How does the tree view determine field types?

The tree inspector introspects each key using JavaScript typeof, Array.isArray(), and null guards. It displays explicit visual badges for arrays with lengths, nested object counts, strings, numbers, booleans, and null values.

Can this tool simulate receiving live webhook HTTP POST requests?

This tool is designed to inspect, format, validate, and debug manually pasted JSON payloads and event fixtures. For capturing live HTTP POST requests from third parties in local development, use tools like the Stripe CLI, ngrok, or Cloudflare Tunnels.

What is the maximum JSON payload size supported?

Because parsing happens in your client-side JavaScript engine, payloads up to several megabytes (hundreds of thousands of lines) parse within milliseconds without memory bottlenecks.

100% Client-Side & PrivateDeveloper Tools

Webhook Payload Inspector

Inspect, validate, format, and search webhook event payloads locally with interactive hierarchical object inspection and data type detection.

Webhook Payload Input

Safe client-side JSON parser & schema inspector

Payload Structure Inspector

Type inference & hierarchical object visualizer

No JSON Payload ProvidedPaste a webhook event payload on the left or click “Try Example” to inspect object structures.

How to Inspect & Debug Webhook Payloads

Step-by-step instructions to analyze event structures, verify data types, and debug JSON formatting.

1. Paste Your Raw Webhook Payload

Copy the event body from your provider dashboard (Stripe, GitHub, Shopify, Clerk) or server logs and paste it into the editor, or click "Try Example".

2. Check Syntax & Error Diagnostics

The inspector instantly validates JSON syntax. If syntax errors exist (like trailing commas or unquoted keys), an alert flags the exact issue.

3. Explore Tree Structure & Filter Fields

Switch between Tree View and Formatted JSON. Collapse nested objects, check array lengths, and use the search bar to find nested IDs or metadata.

4. Copy Formatted JSON or Download

Export your formatted or minified payload with 1 click to save as a fixture in your backend unit test suite.

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Frequently Asked Questions

No. The Webhook Payload Inspector processes and parses all JSON entirely inside your browser using native JavaScript JSON.parse and browser memory. Your sensitive customer and payment tokens are never transmitted to any third party.

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100% Client-Side & PrivateDeveloper Tools

Webhook Payload Inspector

Inspect, validate, format, and search webhook event payloads locally with interactive hierarchical object inspection and data type detection.

Webhook Payload Input

Safe client-side JSON parser & schema inspector

Payload Structure Inspector

Type inference & hierarchical object visualizer

No JSON Payload ProvidedPaste a webhook event payload on the left or click “Try Example” to inspect object structures.

How to Inspect & Debug Webhook Payloads

Step-by-step instructions to analyze event structures, verify data types, and debug JSON formatting.

1. Paste Your Raw Webhook Payload

Copy the event body from your provider dashboard (Stripe, GitHub, Shopify, Clerk) or server logs and paste it into the editor, or click "Try Example".