JSON Parser
Online JSON Parser
OnlinePaste your JSON and click Render Tree. The output pane shows a color-coded tree view — keys in one color, strings in another, numbers and booleans distinct. Object nodes show a key count and arrays show an item count, making it easy to orient yourself in large nested structures.
Free, fast, runs in your browser. No login needed.
The tree renderer walks your JSON recursively and builds an HTML representation with indentation and type-based color coding. Each value type has a distinct color: string values are highlighted differently from numbers, booleans, and null, making the structure easy to read at a glance. Keys are styled separately from their values.
Object nodes display a key count inline: { // 5 keys. Array nodes display an item count: [ // 12 items. These counts let you gauge the size of nested structures without expanding them fully.
Static rendering. The tree is a rendered HTML snapshot — it is not interactive. You cannot click to collapse or expand nodes. For large JSON documents, the full tree is rendered at once. If you need to navigate a large document with collapsible nodes, a browser DevTools console or a desktop JSON editor (like VS Code with a JSON extension) may be more practical.
The renderer HTML-escapes string values, so any &, <, or > characters in your data display correctly without breaking the HTML output.
Use cases: quickly inspecting an unfamiliar API response structure; finding the path to a nested value before writing a query; reviewing a config file's shape without counting indentation levels.
No. The tree is a static HTML render — there are no interactive expand/collapse controls. The full tree is rendered at once. For collapsible tree navigation, use your browser's DevTools (paste JSON into the console and inspect the object) or a desktop JSON editor.
Object nodes show // N keys (the number of direct properties), and array nodes show // N items (the array length). These counts appear inline next to the opening brace or bracket.
Keys, strings, numbers, booleans, and null values each have a distinct color. The exact colors depend on the current theme (dark or light). Toggle the theme using the moon button in the header.
Yes, but the full tree renders at once. For very large documents (thousands of nodes), the rendered output can be long. There is no pagination or lazy loading.
No. The tree rendering runs entirely in your browser.