Developer tool
JSON Viewer
Paste JSON and inspect it as an expandable tree, then copy the beautified output when you need a readable version.
Inspect nested JSON quickly
A tree view helps when a payload has deeply nested objects, arrays, repeated fields, or compact API data that is hard to read as plain text. You can open individual branches or expand everything at once.
The viewer also produces formatted JSON, so the same page can be used to read and copy a clean version.
Common uses
- Scan API responses for a specific nested field.
- Inspect arrays of records before converting or comparing them.
- Copy a beautified JSON fixture after checking its structure.
Related JSON tools
Use the JSON Validator when the input fails to parse, the JSON Compare tool for two versions, or JSON to YAML when a readable YAML format is easier to share.
FAQ
What does the tree view show?
It shows objects, arrays, keys, indexes, primitive values, and item counts in an expandable outline.
Can I expand or collapse everything?
Yes. Use the expand and collapse buttons after the JSON is parsed.
Does the viewer edit JSON?
No. It helps inspect and beautify JSON, but it does not edit individual tree values.
Is the JSON uploaded?
No. The tree view is generated in your browser.
Can I copy the beautified result?
Yes. The copy action copies the formatted JSON output.