The Acrobat online PDF compressor balances an optimised file size against the expected quality of images, fonts and other file content. Just drag and drop a PDF into the PDF compression tool above and let Acrobat reduce the size of your PDF files without compromising quality.

For more refined control of optimisation settings, you can try Adobe Acrobat Pro for free for seven days. Acrobat Pro lets you customise PPI settings for colour, grayscale and monochrome image quality. You can also use PDF editor tools, edit scans with OCR functionality, convert PDFs to Microsoft PowerPoint and other file formats, convert PNGs and other image file formats, organise and rotate PDF pages, split PDFs, optimise PDFs and more. You can use Acrobat on any device, including iPhones and on any operating system, including Mac, Windows, Linux, iOS or Android.

The Adobe Acrobat PDF compressor tool can handle large files, allowing you to compress PDFs up to 2 GB in size. This generous file limit is ideal for reducing the size of lengthy documents, high-resolution presentations, and image-rich files without sacrificing quality. Whether you’re working with a small document or a large project, Acrobat’s compressor provides a flexible solution for efficient file sharing and storage.

When you select a PDF to compress, the Acrobat PDF compressor tool will display your file’s current size immediately after uploading. You’ll also see the estimated size of the compressed file, depending on the compression level you choose - high, medium or low - so you can easily decide which option best balances file size and quality for your needs. This feature provides transparency and control, ensuring your final file meets your sharing, storage, or quality requirements.

After compressing a PDF using Adobe Acrobat's online tool, the new file size is displayed, allowing you to compare it with the original and verify the reduction.

Yes, Adobe Acrobat's compression tool is designed to reduce the file size of PDFs containing text, images, or graphics while maintaining as much quality as possible. The Acrobat PDF compression tool balances an optimised file size against the expected quality of images, fonts, and other file content.

Currently, the Acrobat online compressor processes one file at a time. For batch compression, Adobe Acrobat Pro offers tools to handle multiple files in a single operation.

Yes, you can use Acrobat's PDF compression tool on mobile devices. Adobe Acrobat's online services are accessible through any web browser, allowing you to compress PDFs on smartphones and tablets, as well as desktops. This flexibility enables you to manage your PDF files conveniently across various devices.