CBZOptimizer

CBZOptimizer is a Go-based tool designed to optimize CBZ (Comic Book Zip) and CBR (Comic Book RAR) files by converting images to a specified format and quality. This tool is useful for reducing the size of comic book archives while maintaining acceptable image quality.

Note: CBR files are supported as input but are always converted to CBZ format for output.

Features

• Convert images within CBZ and CBR files to different formats (e.g., WebP).
• Support for multiple archive formats including CBZ and CBR (CBR files are converted to CBZ format).
• Adjust the quality of the converted images.
• Process multiple chapters in parallel.
• Option to override the original files (CBR files are converted to CBZ and original CBR is deleted).
• Watch a folder for new CBZ/CBR files and optimize them automatically.

Installation

1. Clone the repository:

git clone https://github.com/belphemur/CBZOptimizer.git
cd CBZOptimizer

2. Install dependencies:

   go mod tidy
   

Usage

Command Line Interface

The tool provides CLI commands to optimize and watch CBZ/CBR files. Below are examples of how to use them:

Optimize Command

Optimize all CBZ/CBR files in a folder recursively:

go run main.go optimize [folder] --quality 85 --parallelism 2 --override --format webp --split

Watch Command

Watch a folder for new CBZ/CBR files and optimize them automatically:

go run main.go watch [folder] --quality 85 --override --format webp --split

Flags

• --quality, -q: Quality for conversion (0-100). Default is 85.
• --parallelism, -n: Number of chapters to convert in parallel. Default is 2.
• --override, -o: Override the original files. For CBZ files, overwrites the original. For CBR files, deletes the original CBR and creates a new CBZ. Default is false.
• --split, -s: Split long pages into smaller chunks. Default is false.
• --format, -f: Format to convert the images to (e.g., webp). Default is webp.

Testing

To run the tests, use the following command:

go test ./... -v

Requirement

Needs to have libwep installed on the machine if you're not using the docker image

Docker

ghcr.io/belphemur/cbzoptimizer:latest

GitHub Actions

The project includes a GitHub Actions workflow to run tests on every push and pull request to the main branch. The workflow is defined in .github/workflows/go.yml.

Contributing

1. Fork the repository.
2. Create a new branch (git checkout -b feature-branch).
3. Commit your changes (git commit -am 'Add new feature').
4. Push to the branch (git push origin feature-branch).
5. Create a new Pull Request.

License

This project is licensed under the MIT License. See the LICENSE file for details.