JSON files are plain text, so you can open them in any text editor

A JSON file is a text file that stores data in a structured format. You do not need special software to read it — any program that opens text will work. On Windows, that means Notepad. On Mac, that means TextEdit. On Linux, that means gedit or nano. The file will display as readable text with curly brackets, square brackets, and quoted words.

JSON stands for JavaScript Object Notation. It is a way to organize information so that computers and humans can both understand it. When you open a JSON file in a text editor, you will see the raw data exactly as it was saved — no formatting, no hidden layers, just the text itself.

Key Takeaways

  • Right-click any JSON file, choose "Open with", and select Notepad (Windows) or TextEdit (Mac) to view the contents immediately.
  • If the text appears jumbled or hard to read, use a code editor like Visual Studio Code or Sublime Text, which automatically formats JSON to make it clearer.
  • JSON files are plain text, so they contain no viruses or executable code — opening one in a text editor is safe.
  • If you need to edit a JSON file, save it with the .json extension so programs recognize it as JSON rather than plain text.

Opening a JSON file in Notepad or TextEdit

On Windows, right-click the JSON file. Select "Open with" and then "Notepad". The file will open immediately and display all the text inside. If Notepad does not appear in the menu, click "Choose another app" and scroll down to find it.

On Mac, right-click the JSON file (or Control-click if you have a single-button mouse). Select "Open With" and then "TextEdit". The file will open in TextEdit, which is the Mac equivalent of Notepad. The text will be readable but may not be formatted in a way that makes the structure obvious.

On Linux, right-click the JSON file and select "Open With". Choose gedit, nano, or whatever text editor your system has by default. The file will open in a terminal window or graphical editor depending on which one you pick.

Using a code editor to make JSON easier to read

If the JSON file is large or complex, a code editor will format it automatically so the structure is clear. Visual Studio Code is free, works on Windows, Mac, and Linux, and highlights JSON syntax with colors so you can spot the structure at a glance. Sublime Text is another option that does the same thing. Both are designed for reading and editing code, but they work perfectly for JSON files.

Download Visual Studio Code from code.visualstudio.com. Install it, then right-click a JSON file and select "Open With Code". The file will open with automatic formatting — indentation, color highlighting, and line numbers. If the JSON is not formatted neatly, go to the Edit menu, select Format Document, and it will align everything automatically.

Sublime Text works the same way. Download it from sublimetext.com, install it, and open JSON files the same way. Both editors are free to download and use indefinitely, though Sublime Text will occasionally ask you to purchase a license (you can ignore this and keep using it).

What you will see when you open a JSON file

JSON data is organized in pairs. You will see text like "name": "John" or "age": 30. The word before the colon is the label (called a key), and the word after is the value. Multiple pairs are separated by commas and grouped inside curly brackets { }. Lists of items are grouped inside square brackets [ ].

Here is a simple example of what a JSON file looks like:

{ "name": "John", "age": 30, "city": "New York", "hobbies": ["reading", "gaming", "cooking"] }

In this example, "name", "age", "city", and "hobbies" are the keys. "John", 30, "New York", and the list of hobbies are the values. When you open a JSON file, you will see this same pattern repeated — keys and values organized in a structure that makes sense to the program that created the file.

Opening JSON files from websites and downloads

If you downloaded a JSON file from a website or received one in an email, it works the same way. Right-click it and open it with Notepad, TextEdit, or a code editor. If your computer does not recognize the .json extension, Windows or Mac may try to open it with the wrong program. If that happens, right-click again, select "Open With", and manually choose a text editor.

Some websites let you view JSON directly in your web browser without downloading. If you paste a JSON file's web address into your browser's address bar, the browser may display the JSON as formatted text. This is safe — you are just viewing text in your browser, the same way you would view any webpage.

Editing and saving a JSON file

If you need to change something in a JSON file, open it in Notepad, TextEdit, or a code editor, make your changes, and save the file. Make sure you save it with the .json extension at the end of the filename — for example, data.json rather than just data. If you save it without the extension, your computer may not recognize it as a JSON file the next time you try to open it.

Be careful when editing JSON. The structure matters — if you delete a curly bracket or square bracket by accident, the file may stop working. If you are not sure what you are doing, make a copy of the file first, edit the copy, and keep the original safe.

Frequently Asked Questions

Is it safe to open a JSON file?

Yes. JSON files are plain text and contain no executable code. They cannot run programs or install anything on your computer. Opening one in a text editor is completely safe.

Why does my JSON file look messy when I open it?

Notepad and TextEdit do not format JSON automatically. If the file has no line breaks, it will appear as one long line. Use Visual Studio Code or Sublime Text instead — they format JSON automatically so you can see the structure clearly.

Can I open a JSON file on my phone?

Yes. On Android, use an app like Quickedit or Jota Text Editor. On iPhone, use an app like TextEdit or Kodex. Search your phone's app store for "JSON viewer" or "text editor" to find options.

What if the JSON file will not open?

The file may be corrupted or the extension may be wrong. Try renaming it to add .json at the end if it does not have one. If it still will not open, try opening it with a different text editor. If none of those work, the file itself may be damaged.

Do I need to understand JSON to read a file?

No. You can open and read a JSON file without understanding the format. The text is human-readable — you will see words and numbers organized in a logical way. Understanding the structure helps, but is not required to view the contents.