Developer Tools
JSON Formatter
Pretty-print JSON in your browser with selectable 2-space, 4-space, or tab indentation plus structure stats.
Please provide JSON text to format.
Formatted JSON will appear here.
Common JSON formatting workflows
Formatting JSON is usually part of debugging a payload, API response, config snippet, fixture, webhook sample, or encoded value before another handoff.
Validate before formatting
If a payload fails to format, check syntax first with JSON Validator. Validation helps catch missing quotes, trailing commas, and copied log fragments before you try to beautify the JSON.
Decode then format
For JSON hidden inside a URL, Base64 value, JWT claim, or query string, use the Developer Data Toolkit to decode, validate, and format without sending snippets to a server.
Check shape before conversion
Use the detected type, top-level key count, array item count, and nesting depth to confirm the payload shape before converting it to CSV, YAML, or TypeScript types.
Minify after review
Once the structure looks correct, send the same payload to JSON Minifier for compact config, embed, environment variable, or API examples.
Quick answer
JSON Formatter is a browser-based json formatter for checking copied developer data such as payloads, URLs, encoded values, identifiers, snippets, or logs without sending the input to a server.
- Primary task
- json formatter
- Processing
- Runs on copied snippets in your browser; no account or saved input.
- Workflow
- Developer Data Toolkit
What this tool does
This tool parses raw JSON, formats it with your chosen indentation, reports detected type, top-level keys, array items, and nesting depth, then lets you copy the formatted output or a concise summary.
Common use cases
Validate, pretty-print, inspect, and copy pasted JSON from API responses, logs, configs, fixtures, or encoded payloads before debugging, documenting, minifying, or converting it.
Use JSON Formatter when you are working with copied API payloads, logs, encoded values, config snippets, identifiers, or debugging data and need a quick browser-local check before pasting the result into docs, tickets, tests, or another developer tool.
How to use it
- Paste or type JSON into the input box.
- Choose 2 spaces, 4 spaces, or tabs for the formatted output.
- Review the structure stats and copy the formatted JSON for APIs, docs, tickets, or debugging.
Example workflow
Copy a small payload or encoded value from an API response, request URL, log line, or config file. Run the focused check here, confirm the output is readable, then continue with related developer data tools such as validation, formatting, decoding, timestamp conversion, or CSV/JSON conversion.
Privacy note
Client-side only: formatting runs in your browser. ClearUtils does not upload, store, fetch, or log your JSON input.
Practical notes for this tool
Best use case
Use JSON Formatter when a compact API response, webhook payload, config snippet, or copied log value needs indentation and structure before debugging, documentation, validation, or sharing with a teammate.
Format a compact API response
{"status":"ok","items":[{"id":42,"name":"Sample"}],"next":null}{
"status": "ok",
"items": [
{
"id": 42,
"name": "Sample"
}
],
"next": null
}Privacy and local processing
JSON formatting runs locally in your browser on the pasted text. ClearUtils does not upload, store, or transmit API payloads, config examples, logs, or formatted output.
Limitations to know
- It expects valid JSON syntax before formatting succeeds.
- It does not call APIs, fetch URLs, or verify live endpoints.
- Avoid pasting production secrets, private tokens, or customer data into any browser utility.
Practical FAQ
Should I format JSON before validating or minifying it?
Format first when a person needs to inspect the structure, then validate to catch syntax mistakes. Minify only after the JSON is reviewed and ready to paste into a compact destination.
Related workflow links
FAQ
These answers focus on copied-snippet workflows, safe sample data, validation boundaries, and what to check before moving output into code, APIs, docs, or tickets.
6 focused answers for this page
Does this upload my JSON?
No. JSON is formatted locally in your browser only; ClearUtils does not upload, store, fetch, or log pasted payloads.
Can I choose indentation?
Yes. You can format JSON with 2 spaces, 4 spaces, or tabs before copying the pretty-printed output.
What JSON structure stats are shown?
The formatter shows detected JSON type, top-level key count, top-level array item count, nesting depth, input characters, and output characters.
Can it handle invalid JSON?
It validates JSON first and returns a clear parse error when the input is invalid, then you can fix the source and run the formatter again.
Should I validate JSON before formatting it?
If the source came from logs, chat, or a copied API response, JSON Validator can isolate syntax problems before you pretty-print or convert the payload.
Can I use this with encoded JSON?
Yes. Decode URL-encoded or Base64 JSON first, then format it here, or use the Developer Data Toolkit preset for a combined decode, validate, and format workflow.