Inno Setup 6.7.0 Download: Free Script-Driven Windows Installer Creator

Inno Setup

Jordan Russell’s Software • Windows Installer Creator

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Get for Windows

Platform

Version 6.7.0

Size 6 MB

Updated 2026-01-06

License Free

✓ Official Download

Reviewed by Ahmed Akber Verified: Jan 2026

Inno Setup is a free, open-source, and script-driven installation system designed for Windows programs. It allows developers to create a single, compact .exe setup file for easy online distribution. Since its introduction in 1997, it has become a trusted tool for reliably deploying software, rivaling many commercial installers in feature set and stability. The latest version, Inno Setup 6.7.0, continues to enhance customization and security for modern Windows environments.

Quick Start & Pro Tips

Implementing Custom Wizard Backgrounds and RedirectionGuard

1. Open your Inno Setup Script (.iss file) in the Compiler IDE.
2. Navigate to the [Setup] section.
3. Add the WizardBackImageFile directive to specify a background image file path.
4. Add the WizardBackColor directive to define a custom background color, which supports blending with the image.
5. For dark mode compatibility, use the WizardBackImageFileDynamicDark and WizardBackColorDynamicDark directives.
6. To enhance security, ensure the installer is compiled with the latest version to enable Windows RedirectionGuard mitigation by default.

Why: This recipe leverages the new v6.7.0 features for a professional, branded installer UI and implements a critical security mitigation against path redirection vulnerabilities, which is essential for modern Windows deployment.

Optimizing Installer Size with LZMA/LZMA2 Compression

1. In the [Setup] section of your .iss script, set the Compression directive to lzma or lzma2 for maximum file compression.
2. In the [Files] section, use the regserver or regtypelib flags to automatically register .DLL or .OCX files during installation.
3. Utilize the external and download flags in the [Files] section to fetch large components from a URL at runtime, reducing the initial installer size.

Why: Using LZMA/LZMA2 compression significantly reduces the final .exe file size for online distribution. The regserver flag automates the registration of shared components, while the download flag allows for dynamic fetching of large files, improving the user’s initial download experience.

Technical Specs

Main Capabilities

• Script-Driven Installation and Pascal Scripting: The core functionality is driven by a proprietary Inno Setup Script (.iss) file format, which can be extended with an integrated Pascal scripting engine for advanced run-time customization of the install and uninstall process.
• Advanced File Compression and Handling: Includes integrated support for deflate, bzip2, and 7-Zip LZMA/LZMA2 file compression to reduce the final installer size. It also supports comparing file version information, replacing in-use files, and shared file counting.
• Broad Windows Architecture Support: Provides extensive support for creating installers for 64-bit applications on 64-bit editions of Windows, including the x64 and Arm64 architectures.
• Security and Configuration Management: Supports password-protected and encrypted installs, digitally signed installs and uninstalls, and the creation of registry and .INI entries.
• Customizable Wizard Interface: Features a standard Windows wizard interface with support for dark mode, custom styles, and customizable setup types like Full, Minimal, and Custom.

Andy Zain Verified

Content Writer

8+ Years of experience

Andy Zain is a software content writer (8+ years, writing since 2015) who publishes download and install guides across major platforms and productivity categories. His goal is to help readers download the right version and install it safely using clear, up-to-date, source-backed instructions.