Free Chrome Extension for Make.com

Stop waiting for Make webhooks to receive data.

Send test payloads to any Make.com webhook URL on demand. Debug data structure issues, inspect responses, and iterate on your automation scenarios without leaving your browser.

Make Webhook Tester
POST
https://hook.us1.make.com/abc123def456
{
"order_id": "ORD-2024-001",
"customer": "Jane Smith",
"total": 49.99,
"status": "paid"
}

Make.com webhook problems you've probably hit

These are the most common issues Make.com users run into with webhook triggers. A proper testing tool helps you diagnose them faster.

Stuck on "Waiting for data..." forever

You click Run Once, Make shows "The request was accepted. Waiting for data..." and nothing happens. The scenario never triggers. You have no idea if your webhook fired, if the URL is wrong, or if Make just isn't listening.

"Redetermine data structure" breaks or disappears

Make requires you to define a data structure for your webhook. The Redetermine button sometimes vanishes from the UI, runs but doesn't update, or holds onto a stale structure from a previous payload shape.

JSON arrives as one giant unparsed string

Instead of parsing your JSON into mappable fields, Make dumps the entire payload as a single string blob. This happens when the sender doesn't set Content-Type: application/json or when nested JSON confuses Make's auto-parser.

Webhook works in Run Once but never triggers automatically

You test successfully with Run Once, toggle the scenario ON, and incoming webhooks just queue up without executing. The scenario is set to "Immediately as data arrives" but nothing runs.

Rate limits silently drop webhook events

Make has a default limit of 30 webhooks per second and a queue of 50. Exceed it and Make returns 429 or 400 ("Queue is full"). Those events are permanently lost if the sender doesn't retry.

Cannot access incoming request headers

Need to verify a webhook signature from X-Signature or read an Authorization token? Make's standard webhook module doesn't expose incoming headers as mappable fields, even though the headers are received.

A faster way to test Make.com webhooks

Purpose-built for webhook testing. Pre-configured with POST + JSON defaults so you can send test data to your Make scenarios immediately.

Send test data on demand

Fire HTTP requests to your Make webhook URL whenever you need to, without waiting for an external trigger. Test during Run Once without depending on a third-party service to send data.

Control Content-Type exactly

Select JSON, XML, text, or form URL-encoded and the correct Content-Type header is set automatically. No more JSON arriving as an unparsed string because the header was missing.

Inspect the full response

See the status code, response headers, and body with JSON syntax highlighting. Immediately know if Make returned 200, 429 (rate limit), or 400 (queue full) and read the error details.

cURL import and export

Paste cURL commands from Make documentation or tutorials and they auto-convert to a ready-to-send request. Export your working request as cURL for documentation or sharing.

Request history

Your last 100 requests are saved automatically with full payload details. Search and restore any previous request. Re-send failed webhook payloads without rebuilding them from scratch.

Custom headers and auth

Add custom headers, set Bearer tokens, or use Basic Auth credentials. Test Make webhooks that require specific headers for authentication or routing.

Test your first Make webhook in 60 seconds

1

Install the extension

Add Make Webhook Tester to Chrome from the Web Store. Free, no credit card.

2

Paste your webhook URL

Copy your Make webhook URL (hook.us1.make.com/...) and paste it in. The extension defaults to POST with a JSON body.

3

Send and iterate

Write your JSON payload and hit Send. See the response instantly. Adjust your payload structure and re-send until Make parses it correctly.

Frequently asked questions

What is Make Webhook Tester?
Make Webhook Tester is a free Chrome extension that lets you send HTTP requests to Make.com (formerly Integromat) webhook URLs directly from your browser. It supports JSON, XML, text, and form-encoded payloads, cURL import/export, request history, and authentication. Pre-configured with POST + JSON defaults for immediate use.
Can this help with the "Waiting for data" issue?
Yes. Instead of waiting for an external service to fire a webhook, you can send test data to your Make webhook URL on demand. Open your Make scenario in Run Once mode, then use the extension to send a JSON payload immediately. You control exactly what data is sent and when.
Will this fix the JSON unparsed string problem?
The extension automatically sets the Content-Type: application/json header when you select JSON as the body type. This is the most common cause of Make receiving JSON as an unparsed string. If Make is still not parsing correctly, you can see the full request headers to verify what was sent.
Can I re-send a failed webhook payload?
Yes. The extension saves your last 100 requests with full payload details. If a Make scenario fails and you need to re-trigger the webhook after fixing the error, find the request in history and re-send it with one click.
Does this work with Make Custom Webhooks?
Yes. The extension sends standard HTTP requests to any URL. It works with Make Custom Webhooks, standard Webhooks, and any other Make endpoint that accepts HTTP requests.
Is Make Webhook Tester free?
Yes, completely free. No subscription, no usage limits, no premium tier.

Build Make automations with confidence

Stop relying on external services to trigger your webhooks. Send test data on demand, inspect every response, and debug your Make scenarios faster.