File compressor

Drag and drop a PDF into our compressor to reduce its file size.
Select a PDF and use our compressor to reduce its file size.
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Join 750M+ monthly users getting more done with Acrobat.

How to compress files online

Use the Acrobat online file compressor to reduce the size of your PDF without downloading software. It’s a quick way to create smaller, more manageable files for email, storage, and collaboration.

Follow these simple steps:

  1. Upload from your device or drag and drop your PDF file above.
  2. Choose your preferred compression level, if available.
  3. Acrobat compresses your file automatically in just a few moments.
  4. Download your smaller PDF, or sign-in to continue working with your PDF files.
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Combine PDF files anytime, anywhere

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Questions about the file compressor? We have answers.

What is a file compressor?
A file compressor reduces the size of a file, making it easier to store, upload, and share. The Acrobat online file compressor is designed specifically for PDFs, helping you create smaller files while maintaining document quality.
Do I need to install software?
No. The Acrobat file compressor works in your web browser, so you can compress PDFs online without downloading or installing any software.
Will compressing my PDF affect its quality?
Acrobat is designed to reduce file size while preserving the quality of your document whenever possible. The appearance of text, images, and layouts is maintained, although results may vary depending on the file and selected compression settings.
Can I compress PDF files on my phone or tablet?
Yes. You can compress PDFs from your smartphone or tablet using a supported web browser, making it easy to reduce file sizes wherever you are.
Is it secure to compress files online?
Adobe uses secure online processing when compressing PDF files. For more information about file handling, storage, and privacy practices, refer to Adobe’s security and privacy policy.
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Try our free file compressor

Shrink large PDF files directly in your browser with no software installation required. Acrobat helps you reduce file size quickly while preserving the professional appearance of your documents.

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Make sharing easier

Compress PDFs before attaching them to emails, uploading assignments to learning platforms, submitting forms to government websites, or sharing project files with colleagues.

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Save storage space

Compressing files helps free up valuable storage on your device or in the cloud without deleting important documents. It’s an easy way to organize and manage your files more efficiently.

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Preserve document quality

Acrobat is designed to reduce file size while maintaining the readability of text, images, and formatting, so your compressed PDFs remain professional and easy to use.

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Work with PDFs anywhere

Compress PDFs from your desktop, laptop, tablet, or smartphone using a supported web browser. Whether you’re working from the office, at home, or on the go, your files are always within reach.

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Keep your workflow moving

It’s quick to upload your file and begin compression. Less load time means it's quicker to move on to your next task and keep your projects moving.

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More PDF features

Edit, organize, and sign your PDFs with all the online tools that Acrobat has to offer. You can combine multiple files into a single PDF, convert to other file formats, and protect sensitive information by adding password protection.

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Use Acrobat tools for free

  • Sign in to try 25+ tools, like convert or compress
  • Add comments, fill in forms, and sign PDFs for free
  • Store your files online to access from any device

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