JSON Viewer
View and explore JSON data as an interactive collapsible tree online for free. Expand and collapse nodes to navigate complex nested JSON structures.
About JSON Viewer
Our JSON viewer renders your JSON data as an interactive collapsible tree, making it easy to navigate and understand complex nested structures. Click on any node to expand or collapse it. Arrays and objects are clearly distinguished, value types are color coded, and array lengths and object key counts are shown at each level. Ideal for exploring large API responses, debugging nested configuration files, and understanding unfamiliar JSON data structures.
Frequently Asked Questions
Can I expand and collapse JSON nodes?
Yes — click any object or array node to expand or collapse it. All nodes can be toggled independently.
Does it support large JSON files?
Yes — the viewer handles large and deeply nested JSON structures efficiently in your browser.
Is it free?
Yes, completely free, no signup required.