JSON Parser Online
Paste JSON and explore it as a collapsible tree — each branch shows its count, leaves are coloured by type, and statistics at the bottom summarise the shape (depth, total keys, type counts).
Last updated: May 27, 2026
Find this tool useful? Support the project to keep it free!
Buy me a coffeeWhat is JSON Parser Online?
Parsing JSON in a text editor only tells you whether the syntax is valid — it does not show the structure. For nested or large JSON, you usually want a tree view: each object collapses to a single line until you expand it, arrays show their length, and leaf values are typed and coloured.
This tool parses JSON with the strict built-in `JSON.parse`, then renders the result as an interactive tree. Each object and array shows its size; each scalar leaf is coloured by type. The statistics panel counts every value in the document by type and reports the maximum nesting depth — useful when you are deciding whether a JSON payload is becoming unwieldy or when you are validating a schema constraint informally.
How to Use JSON Parser Online
Paste JSON into the input panel (or load the sample).
The tree updates live. Click ▸ to expand or collapse any branch.
Use the statistics panel to inspect counts and depth.
Copy the formatted JSON via the Copy button.
Common Use Cases
- Quickly understanding the shape of a JSON payload from an API.
- Spotting parse errors with line and column without dropping into a code editor.
- Comparing two JSON documents informally by looking at the type counts and depth.
- Producing a printable indented representation by adjusting the indent setting.
Example Input and Output
A nested JSON value parses into a tree with two top-level keys and 9 total leaves.
{"user":{"id":42,"name":"Alice","roles":["admin","editor"]},"ts":1716800000}2 objects · 1 array · 3 strings · 2 numbers · max depth 3Privacy
All JSON parsing and tree rendering happen in your browser. No content is sent to a server.
Large documents
Very large JSON payloads (tens of MB) render slowly because the tree expands lazily but the parse and statistics walk are eager. For huge documents, prefer a streaming tool.
Frequently Asked Questions
How is this different from a JSON formatter?
A formatter only re-indents the text. This tool parses the JSON into a value, renders it as a collapsible tree, and reports per-type counts and depth.
Why is my JSON failing to parse?
The error message includes the position where JSON.parse stopped — the tool translates that to a line and column. Common causes: trailing commas, single quotes around strings, unquoted keys, comments. Use the JSON Fixer tool to auto-fix many of these.
Does the tree mutate my JSON?
No. The tree displays the parsed value but does not change it. Editing happens only in the input textarea.
Does this send my JSON anywhere?
No. All parsing and rendering happen locally in your browser.
Related Tools
JSON Formatter
Format, validate, and beautify JSON instantly — with clear error messages, Tree View, Diff mode, and Schema validation.
JSON Validator
Validate JSON syntax online. Shows valid/invalid status, error location (line and column), and structure stats including type, key count, and depth.
JSON Fixer
Fix broken or invalid JSON automatically. Repairs trailing commas, single quotes, bare keys, Python literals, and JavaScript comments.
JSON Cleaner
Clean JSON by removing null values, empty strings, empty arrays, and empty objects. Configurable per value type with a removal count stat.
JSON Navigator
Browse JSON as a collapsible tree, select any node, and copy its JSONPath. Shows the type and size of each branch — ideal for exploring large API responses.
JSON Sorter
Sort JSON object keys alphabetically in ascending or descending order, with deep or shallow sorting and optional array sorting.