How to open a JSON file on Windows 10 and 11
You can open a .json file on Windows 10 and 11 with Notepad or a web browser. No extra software needed. Depending on how the file was saved, it might look like a single, massive line of text or a clean, organized list.
JSON (JavaScript Object Notation) is a text format for storing data as name-value pairs and lists. Websites and apps use it to send data back and forth.
Method 1: Open a JSON file using Notepad
Because JSON files are plain text, you can open and edit them with the built-in Windows Notepad app.
- Open File Explorer.
- In File Explorer, go to the JSON file.
- Right-click the file, hover over Open with, and select Notepad. (If you don't see it, click Choose another app and select Notepad from the list).
- If you want all JSON files to open in Notepad automatically, click the Always button at the bottom of the window.

If you need a more advanced text editor, I recommend Notepad++. It is a free tool that adds color-coded text and auto-indentation, making long JSON files much easier to read.
Method 2: Open a JSON file in a web browser (Chrome, Edge, Firefox)
If your JSON file opens as one endless, messy line in Notepad, dragging it into a web browser is the easiest way to add spacing and collapsible sections without installing any extra tools.
- Open your preferred browser (Google Chrome, Microsoft Edge, or Mozilla Firefox).
- Drag your .json file from its folder and drop it directly into a blank browser tab.
- The browser reads the file and displays it with proper spacing and indentation. Note: In Microsoft Edge, check the "Pretty-print" box at the top if the text doesn't space out automatically.
People also ask (FAQ)
Why does my JSON file look like a huge block of messy text?
Many JSON files are "minified" to save space. This means all spaces, line breaks, and indentations are stripped out, cramming thousands of characters into a single line. Opening the file in a web browser or Notepad++ restores the readable layout.
Is it safe to open a .json file?
Yes. JSON files are strictly text data files used to store settings or transfer information. They do not contain any runnable code, so opening one in a text editor cannot run a virus or harm your computer.