How to View JSON Files: 5 Easy Ways (Online, Chrome & Notepad++)

Double-clicking a .json file usually does one of two unhelpful things: it downloads, or it opens as an unreadable wall of text. JSON is meant to be machine-readable first, so viewing it comfortably takes the right tool. Here are five reliable ways to view JSON files — from a paste-and-go online viewer to your code editor — with guidance on when to use each.

1. Use an online JSON viewer (fastest, no install)

The quickest way to view JSON online is a browser-based viewer. Copy the contents of your file, paste them into the JSON viewer, and press View JSON. You get a collapsible, color-coded tree you can expand branch by branch.

This works on any operating system — Windows, macOS, Linux — and on mobile, with nothing to install. Choose a viewer that processes JSON client-side (ours does) so your data never gets uploaded; that keeps API responses and secrets private.

Use it when: you want to inspect JSON immediately, on any machine, without setup.

2. Open JSON in the browser with a Chrome extension

If you regularly open JSON API endpoints directly in Chrome, a JSON viewer Chrome extension (like JSON Viewer Pro or JSON Viewer Awesome) auto-formats the response into a tree as soon as the page loads. No copy-paste needed.

Use it when: your workflow involves opening JSON URLs in the browser all day. The trade-off is an install and browser-specific behavior, plus the permissions the extension requests.

3. View JSON in Notepad++ (Windows)

On Windows, the Notepad++ JSON Viewer plugin adds a tree panel and a “Format JSON” command. Install it from Plugins → Plugins Admin, search for “JSON Viewer,” and restart. Then open your file and use the plugin menu to format and explore it.

Use it when: you are on Windows, work offline, and already use Notepad++.

4. View JSON in VS Code or another editor

Modern editors handle JSON well out of the box. In VS Code, open the file and press Shift+Alt+F (Format Document) to pretty-print it; use the breadcrumb bar and folding arrows in the gutter to collapse sections. Extensions add tree views and JSON Schema validation if you want more.

Use it when: the JSON lives alongside code you are already editing.

5. View JSON from the command line

For terminal workflows, pipe JSON through a formatter. With jq installed:

jq . data.json        # pretty-print
jq '.users[0]' data.json   # drill into a path

Or use Python with no extra install:

python -m json.tool data.json

Use it when: you are in a shell, scripting, or working on a remote server.

Tips for viewing large JSON files

• Collapse first, expand as needed. A tree viewer keeps a 10,000-line file manageable — open only the branch you care about.
• Validate if it will not open. If a viewer rejects the file, run it through a JSON validator to find the exact line and column of the syntax error.
• Minify or format intentionally. To read, format it; to ship it, minify it.
• Mind privacy. For sensitive data, use a client-side tool so nothing is uploaded.

Which should you use?

For a one-off look, nothing beats an online JSON viewer: paste, view, done — on any device, with no install. Reach for a Chrome extension if you open JSON URLs constantly, Notepad++ or VS Code when the file sits next to your work, and jq when you are in the terminal. Whatever you pick, the goal is the same: turn raw JSON into something you can actually read.

New to the format? Read what is JSON and common JSON errors next.