JSON Viewer
JSON Viewer renders your JSON as an interactive, collapsible tree so you can explore deeply nested structures without scrolling through endless brackets. Expand and collapse any node, or open and close the whole document at once.
It is the fastest way to understand the shape of a large API response or configuration file. Parsing happens in your browser, so your data stays private.
How to use JSON Viewer
- 1
Paste your JSON
Drop the JSON you want to explore into the input box.
- 2
Expand and collapse
Click any node to toggle it, or use Expand all / Collapse all for the whole tree.
- 3
Read the structure
Keys, strings, numbers, booleans and null are color-coded; arrays and objects show their item counts.
Why a tree view helps
Raw JSON, even when indented, gets hard to scan once it nests more than a few levels deep. A collapsible tree lets you fold away the parts you do not care about and focus on the branch you are inspecting, which is invaluable for large or unfamiliar documents.
Item counts on each array and object give you a sense of size at a glance, before you expand anything.
Viewing vs formatting
The viewer is for exploring structure interactively; a formatter or pretty printer is for producing clean text you can copy back into a file. Use the viewer to understand a payload, then a formatter when you need the indented source.
Both read the same JSON — the difference is whether you want an interactive tree or plain, copyable text.
Frequently asked questions
- Can it handle large JSON?
- Yes. Collapsing branches you are not using keeps even big documents manageable, and everything renders locally.
- Does it change my JSON?
- No. The viewer only displays your data; it never modifies it.
- Is my data uploaded?
- No. The JSON is parsed and rendered entirely in your browser.
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