Webhook Payload Formatter
Paste any webhook JSON payload to format, validate, and analyze it. Works with n8n, Zapier, Make, Stripe, GitHub, and any API webhook.
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How the Webhook Payload Formatter Works
This tool takes raw JSON webhook payloads and formats them with proper indentation for easy reading. It validates the JSON structure, highlights syntax errors with exact position markers, and provides statistics about the payload including depth, key count, and size.
What Gets Analyzed
The formatter parses your JSON using the browser's native JSON.parse(), then re-serializes it with 2-space indentation. It counts total keys, nesting depth, arrays, and payload size in bytes. If parsing fails, it pinpoints the exact character position of the syntax error.
Webhook Payload Debugging Tips
When debugging webhook integrations in n8n, Zapier, or Make, the first step is always inspecting the payload structure. Common issues include missing required fields, unexpected data types (string instead of number), nested objects where flat values are expected, and arrays that should be objects.
Common Webhook Payload Formats
Most webhook providers send JSON with an event type field and a data object. Stripe uses type and data.object. GitHub uses action with the resource as the top-level key. Shopify wraps everything in the resource name. Understanding these patterns helps you map webhook data to your automation workflows correctly.
Minification for Production
When sending webhook payloads in your own automations, minified JSON reduces bandwidth and transfer time. The Minify button removes all whitespace and formatting, producing the most compact representation. This is especially useful when storing payloads in databases or passing them through message queues.
Privacy and Security
All formatting and validation happens in your browser. Webhook payloads often contain sensitive data like API keys, customer information, and payment details. None of this data leaves your device — no server processing, no logging, no storage.
Getting the Most from This Tool
Start by exploring the default settings to understand what the tool offers, then customize the inputs to match your specific needs. Use the results as a starting point for deeper analysis or decision-making. Bookmark this page for quick access in the future. All processing happens in your browser, so your data stays private and the tool works even without an internet connection after the initial page load.
Frequently Asked Questions
What webhook formats are supported?
This tool supports any valid JSON payload. It works with webhooks from n8n, Zapier, Make, Stripe, GitHub, GitLab, Shopify, Twilio, SendGrid, Slack, Discord, and any API that sends JSON.
Can it fix broken JSON?
The tool validates JSON and shows the exact position of syntax errors, but it does not auto-fix malformed JSON. Common fixes include adding missing quotes around keys, replacing single quotes with double quotes, and removing trailing commas.
Is my webhook data safe?
Yes. All processing happens entirely in your browser using JavaScript. No data is sent to any server. This is critical since webhook payloads often contain API keys, tokens, and sensitive customer information.
What do the payload statistics mean?
Keys shows the total number of key-value pairs. Depth shows the maximum nesting level. Arrays counts array structures. Size shows the payload in bytes. These help you understand payload complexity for debugging and optimization.
Can I use this to test my webhook endpoint?
This tool formats and validates payloads — it does not send HTTP requests. To test webhook endpoints, use our API Tester tool which can send POST requests with custom JSON bodies to any URL.