compress Compress PDF Files

Compress PDF files, supporting image compression, full document optimization, and grayscale compression modes, significantly reducing file size while maintaining high-quality reading experience.

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Compress PDF files, image compression, PDF grayscale compression, document slimming tool

PDF Generation Settings

Entering an expected value will automatically select the compression level.

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Frequently Asked Questions (FAQ)

Yes, our online PDF Compression tool is free to use forever, no registration, subscription, or software download required. We are committed to providing efficient and convenient document optimization services.

This tool compresses PDFs in the following ways:
  • Intelligently compresses embedded images (supports JPEG/PNG formats)
  • Optimizes PDF internal object structure, removes redundant information
  • Supports converting color images to grayscale to reduce size
All text, tables, charts, and other content will be completely preserved, without losing any critical information.

Currently, we offer a variety of compression options for you to choose from:
  • Compress Images Only: Retains text and structure, only compresses image parts
  • Standard Compression: Balances quality and size, suitable for most documents
  • Extreme Compression: Reduces file size to the maximum extent, suitable for archiving purposes
  • Grayscale Compression: Converts images to black and white mode, especially suitable for scanned contracts, invoices, and other documents

Your file security is our top priority. All uploaded PDF files will beimmediately deleted from the serverafter the operation is completed. We do not store or access any of your personal data and document content. The entire operation process is encrypted to ensure your privacy and security.

Yes, our online tool isfully compatible with various devices and operating systems. Whether you use a computer, phone, or tablet, as long as you have an internet connection, you can easily compress PDF files anytime, anywhere.

Currently, this tool supportsprocessing one PDF file at a timeto ensure the best operating experience and output quality. For batch processing needs, we are actively developing related functions, so please stay tuned for future updates!

This tool supports most standard PDF formats, including common types such as PDF/A, PDF/X, PDF/UA. As long as the file is not protected by DRM or special encryption, compression can be performed normally.