Compress PDF Online
Reduce PDF file size quickly while maintaining document readability.
This online PDF compressor helps you optimize PDF documents for email attachments, website uploads, and document storage.
Upload your PDF file, choose a compression level, and download a smaller optimized file within seconds.
Free online tool · Secure processing · Works directly in your browser
Compress Your PDF
✔ Key Features
- Fast Compression
- Adjustable Compression Levels
- Works on Any Device
- Privacy Friendly
How to compress PDF
- Upload your PDF file
- Select the compression level
- Click Compress PDF
- Download the compressed file
Why Compress PDF Files?
Large PDF documents can be difficult to share or upload. Many websites, email services, and government portals have file size limits. Compressing your PDF reduces file size while keeping the document readable.
Common reasons to compress PDF files include:
- Sending PDF documents as email attachments
- Uploading files to online portals or government websites
- Reducing PDF storage space
- Optimizing scanned documents
- Sharing documents quickly online
How to Compress a PDF
- Upload your PDF file using the tool above.
- Select a compression level (Low, Medium, or High).
- Click Compress PDF.
- Download your compressed PDF instantly.
The compression process usually takes only a few seconds depending on file size.
Tips for Best Results
- Scanned PDFs usually compress more effectively than text-only PDFs.
- Use Low compression when document quality is important.
- Use High compression when you need the smallest possible file size.
- Remove unnecessary pages before compressing large documents.
- For email attachments, try medium compression for a good balance between size and quality.
Frequently Asked Questions
Is this PDF compressor free?
Yes. You can compress PDF files online for free without installing any software.
Are my files secure?
Yes. All processing happens locally in your browser. Your files are not uploaded, stored, or shared with any server.
Will compression reduce document quality?
Compression reduces file size while keeping the document readable. Higher compression levels may slightly reduce image quality, especially for scanned documents.
What types of PDFs compress the most?
Scanned PDFs and image-based PDFs usually compress the most because they contain large images that can be optimized.