JSON Viewer
Paste JSON and explore it as a collapsible, searchable tree — entirely in your browser.
A JSON viewer turns a dense document into a tree you can actually navigate: expand and collapse objects and arrays, see how many keys or items each one holds, and jump to any value with the filter box. Like every JSONNeat tool it runs locally — your data never leaves the tab.
Paste JSON on the left to explore it here.
Why a tree view beats scrolling
Pretty-printed JSON is readable up to a point. Past a few hundred lines — a Kubernetes manifest, an OpenAPI spec, a serialized ORM graph — you lose the shape of the document in the indentation. A tree view collapses everything you aren’t looking at, so you can open one branch at a time and keep the big picture in view. The item and key counts on each collapsed node tell you how big a branch is before you open it.
Find anything with the filter
Type in the filter box and JSONNeat keeps every node whose key or value contains your text, expanding the branches that lead to each match. It’s the fastest way to answer “does this response contain a field called nextPageToken?” or “where does the value 42 actually appear?” without reading the whole payload.
Privacy
The viewer parses and renders your JSON in the browser with the native engine. No part of the document is uploaded, logged, or stored — the same guarantee that applies to the formatter, validator and minifier.
Frequently asked questions
- What is a JSON viewer?
- A JSON viewer parses a JSON document and shows it as a collapsible tree instead of a wall of text. You can expand and collapse objects and arrays, see how many keys or items each one holds, and navigate deeply nested data without counting braces by hand.
- Is my JSON uploaded anywhere?
- No. JSONNeat parses and renders the tree entirely in your browser using the native JSON engine. Nothing is sent to a server, logged, or stored — safe for production API responses and private payloads.
- How do I search inside the JSON?
- Type in the filter box above the tree. JSONNeat keeps every node whose key or value matches, and automatically expands the branches that contain a match so you can see it in context. Clear the box to collapse back to the normal view.
- Can it handle large JSON files?
- Yes — multi-megabyte documents render fine on a typical laptop. Extremely large files (hundreds of MB) can slow the browser because the whole tree is held in memory; for those, format with jq in a terminal instead.
- What do the colours mean?
- Each primitive type is coloured so you can scan structure quickly: strings, numbers, booleans and null each get their own colour, and keys are highlighted separately from values.
- What is the difference between the viewer and the formatter?
- The formatter gives you clean, indented text you can copy back into your code. The viewer gives you an interactive tree for exploring and understanding structure. They share the same parser, so if a document opens in one it will open in the other.