JSON Tree Viewer
Switch your JSON output from flat text to a collapsible tree to navigate deeply nested structures quickly. Donfig's tree viewer renders objects and arrays as expandable nodes; click any branch to open or close it. URL strings detected in values are auto-linked, and image URLs show a hover preview so you can spot what your data refers to without leaving the page. Big-number mode preserves full integer precision — IDs and blockchain values that would round in vanilla JSON parsing stay intact. The tree updates live as you edit the JSON in the input pane.
JavaScript is required to use the live tool. Please enable JavaScript and reload.
Frequently asked
How is the tree view different from the text view?
Text view shows the raw formatted JSON with syntax highlighting. Tree view shows the same data as collapsible nodes — better for exploring large or deeply nested objects.
Does it handle very large JSON?
Yes; collapsing branches keeps rendering fast. Each level only expands when you click it.
Why do some links show a preview?
URLs ending in .png/.jpg/.gif/.webp/.svg/.avif show a small image preview on hover. Useful for inspecting profile pictures or asset URLs in API responses.