JSON Formatter for Analysts

Format an API response, validate a malformed payload, and walk a deeply nested tree.

The tools that come up when the actual job is interpreting data rather than collecting it: CSV viewer with column typing for the export you just got from the database, JSON formatter for the API response, regex tester against the source string, base64 for the binary blob someone embedded in a JSON field, hash for source verification, and the AI summarizer for digesting long-form sources.

Open the JSON Formatter →

What it does for Data analysts and researchers

Paste a minified API response and get a syntax-highlighted tree you can collapse by key.
Validates as it parses, so a trailing comma or stray quote is highlighted on the same line it lives on.
Minify the other way too - one click turns formatted JSON back into what your server actually wants on the wire.

How to use it

Open the tool and paste a JSON blob (from your terminal, from a curl, from a log line).
Pick 2-space or 4-space indentation. The tree expands automatically; click any key to fold its subtree.
If the JSON is malformed, the parser stops at the first error and points at the line and column, so you do not have to count braces by eye.

Other tools Analysts reach for

Common questions

What is the fastest way to find one field in a huge payload?

Format it first, then collapse the branches you do not need. Walking a tree beats scrolling a single minified line, and the indentation makes a missing bracket obvious at the point where it breaks.

Why does a payload fail to parse?

Trailing commas, single quotes and unquoted keys are the usual causes - none of them are valid JSON, whatever the source language tolerated when it produced the string.

Can I convert JSON to CSV here?

No - this page formats and validates. Export the table from the source system where the schema is known, then open that CSV in the viewer, rather than flattening a nested payload by hand.