WolfPack

A custom LibreWolf distribution for Windows with optimized defaults, pre-installed extensions, and portable packaging.

What Is This?

WolfPack takes the official LibreWolf portable build and repackages it with:

• Google as default search engine (with suggestions enabled)
• DRM enabled out of the box (Netflix, Disney+, Spotify work immediately)
• Pre-installed extensions via enterprise policies
• Optimized performance defaults (disk cache, prefetching, GPU acceleration)
• Session persistence (cookies and logins survive restarts)
• Password manager and autofill enabled by default
• Resist Fingerprinting (RFP) disabled to prevent site breakage
• Dark theme with custom CSS support
• Portable mode with local profile storage

All telemetry, Mozilla promotions, Pocket, Firefox Sync, safe browsing, and other bloat remains disabled from upstream LibreWolf.

Downloads

Download from the Releases page.

Pre-Installed Extensions

Extensions are installed automatically on first launch via policies.json.

Changes from Stock LibreWolf

Enabled (was disabled)

• DRM / Encrypted Media Extensions (streaming services)
• Disk cache (performance)
• Search suggestions in URL bar
• DNS prefetching and speculative connections
• Password manager and form autofill
• Session persistence (cookies kept on shutdown)
• Weather widget on new tab page

Disabled (was enabled)

• Resist Fingerprinting (RFP) - causes timezone, canvas, and font issues
• Global Privacy Control (GPC)
• Sanitize on shutdown (users were getting logged out)
• Always-ask download location

Search Engines

Google is the default. Also available: DuckDuckGo, DuckDuckGo Lite, SearXNG, StartPage.

Building

Prerequisites

• Windows 10/11
• PowerShell 5.1+
• NSIS (for installer builds)
• .NET Framework 4.x (for launcher compilation)

Build Commands

# Build everything (downloads latest LibreWolf automatically)
.\build-portable.ps1

# Build specific version
.\build-portable.ps1 -Version "146.0.1-1"

# Portable zip only (skip installer)
.\build-portable.ps1 -PortableOnly

# Rebuild without re-downloading
.\build-portable.ps1 -SkipDownload

Output

• output/WolfPack-<version>-portable.zip
• output/WolfPack-<version>-setup.exe

Project Structure

WolfPack/
  assets/              # Icon and logo files
  launcher/            # C# portable launcher source
  patches/             # Upstream LibreWolf patches
  themes/              # Upstream LibreWolf branding/themes
  scripts/             # Upstream LibreWolf build scripts
  l10n/                # Localization files
  .github/workflows/   # CI/CD build pipeline
  build-portable.ps1   # Main build script
  installer.nsi        # NSIS installer script
  policies.json        # Enterprise policies (extensions, search engines)
  user.js              # Browser preferences

How It Works

1. Downloads the latest official LibreWolf portable zip from GitLab
2. Patches librewolf.cfg to fix common complaints (DRM, cache, RFP, etc.)
3. Injects custom policies.json for extension auto-install and Google default
4. Injects user.js with optimized preferences into the portable profile
5. Compiles a lightweight C# launcher (WolfPack.exe, ~5KB)
6. Packages as portable zip and NSIS installer

License

LibreWolf is licensed under the Mozilla Public License 2.0. This repackaging project adds configuration and build tooling only.