Instant Visualization
The moment you paste JSON, it's drawn as a graph in the right pane. Objects, arrays, and primitive values are split into color-coded nodes.
JSON visualizer · browser-based
JSON Visualizer — paste, view & edit instantly
{ } jsonbloom renders your data as an interactive graph — pan, zoom, edit values, add keys. No install, no account, your data never leaves the browser.
JSON visualization, simple and fast
{ } jsonbloom is built to render even large JSON files smoothly. Collapse and expand nodes, pan and zoom, and grasp the whole structure at a glance. No data is ever sent to a server — everything runs in your browser.
Before · After
From a wall of brackets to a graph you can read at a glance.
Raw JSON
{
"user": {
"name": "Ada",
"age": 30
},
"tags": ["json", "viz"]
}Visualized
Features
Editor Tools
Format, minify, and copy with one click. Syntax highlighting and line numbers make writing JSON comfortable.
Runs in Your Browser
No data is sent to a server. Paste sensitive JSON safely — everything is processed on the client side.
What is a JSON Visualizer?
A JSON visualizer turns the JSON behind APIs and config files into a graph of nodes and connections, so you can see at a glance how objects nest and how many items an array holds — instead of counting brackets in plain text. { } jsonbloom is a browser-based JSON viewer for developers, API engineers, and data analysts. Read the full guide →
When developers reach for a JSON visualizer
API responses
Inspect a 200‑line REST or GraphQL response without scrolling — see which arrays are
empty, which fields are null, and how nested resources connect at a glance.
Config files
Make sense of tsconfig.json, package.json,
app.json, or any deeply nested settings file. Edit values inline and copy
the formatted result back into your project.
Webhook & log payloads
Stripe events, GitHub webhooks, Sentry payloads — paste them in to find the exact field you need without grepping through raw text.
Schema design
Sketch a new JSON shape live in the graph. Add keys, nest objects, and watch the structure form before you write a single line of code.
How to read deeply nested JSON
Deeply nested JSON is hard to read as text because every level adds distance between a key and its value. Collapsing branches, tracing paths, and viewing the structure as a graph make it manageable. Read the full guide on large & nested JSON →
Common JSON validation errors
Trailing commas, single quotes, unquoted keys, missing brackets, and comments are the usual reasons JSON fails to parse. Each has a quick, concrete fix. Read the full guide on JSON syntax errors →
Learn more — JSON guides
How to Visualize JSON
Turn raw JSON into a readable graph in seconds — a step-by-step walkthrough.
Read Large & Nested JSON
Strategies for navigating huge, deeply nested JSON without losing your place.
Common JSON Syntax Errors
The errors that break JSON parsing most often, each with a concrete fix.
View JSON as a Graph or Tree
Graph view vs tree view — how each maps to your data and when to use which.
Frequently Asked Questions
Does jsonbloom send my data to a server?
No. All JSON parsing and visualization happens entirely in your browser. Your data never leaves your device.
How large a JSON file is supported?
JSON up to a few megabytes renders smoothly. For very large files, nodes start collapsed by default and you can expand only the parts you need.
Is jsonbloom free?
Yes — jsonbloom is completely free to use. The site is supported by display ads.
Can I edit values directly in the graph?
Yes. Click any value, key, object, or array in the graph to edit it inline. You can also add and delete keys or array items, and the underlying JSON in the editor updates instantly.
Does it work offline?
After the first visit the page is cached by your browser, so basic editing works without a connection. Full offline support (PWA install) is on the roadmap.
What input formats are supported?
Standard JSON only (RFC 8259). JSON5, JSONC (with comments), and YAML are not supported.