Render Alert

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Render Alert is a Blender add-on that plays a sound when a render finishes.

It's accessible in both:

• Render Properties panel
• 3D Viewport N-panel

You can use the default system beep or choose a custom audio file.

Installion and Usage

InstallationNUsage.mp4

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Notify Phone Setup

Install ntfy app

Open your phone's app store, search for ntfy, and install it.

• Android (Google Play): search "ntfy"
• iPhone (App Store): search "ntfy"

Subscribe to a topic

A "topic" is just a name you make up. Anything sent to that topic name shows up as a notification on your phone.

1. Open the ntfy app.
2. Tap the + button (or Subscribe to topic).
3. Type a topic name. Make it long and hard to guess, because anyone who knows the name can send you notifications. For example:

   jideeh-render-alert-8x2k

4. Tap Subscribe. That's your topic. Keep it handy for the next step.

Turn on Notify Phone in Blender

1. In Blender, open the Render Alert settings. You can find them in either place:
   • Properties → Render → Render Alert Sound, or
   • 3D Viewport → N panel → Render Alert tab.
2. Tick Notify Phone.
3. In the ntfy Topic field, paste the exact same topic name you subscribed to in Step 2.
4. Leave Server as https://ntfy.sh unless you run your own ntfy server. Optionally, customize what the notification says:

• Title — the bold heading on the notification (default: Blender).
• Message — the notification text (default: Render complete!).

Make sure online access is on

Blender has a global switch that controls whether add-ons are allowed to use the internet. Render Alert respects it, so if it's off, no notification is sent (your render sound still plays).

To check it: Edit → Preferences → System → Network → Allow Online Access, and make sure it's enabled.

If online access is off, the Render Alert panel shows a warning and the Test button tells you no notification was sent.

Features

• Notifies Phone when rendering is complete
• Plays an alert when rendering is complete
• Supports a default system beep
• Supports custom sound files
• Adds controls to the Render Properties panel
• Adds controls to the 3D Viewport N-panel
• Includes a test button for checking the selected alert sound
• Uses Blender's built-in audio system for broader audio format support

Audio Format Support

On Windows, .wav files can be played with Python's winsound.

For other formats, Render Alert uses Blender's built-in aud module. Blender's audio API can load sound files such as .ogg, and its documented codec/container list includes formats such as MP3, OGG/Vorbis, FLAC, and WAV. 【2-a72853】

Recommended formats:

• .wav
• .ogg
• .mp3
• .flac

Actual playback support can still depend on the Blender build and the audio file itself.

Compatibility

Render Alert is designed for Blender 3.6 and newer.

For Blender 3.6 to 4.1, install it as a regular legacy add-on.

For Blender 4.2 and newer, it can also be packaged as a Blender extension using blender_manifest.toml.

Legacy Add-on Installation

1. Download the add-on Python file.
2. Open Blender.
3. Go to Edit > Preferences > Add-ons.
4. Click Install.
5. Select the add-on file.
6. Enable Render Alert.