Do I need ngrok to test webhooks locally?

Not always, but usually yes if the service sending the webhook is on the public internet.

When you do need ngrok

Use ngrok (or a similar tunneling tool) if:

• Your webhook endpoint is running on localhost or behind a private network
• The external service must reach your machine over the internet
• You want to test real incoming webhook requests from Stripe, GitHub, Slack, etc.

ngrok gives your local server a public HTTPS URL that forwards requests to your machine.

When you don’t need it

You may not need ngrok if:

• The webhook sender and receiver are both in the same local/network environment
• You’re using a mock, simulator, or local test client
• The service supports test mode or event replay without calling your local machine
• You deploy to a staging server with a public URL and test there

Alternatives

• Cloudflare Tunnel
• localtunnel
• Expose
• Deploying to a staging environment
• Using a request bin/webhook inspector for debugging

Bottom line

If you want a real external service to send webhooks to your laptop, yes, you need some kind of public tunnel—ngrok is the common choice.

If you tell me which service you’re testing with, I can tell you the best setup.