compress-pdf
Adobe Acrobat

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How to compress a PDF file online for free with Adobe Acrobat

Follow these simple steps to compress a large PDF file in seconds:

Three documents in decreasing size showing how to compress a PDF
  1. Click the “Select a file” button above or drag and drop files into the drop zone.
  2. Choose the PDF file you want to shrink.
  3. After uploading, Acrobat will automatically reduce the size of the PDF.
  4. Sign in to download or share your compressed PDF.

Features of the Acrobat compressor tool

High-quality compression

Compress your PDFs without compromising quality, ensuring clear, print-ready results while maintaining content integrity for seamless digital sharing and printing.

Web browser compatibility

Our compress PDF tool is compatible with a variety of web browsers, including Google Chrome, Microsoft Edge, and Firefox, ensuring seamless access and functionality across platforms.

Security

Adobe Acrobat automatically deletes your uploaded PDFs from its servers after processing, unless you save them by signing in to your account, ensuring you retain full control over your files and data.

Advanced customisation

Choose your preferred compression settings, including image quality, compression type, and level, to ensure your PDF meets your specific requirements for both size and clarity.

Try our PDF compressor tool for free

A file being reduced in size

Reduce PDF file sizes online

The Adobe Acrobat Compress PDF online tool lets you compress PDF files right from your browser. Use our PDF compressor to make large files smaller and easier to share. Try Adobe Acrobat Pro for free for seven days to reduce the size of your PDFs.

A compressed PDF file that can be easily shared

An easy PDF compressor

Drag and drop or upload a PDF document to let Acrobat complete the file size reduction. You can then work with, share or store the compressed file more easily.

An Acrobat PDF with a measurement bar showing you can choose your compression level

Choose your compression level

You can select between High, Medium, and Low-compression. Select High if you want to decrease PDF size to the smallest amount, and Medium or Low if you want to reduce the PDF size but maintain a higher file quality.

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Share files online

By compressing files, you make them much easier to share. If you email a file, the smaller size can help you to avoid email file size limits and uploads are faster too.

An Acrobat PDF with a lock demonstrating file security you can trust

File security you can trust

Security is paramount to Adobe. If you don't sign in or save your file, it will be deleted from our servers to respect your privacy. Security measures are also built into every PDF created with Acrobat.

A high-quality compressed PDF file

Reliable PDF compressor

Adobe invented the PDF format and delivers high-quality online tools. Try our free tool to compress a file in any web browser, including Microsoft Edge or Google Chrome.

Compress different types of PDF files

Image-only PDF or scanned PDF

These PDF files contain images or are created from previously scanned documents. You can use Acrobat to reduce the size of your file and compress PDF to 100kb or less.

Searchable PDF

Certain documents contain text that can be selected, copied, and highlighted once the file is scanned using optical character recognition (OCR) software.

Digitally created or true PDFs

These PDFs contain both images and text, and are created using Microsoft Excel, Word, or PowerPoint.

Questions about PDF compression? We have answers.

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