Compress PDF

Compress PDF files online with ProPDF. Reduce PDF file size instantly with our fast, secure PDF compressor. It’s free, reliable, and works on every device.

Supports: PDF, JPG, JPEG, PNG, DOC, DOCX, XLS, XLSX, PPT and PPTX.Free up to 200MB. Premium users up to 4GB.

ProPDF makes it easy to compress PDF files online and reduce PDF size without losing clarity. Whether you want to shrink a PDF for email, upload a large document, or share a smaller PDF, our free PDF compressor gives you fast and accurate results. No installation or sign-up is needed. Just upload your file, select your compression level, and download a smaller PDF in seconds.

  • ✓Encrypted transfers
  • ✓Auto file deletion
  • ✓No watermarks
  • ✓Works on all devices

Why Choose ProPDF Compress PDF Tool

  • Fast PDF Compressor

    ProPDF reduces PDF file size in seconds. Upload your document and quickly shrink large PDF files. Whether you're emailing forms, uploading reports, or archiving documents, our PDF compressor provides a smaller file faster.

  • Compress PDF Free

    ProPDF is a completely free PDF compressor. You can compress PDFs online without limits or registration. It’s the easiest way to reduce a PDF file size for sharing or storage.

  • High Quality Compression Output

    Even when reducing PDF size, your document remains clear and readable. ProPDF keeps text sharp and images clean, striking the right balance between size and quality.

  • Secure and Private Compression

    Your files are encrypted during upload and deleted automatically after processing. ProPDF never stores or views your documents, ensuring a safe and trusted PDF reducer.

  • 100 Percent Online, No Software Needed

    Use ProPDF directly in your browser to compress PDFs online. No downloads or plugins are necessary. Reduce PDF file size from any device with a simple click.

  • Works on Any Device

    ProPDF works effortlessly on desktop, laptop, tablet, and mobile. Whether at home or on the go, you can make PDF files smaller from any device.

How to Compress PDF Files Using ProPDF

1

Upload your PDF files

Upload your document from your device or import it from Google Drive, Dropbox, OneDrive, or a direct URL. ProPDF supports batch uploads, allowing you to compress PDF files online quickly.

2

Choose Your Compression Level

Select high, medium, or low compression based on how small you want your PDF. High gives the smallest file, while low maintains the best quality. You can also use grayscale for extra reduction.

3

Click Compress

Click Compress, and ProPDF instantly reduces your PDF size. Our online PDF compressor works with all types of documents, whether you’re compressing scanned PDFs, graphics-heavy files, or simple text documents.

4

Preview and Download

Preview your compressed PDF to ensure everything looks right. Then download your smaller file or save it directly to Google Drive, Dropbox, or OneDrive.

Everything You Can Do Before You Compress PDF Files With ProPDF

Everything You Can Do Before You Compress PDF Files With ProPDF
  • ✓Reduce PDF size for email or website uploads
  • ✓Make a PDF file smaller without losing clarity
  • ✓Shrink large PDFs for faster sharing
  • ✓Convert PDFs to grayscale for extra compression
  • ✓Compress scanned PDFs efficiently
  • ✓Use high, medium, or low compression settings
  • ✓Compress multiple PDFs in one session
  • ✓Preview your file before downloading
  • ✓Save compressed PDFs to cloud storage

Your Privacy Is Safe With ProPDF

We built ProPDF with security in mind from the start. Every file you upload is protected with SSL/TLS encryption. Your documents are processed in a private, isolated environment and removed from our servers automatically after a few hours. We never store, reuse, or view your files for any reason.

Encrypted Transfers

Every upload and download goes through SSL/TLS encryption. Your file is secure from the moment you upload it to the moment you save it.

Auto File Deletion

Your files are deleted from our servers a few hours after processing. Nothing is kept, reused, or accessed after your session is done.

Isolated File Processing

Each file is handled in its own secure environment, completely separate from other users' files.

ISO-Certified Data Centers

ProPDF runs on data centers with 24/7 monitoring, advanced firewalls, and strict physical and network security standards.

Frequently Asked Questions

How do I compress a PDF for free?

Upload your document to ProPDF, choose your compression level, and click Compress. You can compress PDF files online for free, with no installation or registration required.

How do I make a PDF smaller?

Use the High or Medium compression settings to reduce the PDF file size. Converting to grayscale can further minimize PDF file size.

How do I reduce the size of a PDF without losing quality?

Choose Low compression. This keeps your document clear while still reducing file size.

How can I shrink a large PDF?

Upload it to ProPDF and select High compression. This significantly reduces size, especially for scanned or image-heavy PDFs.

Is ProPDF a safe PDF compressor?

Yes. All files are encrypted, processed securely, and deleted automatically after compression.

Will compressing a PDF affect the layout?

No. ProPDF preserves the document’s structure, text, images, and formatting.

Does ProPDF work for scanned PDFs?

Yes. Our engine efficiently compresses scanned documents, making them smaller without losing readability.

Can I compress PDFs on mobile?

Yes. ProPDF works on all mobile browsers, allowing you to compress PDF files on your phone or tablet.

What compression engine does ProPDF use?

ProPDF uses Ghostscript, a trusted PDF optimization technology known for effective size reduction.

Ready to reduce your PDF file size? Upload your document and compress it in seconds.

Developed by the team behindFreeConvert, trusted by millions worldwide, ProPDF delivers the same secure, dependable experience for handling your documents.