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Compress PDF
Reduce the size of your PDFs online easily with our free PDF compressor. Our PDF tools are here to help you get things done—better, faster, smarter.
- Reduce file size up to 99%
- GDPR compliant and ISO/IEC 27001 certified
- TLS encryption for secure document processing
Our PDF tools are trusted by over 6,000 Businesses worldwide
Were you looking for Shrink PDF, Reduce PDF Size, or PDF Compressor instead?
Best Online PDF Compressor
Our Compress PDF tool was made for compressing large PDFs online for free. Whether you need to shrink files for easier emailing, sharing, or storage, you’ll be ready to go within seconds.
Flexible PDF Compression
Quick, professional results you can trust—every time. Choose from two compression levels to adapt your file size without ever compromising on document quality.
How Does PDF Compression Work?
We take your file, remove repetitive patterns, re-encode heavy images, and voilà—the result is a high-quality, but much lighter PDF. Done in a flash, so you can get work done even faster.
Easy Sharing Once You’re Done
Collaboration is essential for teamwork and getting things done. Once you reduce the size of your PDF, it’s super simple to share it with your team or a client. Just use our share feature to generate a quick download link.
How To Compress PDF Online for Free
- Upload your file by dropping it onto this page
- Select your desired compression level
- Continue to edit the PDF with our other tools if needed
- Click “Download” to save your compressed PDF
Work Faster With Smaller PDF Files
Start Immediately—No Fuss
Nothing to install, no training required. Get started immediately with the simplest tool to compress your files.
Compress Across All Devices
We’re cloud-based, so you can reduce your file size online via any browser and on any device, from desktop to tablet and mobile.
Compress Other File Formats
Compress more than just PDFs. Use the tool to reduce other file types, such as Word, PPT, Excel, JPG, PNG, GIF, and TIFF.
Data Regulation Compliance
Smallpdf is GDPR compliant, which means we’re transparent about how we store, collect, and process your personal data.
Certified ISO/IEC 27001
We’re ISO/IEC 27001 certified, so we’re audited annually to ensure the safety, security, and integrity of your information.
High-Tech Encryption
We keep your documents secure, even while you’re working on them, with state-of-the-art TLS encryption technology.
Plans & Pricing
Get unlimited access to Smallpdf to compress documents quickly. Includes 20 other document tools for getting work done—your way.
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FAQs About Our PDF Compression Tool
Is this document compression tool free to use?
Yes! All of our tools, including our tool to compress files, are free to use with certain limitations. You’re also not limited to only compressing PDFs; you can reduce the file size of other document types, like MS Office files, JPG, PNG, GIF, and TIFF. Simply drop your files into the tool to get started.
Can I get Compress PDF for my whole team?
Absolutely. We offer both Business and Team plans that give you and your team or business unlimited access to all our Pro features and more. You’ll also enjoy some added extras, such as flexible payment options and priority customer support. Feel free to contact our sales team for a custom quote.
Do I need a paid Smallpdf Pro account to compress files?
No, you don’t need a Smallpdf Pro subscription to compress your documents. That said, a Pro subscription will give you unlimited access to our compression tool, plus all our other tools, so you can convert, e-sign, merge, and split documents, and more—with zero limitations.
Is the compress tool safe to use?
At Smallpdf, we’re committed to safety and security. We’re GDPR compliant, undergo annual audits to earn our ISO/IEC certification, and carry advanced TLS encryption, which means that your data, personal information, and documents are safe with us. What’s more, each time you perform a task, like compressing a file, this entire process is fully encrypted for full-scale security.
Tutorials on PDF Compression
HOW TO COMPRESS PDF
Reduce PDF File Size Below 100 KB Online
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Compress PDF to 1 MB for Free
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Document Work Made Easy
Boost productivity in your business with unlimited access to all Smallpdf’s tools for taking the hassle out of document work. Do more, better, faster.