Skill: Screenshot Compression

Compress screenshot images (PNG/JPEG) in place while keeping the original format. Uses pngquant for PNG and jpegoptim for JPEG — both are highly effective for screenshot content (UI elements, text, flat colors).

Prerequisites: pngquant and jpegoptim must be installed on the system. The script will not install them automatically — it checks for their presence and prints install instructions if missing.

When to Use

The user has screenshot files that are too large and wants to reduce file size without changing format. Common scenarios:

• Preparing images for GitHub READMEs, blog posts, or documentation
• Reducing image sizes before committing to a repository
• Batch compressing a directory of screenshots

Why Keep Original Format (Not WebP)