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Compress PDF

Reduce your PDF file size while maintaining quality

Compress PDF online quickly and reduce file size without losing quality. This tool helps you optimize large PDF files for email, sharing, or storage. Simply upload your PDF, compress it instantly, and download the optimized file.

How it works Instantly

Convert any file in 4 simple steps

1
Upload your file
Drag and drop or click to browse. Supports files up to 50 MB. Works from desktop, tablet, or mobile.
2
Choose your output format
Select from the available output formats. Options are filtered to what makes sense for your input file type.
3
Click Convert
Processing happens on our secure servers. Most conversions complete in under 10 seconds.
4
Download your file
Your converted file downloads directly. Both input and output files are deleted automatically after 2 hours.

All formats we support

PDF documents
PDF → DOCXPDF → XLSXPDF → JPGDOCX → PDFXLSX → PDFJPG → PDF
Convert PDFs to editable formats or create PDFs from Office documents and images.
Images
JPG → PNGPNG → JPGAny → WebPAny → GIFAny → BMPAny → AVIFAny → ICO
Convert between all major image formats with quality and resize controls.

What makes this converter different

No software needed
Works in your browser. Nothing to install. Works on Windows, Mac, Linux, iOS and Android.
Privacy first
Uploaded over HTTPS. Files deleted after your session. We never share your files.
High quality output
Powered by LibreOffice, Sharp, and pdf-lib — the same engines used by enterprise tools.
No hidden limits
Up to 50 MB per file. No watermarks. No premium plans. Free means free.
Fast processing
Most conversions finish in under 10 seconds. No queue, no waiting.
Mobile friendly
Full converter on phones and tablets. Upload from camera roll, download directly.

Tips for best results

PDF to Word: PDFs with selectable text convert far better than scanned documents. Scanned PDFs need OCR for editable output.
Reduce image size: Convert JPG or PNG to WebP to reduce file size by 25–35% with no visible quality loss — ideal for websites and email.
Images to PDF: Use JPG to PDF to combine multiple images into one document — great for sharing photo albums or scanned paperwork.
Compress PDF: Use Compress PDF before emailing large files. Typically reduces size by 30–60% with no visible quality change.

Frequently asked questions

Is this Compress PDF tool free to use?
Yes, our Compress PDF tool is completely free. You can reduce the size of your PDF files without any hidden charges or watermarks.
Are my PDF files secure during compression?
Yes, your files are uploaded over secure HTTPS connections. All PDFs are processed temporarily and automatically deleted after processing to ensure your privacy.
How much can I reduce the PDF file size?
File size reduction depends on the content of your PDF. Typically, compression can reduce file size by 30% to 70% without noticeable quality loss.
Will compressing a PDF affect its quality?
Our tool is optimized to maintain high quality. However, higher compression levels may slightly reduce image clarity inside the PDF.
What is the maximum file size allowed?
You can upload PDF files up to the supported limit (usually 50 MB). For larger files, you may need to compress them in parts.
Can I compress PDF files on mobile devices?
Yes, the Compress PDF tool works on all devices including smartphones and tablets. You can upload, compress, and download files directly on your device.