ngrok vs Postman for webhook testing

Here’s the short version:

• ngrok = best when you need to receive real webhooks on your local machine
• Postman = best when you want to send/test webhook requests manually

What each does

ngrok

• Creates a public HTTPS URL that tunnels to your local server
• Useful for testing incoming webhooks from services like Stripe, GitHub, Slack, Shopify, etc.
• Lets those services call your local app as if it were deployed

Example use:

• Run your webhook server locally on localhost:3000
• ngrok gives you something like https://abc123.ngrok.io
• Configure Stripe/GitHub to send webhooks to that ngrok URL

Postman

• Lets you craft and send HTTP requests
• Great for manually testing your webhook endpoint
• You can simulate what a webhook payload looks like by sending a POST request to your local or remote endpoint

Example use:

• Send a POST request to http://localhost:3000/webhook
• Set headers/body to mimic Stripe/GitHub payloads

Which one to use?

Use ngrok if:

• You need to test a real third-party webhook delivery
• The provider must reach your local machine
• You want to validate the full end-to-end flow

Use Postman if:

• You want to test your server’s request handling
• You’re debugging payload parsing, auth, or response codes
• You don’t need the external provider to actually deliver the webhook

Best practice

Use both:

• ngrok to expose your local endpoint to the outside world
• Postman to manually reproduce and debug webhook payloads

Simple comparison

Tool	Best for	Direction	Needs public URL?
ngrok	Receiving webhooks locally	External → your local app	Yes
Postman	Sending test requests	You → your endpoint	No

If you want, I can also show:

1. how to test a Stripe/GitHub webhook with ngrok, or
2. how to simulate the same webhook in Postman.