n8n Webhooks Masterclass: Build APIs, QR Tracking & No-Code Apps from Scratch (Full Tutorial)

Webhooks are the single most powerful trigger inside n8n — and once you
truly understand them, you can build entire applications, integrations,
and tracking systems without writing a backend.

In this complete masterclass, I walk you through everything you need to
know about webhooks in n8n — starting from the absolute basics of what an
HTTP request actually is, all the way to building real-world projects
like QR code scan tracking and a warranty registration portal triggered
entirely through a custom webhook.

🔹 What you'll learn in this video:
- What a webhook actually is (and how it differs from outbound API calls)
- HTTP methods explained — GET, POST, PUT, DELETE — and when to use each
- Difference between app-based triggers vs custom webhooks
- How to create your first custom webhook in n8n
- Working with query parameters, path parameters, and JSON payloads
- Unix timestamps & epoch time — why banks and payment systems use them
- Responding back to a webhook (sync vs async responses)
- Redirecting webhook calls to a real website (302 redirects)
- Real Project #1 — QR code scan tracking system with Google Sheets
- Real Project #2 — Location-based discount/coupon delivery via QR scans
- Real Project #3 — Building a full warranty registration page powered
entirely by a webhook landing page (no traditional code)
- How to handle file uploads through webhooks
- Common errors and how to debug them live

By the end of this video, you'll be able to design, build, and deploy
webhook-driven automations and apps that would normally require a
developer and a backend server.

⚠️ Disclaimer:
This video is for educational and demonstration purposes only. All
workflows, URLs, sample data, customer details, and integrations shown
are for tutorial illustration only and do not represent live production
systems. Always test webhooks in a staging environment before pushing
to production, secure your endpoints with authentication, and follow
your organisation's data privacy and security policies when handling
real user data. The creator is not responsible for any data loss,
security issues, or outcomes resulting from implementing the techniques
shown in this video. n8n and all other third-party tools mentioned are
trademarks of their respective owners — this content is independently
created and not affiliated with or endorsed by n8n.

👉 If this video helped you understand webhooks better, hit Like,
Subscribe, and drop a comment with what you'd like to see built next.

— Growwstacks | Make.com Platinum Partner | Certified n8n Experts
🌐 https://growwstacks.com
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Видео n8n Webhooks Masterclass: Build APIs, QR Tracking & No-Code Apps from Scratch (Full Tutorial) канала Growwstacks Automation (English)