NSI Designer

Features

• A PySide6 desktop application for creating NSIS installer scripts (.nsi):
• Just point to .exe all other files in the exe-location will be added to the installer package
• Live script preview
• Asset pickers and format conversion (icons to .ico, welcome bitmap to .bmp)
• Set Registry values and environment variables
• Language selection dialog
• Presets for install location, execution level, and scope
• Export with encoding selection (UTF-8 or ANSI)
• Optional flags /S (silent), /NOICONS (do not create shortcuts), /LOG=[path] (logging) and /D=[path (always without Quotes!)]
• Makensis integration to compile the script directly from within the app

What is NSI Designer?

NSI Designer is a free Windows installer creator and NSIS GUI tool that helps developers build professional setup packages without writing scripts by hand.
It acts as a setup maker / installer builder for your applications, generating .nsi scripts and compiling them into .exe installers using NSIS.

With NSI Designer you can:

• Quickly create Windows setup wizards for your apps
• Use a graphical interface instead of editing NSIS scripts manually
• Package executables, assets, registry keys, and environment variables
• Export ready‑to‑use installers with uninstaller support
• Create Nullsoft Scriptable Install System boilerplates for your applications

Whether you call it an installer maker, setup creator, or installer generator, NSI Designer gives you a modern, PySide6‑based desktop app to streamline the process.

Download Windows Installer

Get the latest Installer: https://github.com/digidigital/nsi-designer/releases

Install via PyPi

Install via pypi and run from command line:

nsi_designer

or

python -m nsi_designer

NSIS (Nullsoft Scriptable Install System)

Don´t forget to install NSIS - https://nsis.sourceforge.io/ - since you need it to compile the scripts.

Notes

• Asset conversions happen on export using Pillow.
• The uninstaller reverses all installer actions, including registry and environment changes (safe append removal).
• Always manually check the script and test the installer prior to production use!
• If you mess with the registry things can go terribly wrong on uninstall if you do not take care that everything is set up correctly.
• NEVER use set-Mode with existing environment variables (like Path)