JSON files are simple text files that can be opened in any text editor. Larger files can be quite confusing, so it is recommended to use a JSON editor.
JSON files are often used in Ajax applications as an alternative to XML files. Although JSON is mainly used by web applications, it is also used in other applications such as Mozilla Firefox, Google Chrome, Mozilla Thunderbird or Caliber.
Most often resolving problems with opening JSON files is very simple. Just install an appropriate program that supports such files. All of the listed programs support JSON files, but may vary in offered function and purpose. Some programs may be capable only of viewing contents of JSON files or offer file conversion options, but may not be capable of editing such files.
It is possible that although a compatible program has been installed on user’s system, it is not used by the system to open it. This may happen because no default application was associated with this type of files. To associate JSON files with given application, select "Open with" from drop-down menu (accessed by right-clicking on the file). Then select from the list the program or application you want to be used to open this type of file. If the Apple TextEdit applications is not on the list, select "Browse" option in order to manually locate the directory where Apple TextEdit has been installed.
Sometimes problems with opening JSON files may not lie with the application itself, but can arise due to other causes, such as: