What is an API response formatter?

An API response formatter is a specialized utility that parses, indents, and color-codes raw payload data returned by web servers, microservices, and webhooks for rapid developer inspection.

How do I format a raw webhook payload?

Paste the unformatted webhook payload (from Stripe, PayPal, GitHub, etc.) into the editor and click Format Response. The tool automatically detects JSON or XML and formats it with clear indentation.

Does the tool support GraphQL query and response formatting?

Yes. You can format both GraphQL JSON responses and raw GraphQL schema query bodies.

Can I inspect both response headers and the body?

Yes. You can paste complete HTTP response dumps (including headers and body) and the tool will separate the HTTP status line, headers table, and formatted payload.

Are API credentials or bearer tokens safe in this tool?

Yes. Processing is completely client-side in your local browser window. Authorization headers and API keys are never transmitted over the internet.

Can I export formatted API responses as mock fixtures for testing?

Yes. Click 'Download Mock Fixture' to save the formatted JSON payload for use in Cypress, Jest, Playwright, or Postman test suites.

What formats can the tool auto-detect?

The formatter automatically detects JSON, XML, HTML, and plain text responses.

How does the tool handle minified error responses from production APIs?

It expands compressed stack traces, error codes, and validation error arrays into readable multi-line blocks for instant troubleshooting.

API Response Formatter

format, validate, inspect, search, and transform JSON API responses. Free, fast, and 100% private in your browser with zero sign-up. Free and instant.

TL;DR: API Response Formatter is a free, browser-based tool that runs 100% locally with instant results and complete privacy.

0 characters | 0 lines | 0 KB 100% Client-Side Private

Paste or load JSON to format & inspect API structure. Ready

JSONPath: $

{
  "status": "ready",
  "message": "Paste API response to format"
}

Response Metrics & Topology

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Transform API Response

Instant Client-Side Conversion

Instant In-Browser API Response Formatter

format, validate, inspect, search, and transform JSON API responses. Free, fast, and 100% private in your browser with zero sign-up. Free and instant. Everything executes client-side inside your browser with maximum speed, zero server latency, and complete confidentiality.

100% Client-Side Privacy Guarantee

All processing, parsing, generation, and transformations occur locally on your machine. Your files, parameters, and sensitive data are never transmitted to any external server.

Frequently Asked Questions

: An API response formatter is a specialized utility that parses, indents, and color-codes raw payload data returned by web servers, microservices, and webhooks for rapid developer inspection.
: Paste the unformatted webhook payload (from Stripe, PayPal, GitHub, etc.) into the editor and click Format Response. The tool automatically detects JSON or XML and formats it with clear indentation.
: Yes. You can format both GraphQL JSON responses and raw GraphQL schema query bodies.
: Yes. You can paste complete HTTP response dumps (including headers and body) and the tool will separate the HTTP status line, headers table, and formatted payload.
: Yes. Processing is completely client-side in your local browser window. Authorization headers and API keys are never transmitted over the internet.
: Yes. Click 'Download Mock Fixture' to save the formatted JSON payload for use in Cypress, Jest, Playwright, or Postman test suites.
: The formatter automatically detects JSON, XML, HTML, and plain text responses.
: It expands compressed stack traces, error codes, and validation error arrays into readable multi-line blocks for instant troubleshooting.

Embed This Tool

Add the live API Response Formatter to your own website with this lightweight responsive iframe:

<iframe src="https://nexlove.org/embed/api-response-formatter.html" width="100%" height="650" style="border:1px solid #e2e8f0;border-radius:12px" title="API Response Formatter — NexLove.org" loading="lazy"></iframe>

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