[GUI Plugin] Image Optimizer

[tachibana-shin]

Image Optimizer is a Calibre plugin that allows you to batch compress and optimize images within your eBooks (EPUB/ZIP/AZW3/MOBI/CBZ/CBR...) to reduce file size without significant loss of quality.

Why Image Optimizer?
Compared to other plugins like Bulk Image Resizer, this plugin offers:

• Superior Compression: Uses advanced optimization algorithms to achieve significantly smaller output files while maintaining visual fidelity.
• Deep Optimization: While it may take slightly longer to process due to intensive compression techniques, the trade-off is a much more efficient storage reduction.
• Extreme Compatibility: Detects images by "magic bytes" (file headers), allowing it to optimize files even if they have incorrect or missing extensions—something most basic resizers cannot do.
• Modern Format Support: Extends beyond JPG/PNG to support AVIF, WebP, QOI, HDR, and many others.

Features

• Batch Processing: Select multiple books and optimize them in one go.
• Smart Detection: Automatically detects image formats based on file content (magic bytes), supporting files even with missing or incorrect extensions.
• Supported Formats: Handles a wide range of formats including JPEG, PNG, WEBP, GIF, BMP, TIFF, ICO, AVIF, QOI, HDR, OpenEXR, DDS, Farbfeld, and PNM.
• Configurable: Set target resolution, quality, and format conversion preferences.
• Non-Destructive: Creates a new book entry with the optimized files, keeping your originals safe.
• Multilingual: Supports English, Vietnamese, and Japanese.

Open source: https://github.com/tachibana-shin/image_optimizer

Thanks for read

[PeterT]

Please attach the plugin to the first message. Additionally review the Index of Plugins stickied thread in this forum and the section Notes for Plugin Developers

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[JSWolf]

Does this plugin do lossless compression to remove excess noise/metadata in the images?