JSON Viewer
Open JSON and inspect structure and values quickly. Upload a file, inspect the structure, and copy what you need fast. Handy during debugging.
JSON Viewer
OR
Result will appear here...
SIMILAR TOOLS
What this does
So you have got a big JSON response, thousands of lines, nested several levels deep, and scrolling through it as flat text is hopeless. This lets you actually look at it. Paste your JSON or upload a .json file, and view it as a tidy, foldable tree instead of one endless block.
How to use it
- Paste your JSON, or upload a
.jsonfile. - Pick how you want to see it from the View as menu: a tree, or plain text.
- Press View. In tree mode you can open and close branches to focus on the part you care about.
How it works
For the tree, the tool uses a small library called json-formatter-js. It takes your parsed JSON and renders it as an interactive, collapsible structure, where every object and array becomes a branch you can expand or fold away. The code and text options instead lay the data out as plain, indented text using the browser's own JSON writer. Either way, the JSON is parsed and built locally in your browser, so what you inspect never leaves your machine.
Why a tree view helps
The point of the tree is navigation. When data is deeply nested, you rarely want to read all of it at once, you want to drill into one branch. Folding away the parts you do not need keeps the structure readable and makes the shape of the data obvious at a glance: which fields are objects, which are arrays, and how deep the whole thing goes.
The plain text view is handy for the opposite case, when you just want the entire document laid out to read from top to bottom, or to copy somewhere else. Between the two, you can either explore a sprawling response piece by piece or grab the whole lot in one go.
Questions people ask
What is the difference between the views?
The tree view is interactive, letting you expand and collapse branches to explore the structure. The code and text views give you the same JSON as plain, indented text for reading or copying.
Will it handle a large file?
It parses and renders in your browser, so very large files lean on your machine. That said, exploring structure is exactly what it is built for, and folding branches you do not need keeps even big files manageable.
Does viewing change my JSON?
No. It only reads and displays the data. Nothing is altered, reordered, or rewritten.
Is the JSON uploaded?
No. Everything is parsed and shown locally in your browser, so the data stays with you.
References
- MDN Web Docs. JSON.parse(). https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/parse
- Mohsen Azimi. json-formatter-js: Render JSON objects in HTML with a collapsible navigation. https://github.com/mohsen1/json-formatter-js
Sugam Baskota is a senior software engineer and Computer Science graduate from UT Arlington, with interests in user scripts, browser extensions, developer tooling, and productivity systems. He spends time building practical utilities and extensions in the kinds of workflows Eon is designed to simplify. At Eon Tools, he reviews useful, password, and developer tools.