uTPro.Feature.TextToSpeech.Piper 18.0.1

.NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 
dotnet add package uTPro.Feature.TextToSpeech.Piper --version 18.0.1
                    


                    

                
NuGet\Install-Package uTPro.Feature.TextToSpeech.Piper -Version 18.0.1
This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package. 
<PackageReference Include="uTPro.Feature.TextToSpeech.Piper" Version="18.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package. 
<PackageVersion Include="uTPro.Feature.TextToSpeech.Piper" Version="18.0.1" />
                    


                            Directory.Packages.props
                        

                    

                
<PackageReference Include="uTPro.Feature.TextToSpeech.Piper" />
                    


                            Project file
For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package. 
paket add uTPro.Feature.TextToSpeech.Piper --version 18.0.1
                    


                    

                
#r "nuget: uTPro.Feature.TextToSpeech.Piper, 18.0.1"
#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package. 
#:package uTPro.Feature.TextToSpeech.Piper@18.0.1
#:package directive can be used in C# file-based apps starting in .NET 10 preview 4. Copy this into a .cs file before any lines of code to reference the package. 
#addin nuget:?package=uTPro.Feature.TextToSpeech.Piper&version=18.0.1
                    


                            Install as a Cake Addin
                        

                    

                
#tool nuget:?package=uTPro.Feature.TextToSpeech.Piper&version=18.0.1
                    


                            Install as a Cake Tool

uTPro.Feature.TextToSpeech.Piper

Documentation: https://docs.utpro.dev/uTPro.Feature.TextToSpeech/offline-voices/

Offline Piper voices for uTPro.Feature.TextToSpeech. Fast (about 14x real time on a CPU), free, no API key, no outbound traffic, and it includes Vietnamese.

dotnet add package uTPro.Feature.TextToSpeech.Piper

The add-on registers itself; no Program.cs changes. Then:

  1. Download Piper for your OS from the releases page and extract it to umbraco/Data/uTProTextToSpeechPiper/piper/ (on Linux: chmod +x piper; use a Debian-based image, not Alpine).
  2. Download a voice (.onnx and .onnx.json) from piper-voices into umbraco/Data/uTProTextToSpeechPiper/models/, for example vi_VN-vais1000-medium.
  3. In Settings → Advanced Settings → Text To Speech → Voices, map vi-VN to Piper / vi_VN-vais1000-medium.

Paths can be changed with uTPro:Feature:TextToSpeech:Piper:ExecutablePath and ModelsRoot. Piper runs with an argument list (never a shell), only models inside the models folder can be selected, and every run has a timeout (TimeoutSeconds, default 120).

See LICENSE.txt. Piper itself and its voices are distributed under their own licenses.

Product Compatible and additional computed target framework versions.
.NET net10.0 is compatible.  net10.0-android was computed.  net10.0-browser was computed.  net10.0-ios was computed.  net10.0-maccatalyst was computed.  net10.0-macos was computed.  net10.0-tvos was computed.  net10.0-windows was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version Downloads Last Updated
18.0.1 56 11/9/2026
18.0.0 55 11/7/2026
17.0.1 49 11/9/2026
17.0.0 49 11/7/2026

v17.0.1 / v18.0.1: Package title cleanup - the NuGet package title no longer carries the "for Umbraco N" suffix (the add-on keeps its descriptive name). No functional changes. v17.0.0 / v18.0.0: Initial release, shipped as two version lines — 17.x for Umbraco 17 and 18.x for Umbraco 18 — in lockstep with the core TextToSpeech package lines. Piper engine for uTPro.Feature.TextToSpeech: OS-aware binary resolution, voices discovered from the models folder, speed via length_scale, bounded run time, no shell interpolation.