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Compress PDF
Compress PDF files online easily with our free PDF compressor. With our PDF tools, you’ll get things done better, faster, and smarter.
- Reduce PDF file size by up to 99%
- GDPR compliant and ISO/IEC 27001 certified
- 100% browser–based PDF size reducer
Were you looking for Shrink PDF, Reduce PDF Size, or PDF Compressor instead?
Best Online PDF Compressor
Our Compress PDF tool is an online tool for compressing large PDFs online for free. Whether you need to optimize PDF documents for smoother emailing, quicker sharing, or more efficient storage, you’ll be ready to go in seconds.
Flexible PDF Compression Options
Enjoy quick, professional results every time. Choose between two compression levels—Basic and Strong—to reduce the size of your PDF file size without compromising document quality.
How Does PDF Compression Work?
Our tool uses advanced algorithms to analyze and streamline your document. By removing repetitive patterns and re-encoding large images, we achieve a high-quality yet smaller PDF file size. Done in a flash, so you can get work done even faster.
Easy Sharing Once You’re Done
After reducing your file size, sharing your PDF with clients or teammates is seamless. Save it directly to Google Drive, Dropbox, or your Smallpdf account, or download and share it through other channels.
How To Compress PDF Online for Free
- Import or drag & drop your PDF file into our compressor.
- Choose between Basic and Strong compression, then click “Compress”.
- If needed, edit the PDF using our other tools.
- Download or share your compressed file once it’s ready—done!
Work Faster With Smaller PDF Files
Start Immediately—No Fuss
No need to install or learn new software. Just upload your files, and our tool takes care of the PDF compression, giving you compressed files without hassle.
Compress Files on Any Device
Our cloud-based system works across all devices, so you can reduce your PDF file size online via any browser, using Mac, Windows, Linux, iOS, Android, or any other OS.
Compress Other File Formats
Need to compress more than PDFs? Use the tool’s functionality to compress other file types, including Word, PPT, Excel, JPG, PNG, GIF, and TIFF, giving you greater flexibility with all your files.
Data Regulation Compliance
We’re GDPR-compliant, meaning we’re transparent about how we store, collect, and process your personal information. This ensures our platform meets the highest standards of data protection.
Certified ISO/IEC 27001
Our ISO/IEC 27001 certification means we’re audited annually to ensure your information’s safety, security, and integrity. You can trust that we adhere to global best practices in information security.
High-Tech Encryption
Your documents are secure during every step of the compression process, thanks to TLS encryption technology. Even while working on files, our security protocols protect your data.
FAQs About Our PDF Compression Tool
Is this PDF compressor free to use?
Yes! Like our other tools, our compressor tool is free to use for reducing file sizes. Some usage limitations may apply, but you aren't 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 compress PDFs with my whole team?
Absolutely! Our Business and Team plans offer unlimited access to all Pro features for you and your team. Plus, you’ll benefit from flexible payment options and priority customer service. Contact our sales team for a custom quote tailored to your business.
Do I need a paid Smallpdf Pro account to compress files?
A Smallpdf Pro subscription isn’t required to compress your documents, though it offers added benefits. With Pro, you’ll have unlimited access to the compression tool plus all our other tools, so you can convert, e-sign, merge, split, and much more without restrictions.
How does reducing the PDF file size affect fonts?
Compressing your PDFs with our tool doesn’t alter fonts in any way. Your documents’ fonts will remain consistent and unaffected by the compression process.
Is the compress tool safe to use?
We’re committed to safety and security at Smallpdf. In addition to GDPR compliance, we’re ISO/IEC certified, undergo annual security audits, and employ TLS encryption to keep your information safe. Every time you compress a file, the process is fully encrypted, ensuring your data and documents are secure from start to finish.
Can I compress PDFs offline?
Yes, we offer apps for Windows, Android, and iPhone, so you can compress large PDF files offline or on the go.
Tutorials on PDF Compression
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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.