Why You Shouldn't Use an Online Webhook Secret Generator
Online secret generators ask you to trust someone else's server with a value whose whole point is secrecy. Use your terminal, or your own browser console, instead.
Security
A collection of 3 issues
Webhook Secret Best Practices: Length, Storage, and Zero-Downtime Rotation
How long a webhook secret should be, static tokens vs HMAC signatures, storing secrets in environment variables, and rotating them with zero downtime.
How to Generate a Webhook Secret (Copy-Paste Commands for Linux, macOS, Windows)
Copy-paste terminal commands to generate a cryptographically strong webhook secret on Linux, macOS, and Windows, with no installs, and how to use it in a self-hosted receiver.