Image Compression Plus

The problem this addresses

In image workflows, teams often need to reduce file size from original PNG, JPG, or WebP assets without producing corrupt files, unusable formats, or unsupported output types such as BMP or GIF. images-compressor provides a clear compression entry point: process one input file or a directory, control quality from 1 to 100 with --quality, choose png, jpg, or webp output with --format, and write results to ./compressed/ by default.

How it works

The skill is built around Pillow for reading, compression, format conversion, and validation:

• Input handling: accepts a single image or directory for batch processing.
• Quality control: 85 is the default balanced setting; 90-100 suits archival use, 50-74 suits web use, and 1-49 suits thumbnails or previews.
• Format conversion: reads and writes PNG, JPG/JPEG, and WebP; BMP and GIF can be read but should be converted to a supported output format.
• Output validation: files are reopened after writing to reduce the risk of generated files that cannot be parsed.

Limits

It is suitable for static image compression and format normalization, not for animated GIF output, complex transparent PNG compositing, or unrelated image operations such as OCR, cropping, and resizing. For BMP or GIF inputs, expect the output to be PNG, JPG, or WebP.