Back to Skills

PDF Compress

Reduce PDF file size while maintaining acceptable quality

196stars50forksUpdated 6/8/2026

Security Assessment

Safe(100/100)
Security Score100/100

About PDF Compress

PDF Compress is an AI-driven skill designed to reduce the file size of PDF documents while maintaining an acceptable level of quality. Large PDF files can be cumbersome for sharing, slow to load, and inefficient in storage, especially when dealing with multiple documents or limited bandwidth. This skill addresses these challenges by applying targeted compression techniques to optimize PDFs, making them easier to distribute, view, and store without compromising essential content or readability.

The skill offers a range of capabilities, including file compression, optimization, and batch processing. Users can select from predefined compression levels that balance quality and file size according to their needs, such as high-quality preservation for print or maximum reduction for quick previews. Compression techniques include image optimization through resolution reduction and format conversion, as well as content optimization like font subsetting, metadata cleanup, and optional removal of hidden elements or annotations. A detailed output report summarizes the compression results, providing users with insights into file size changes and quality impact.

PDF Compress is suitable for a variety of use cases and target audiences, including office professionals, educators, and individuals managing large document archives. Typical scenarios include preparing PDFs for email attachments, web distribution, print production, or long-term archiving. The skill supports English and Chinese languages and is compatible with several AI models, ensuring broad accessibility. Its structured presets and customizable options make it ideal for users seeking an efficient, reliable way to manage PDF sizes without manual intervention.

FAQ

How do I compress a PDF using this skill?

You can use simple commands like 'Compress this PDF to reduce file size' or specify targets such as 'Compress this PDF to under 5 MB'. You can also choose quality levels like high, medium, or maximum compression depending on your needs.

Which AI models are compatible with PDF Compress?

The skill is recommended for claude-sonnet-4 and claude-opus-4, and it is also compatible with claude-3-5-sonnet, gpt-4, and gpt-4o.

Can I compress multiple PDF files at once?

Yes, the skill supports batch compression, allowing you to process multiple PDFs efficiently while maintaining chosen quality settings.

What are the limitations of compression?

Higher compression levels can reduce visual quality, especially for images or detailed graphics. Some content removal options, such as deleting hidden layers or embedded files, should be used cautiously to avoid losing important information.

Which languages does PDF Compress support?

The skill supports English and Chinese for input commands and interactions.

Install PDF Compress

Download and extract the skill files to your .claude/skills/ directory.

Quick Setup:

  1. Copy the skill folder to .claude/skills/
  2. Claude will automatically detect and use the skill