modules.

The interface is similar to Notepad - the program can be installed in parallel with a regular text editor or as its replacement.

Komodo edit

Komodo Edit is a multiplatform text editor for programmers and webmasters. Provides support for the most popular languages. Versions are available for Windows, Mac OS X and Linux. The latest edition of the program provides synchronization of several workstations, collaboration in real time, support for a large number of languages ​​(and improvements to existing ones), and overall performance improvements.

In addition, you can edit and create CSS style files and HTML documents. The software provides a large number of functions, including code auto-completion, syntax checking, syntax coloring, support for persistent functions, a macro recording module, shortcuts for reading JSON files, and so on. Added Go language support. The hint system was changed, which is now displayed as a separate window, and the Komodo color scheme is changed to Base16 by default. The main toolbar with tools is hidden by default, but you can restore it permanently.

Sublime text

Sublime Text is a functional editor for programmers, and many consider it the best program in its class. It contains many interesting and unique solutions that make it a very effective tool for programmers. It has a powerful API based on the Python language, so it can be expanded with the help of new functions. The most interesting features of the program Sublime Text:

  • fast navigation - the program allows you to quickly navigate through files, characters, lines or words;
  • multiple choice - thanks to this, you can make several changes at once, such as a change in several lines, a massive change of variable names;
  • command palette - Sublime Text has a palette of commands in which there are rarely used commands, such as sorting, changing syntax, indents, and so on;
  • full-screen mode - the program allows you to increase the area with the code to the full screen, so you can fully concentrate on writing code. You can return to the standard tabbed interface and menu at any time;
  • Split Edition - the editor uses the capabilities of widescreen or multiple monitors simultaneously and allows you to simultaneously edit 2 files;
  • fast project switching - projects in the program save all the contents of the workspace, including files that have been changed but not manually saved;
  • Plug-in API - supports powerful Python-based API, so you can create your own plug-ins;
  • full configuration - display of keys, menus, fragments, macros, autocomplete - everything can be freely configured in simple files in JSON format;
  • Multi-platform - the program is available for Windows, Max OS X and Linux in 32-bit and 64-bit versions, and for Windows there is also a portable version.


NFOPad is a small free NFO and JSON file viewer with a built-in text editor. NFO files are text documents, often equipped with ASCII, that contain the necessary information about the programs. NFOPad is an application modeled on a standard Notepad, but much more extensive and containing additional functions. The program fully supports Unicode encoding and detects hyperlinks and email addresses. The application is easily customizable, here you can install the font ANSI or ASCII, as well as choose the color. Allows you to print and search for text, set the width of the screen. Software supports drag and drop. It is worth noting that the NFOPad application will be useful when editing help files.


Windows Notepad is a standard application built into the operating system. In addition to the basic functions, the program is distinguished by the ability to view and edit JSON files. To open the application in Windows, simply click Start (or the Win key) and enter Notepad.

What else can cause problems with the file?

Failure to open and work with a JSON file does not necessarily mean that the appropriate software is not installed on your computer. There may be other problems that also interfere with working with files. Below is a list of possible problems.

  • JSON file corruption.
  • Incorrect JSON file references in registry entries.
  • Accidental deletion of the description of the JSON from the Windows registry.
  • Incomplete installation of an application that supports JSON.
  • An open JSON file is infected with unwanted and malicious software.
  • The computer does not have enough hardware resources to cope with the opening of the JSON file.
  • Computer hardware drivers used to open a JSON file are out of date.

Did you download and install one of the programs correctly, and the problem with the JSON file still occurs? If none of the examples fit your problem description, then most likely the computer is infected with a serious virus and you may need to reinstall Windows.