by vignette·Workflow
Images © vignette. Used for product review; image policy.
Render Webhook keeps to a single, well-defined task and earns its place in the Blender extensions library for anyone who wants to know when a render starts, finishes or is cancelled without watching the progress bar. The pre-render script hook adds a little more flexibility than a plain notifier.
Render Webhook posts status reports on your Blender renders to a webhook endpoint. It currently supports Discord and Slack webhook formats. You set the endpoint URL and its type in the add-on's preferences, where a test button lets you check the connection.
Webhook sending is enabled per-project from the Scene > Output tab. By default, messages are sent when a rendering job is created, when it finishes and when it is cancelled. You can also assign a script to run before the render operator is called, which is useful for setting certain properties from a UI-safe thread. That script does not update the depsgraph or driver on its own, though you can trigger that behaviour manually from within it.
The add-on requests network permission to send HTTP requests to the webhook URL you provide. It is released under the GNU General Public License v3.0 or later and sits in the render pipeline section of the Blender extensions library.
Render Webhook is best for blender users who want automated status updates on their renders delivered to Discord or Slack.
Render Webhook is completely free to download and use.
Render Webhook is compatible with Blender 4.2 LTS and newer, so recent 4.2 LTS installs and later releases can run it. The add-on can be added by dragging its file into Blender or by installing it from disk through the Extensions preferences. The current version listed here is 1.0.2, updated in July 2025. Because it targets 4.2 LTS and up, you will need a version at or above that baseline for the add-on to load.
Render Webhook currently supports Discord and Slack webhook formats. You point it at your webhook endpoint by entering the URL and selecting its type in the add-on's preferences, and a test button there lets you confirm the connection is working before you rely on it. Support is limited to those two formats, so notifications are delivered to Discord or Slack channels rather than other services. The add-on requests network permission to send HTTP requests to the webhook URL you provide.
Render Webhook sends messages around render events. By default it posts when a rendering job is created, when it finishes and when it is cancelled, giving you a status report at each stage. Sending is enabled per-project from the Scene > Output tab, so you turn it on for the scenes you want to track. You can also assign a script that runs before the render operator is called, which helps set certain properties from a UI-safe thread.
Render Webhook is configured from its preferences in Blender. There you set the webhook endpoint URL and choose its type, then use the test button to check that it works. After that, enable webhook sending per-project from the Scene > Output tab. The add-on itself can be added by dragging its file into Blender or by installing it from disk. It is listed here as free, released under the GNU General Public License v3.0 or later; check the developer's page for current licensing.
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