Compress PDFs online for quick sharing, fast uploads, and optimal storage—quality intact. The compressor is free to use and works directly in your browser.
Were you looking for Shrink PDF, Reduce PDF Size, or PDF Compressor instead?
Compress PDFs online for free, maintaining document quality. Reduce large files for easy sharing and storage in just a few clicks.
No waiting, no hassle—just drag, drop, and compress in seconds. Our tool automatically optimizes your PDF, so you don’t have to tweak settings manually. Works online on Mac, Windows, Linux, iOS, and Android.
Choose between Basic and Strong PDF compression levels to get the perfect balance for your needs. You’ll get a smaller file size without any visible loss of quality.
Your documents are encrypted with TLS security, GDPR-compliant, and ISO/IEC 27001 certified. Plus, we automatically delete files after one hour, so your data stays private.
Compress PDFs directly in your browser—no installations, sign-ups, or learning curves. Just upload, compress, and be on your way.
Use our cloud-based PDF compressor on Mac, Windows, iOS, Android, and Linux. Need to compress PDFs offline? Try the Smallpdf mobile app for iOS and Android.
Shrink PDFs, Word docs, Excel files, PowerPoint slides, JPGs, PNGs, GIFs, TIFFs, and more—all in one tool. You can convert between file types too.
Smallpdf fully complies with GDPR, so you know your information is private and in your control. Your data is your data.
Our ISO/IEC 27001 certification means your documents are protected by industry-leading security protocols. We’re audited annually to keep your files safe.
Every file you upload is protected with advanced TLS encryption. Rest assured your documents stay secure from start to compress to finish.
Absolutely! Our PDF compressor is free for file size reduction, similar to our other tools. You can also compress MS Office files, JPG, PNG, GIF, and TIFF images without quality loss. Note that usage limits may apply, and our "Strong" compression is a Pro feature. To begin, drag and drop your files into the tool above.
Yes! Our Smallpdf for Teams plan provides unlimited Pro access for your team. Enjoy 30+ PDF tools (edit, merge, convert, including AI) and flexible payment options for any team size.
A Pro subscription isn't needed for basic PDF compression. However, Pro offers unlimited access to all tools, including "Strong" compression, for maximum file size reduction without visible quality loss.
Nope! Compressing your PDFs with our tool doesn’t alter fonts in any way. Your document fonts will remain consistent and unaffected by the compression process. This means all text styles, sizes, and embedded fonts are fully preserved, maintaining the document’s professional appearance.
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.
Yes, our iOS and Android mobile apps allow you to compress large PDF files on the go so you can stay productive while traveling or working remotely.
The best PDF compressor shrinks file size without losing quality. Smallpdf’s Compress PDF tool does just that—offering fast, high-quality compression with Basic and Strong options to suit your needs. Plus, it comes with TLS encryption, GDPR compliance, and ISO/IEC 27001 certification. Try it for free—no sign-up needed!
Our tool analyzes your document, removes redundant data, and re-encodes large images to shrink file size—without sacrificing quality. It’s fast, efficient, and keeps your content intact.
HOW TO COMPRESS PDF
The best free online tool to compress large PDFs while maintaining file format and quality. No registration needed.
HOW TO COMPRESS PDF
Need to shrink a PDF file down to less than 1 MB for online submission? Let Smallpdf help you!
HOW TO COMPRESS PDF
Got a PDF file that’s too big? Here are three free tools that you can use to reduce your PDF size online through your browser, and locally on Windows or Mac.
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.