JSON tree viewer

Validate JSON, pretty-print it, and explore an expandable tree.

How it works and limits

Strict JSON only: double-quoted keys, no comments or trailing commas. Object keys, arrays, values and types appear in an expandable tree. Maximum 100,000 characters, 1,000 displayed tree nodes and 40 tree levels. Duplicate object keys follow JSON.parse behavior (last wins); large integer precision follows JavaScript numbers.

Worked example

source: {"project":"Utilities","tools":["calculator","converter"],"ready":true}

Inputs start empty. Load example fills them only when you choose it. Reset clears inputs and results.

This tool runs locally. When enabled, Google manages regional privacy choices. Google code can access this page and its inputs.

JSON tree viewer

Source

Output