C2PARemover CLI

A command-line tool for detecting and removing C2PA (Content Authenticity Initiative) metadata from JPEG and PNG images.

Installation

Install as .NET Tool

# Install from NuGet dotnet tool install -g C2PARemover.Cli # Or install from a local package dotnet tool install -g --add-source ./nupkg C2PARemover.Cli

Build from Source

# Build the tool dotnet build C2PARemover.Cli/C2PARemover.Cli.csproj # Run directly dotnet run --project C2PARemover.Cli/C2PARemover.Cli.csproj -- check image.jpg

Usage

Check for C2PA Metadata

c2paremover check image.jpg

Output:

• ✓ No C2PA metadata found (exit code 0)
• ⚠️ C2PA metadata detected (exit code 1)

Remove C2PA Metadata

c2paremover remove image.jpg

This creates a cleaned copy as image.jpg.cleaned.jpg and verifies the removal.

Check Directory

c2paremover check-dir /path/to/directory

Scans all JPEG and PNG files in the directory and reports which ones contain C2PA metadata.

Packaging as .NET Tool

Create NuGet Package

# Pack the tool dotnet pack C2PARemover.Cli/C2PARemover.Cli.csproj -c Release # The package will be created in: C2PARemover.Cli/bin/Release/C2PARemover.Cli.1.0.0.nupkg

Publish to NuGet

# Publish to NuGet.org (requires API key) dotnet nuget push C2PARemover.Cli/bin/Release/C2PARemover.Cli.1.0.0.nupkg --api-key YOUR_API_KEY --source https://api.nuget.org/v3/index.json

Install from Local Package

# Create package dotnet pack C2PARemover.Cli/C2PARemover.Cli.csproj -c Release # Install from local package dotnet tool install -g --add-source ./C2PARemover.Cli/bin/Release C2PARemover.Cli

Update Tool

dotnet tool update -g C2PARemover.Cli

Uninstall Tool

dotnet tool uninstall -g C2PARemover.Cli

Examples

# Check a single image c2paremover check photo.jpg # Remove C2PA from an image c2paremover remove photo.jpg # Creates: photo.jpg.cleaned.jpg # Check all images in a directory c2paremover check-dir ./images

Exit Codes

• 0 - Success (no C2PA found, or removal successful)
• 1 - C2PA detected, or error occurred