Compress PDF Online
Reduce PDF file size while maintaining quality. Free, secure, and fast compression.
How to Compress PDF Files
Select Your PDF File
Click the upload area or drag and drop your PDF file. Files are processed securely and deleted automatically.
Choose Compression Level
Select Low for best quality, Medium for balanced compression, or High for maximum file size reduction.
Download Compressed PDF
Click "Compress PDF" and download your optimized file. Most PDFs compress by 40-70% while maintaining quality.
Frequently Asked Questions
Why is my PDF file so large?
PDFs can be large due to high-resolution images, embedded fonts, or uncompressed data. Our compression removes redundant data and optimizes images while preserving readability.
Will compression affect PDF quality?
Low and Medium compression maintain excellent quality for most use cases. High compression may slightly reduce image quality but text remains perfectly readable.
Is there a file size limit?
We support PDFs up to 100MB. Most documents compress in seconds, with larger files taking up to a minute.
Is my PDF secure?
Yes. Files are processed in encrypted memory and automatically deleted within 60 seconds. We never store or access your documents.
When should I compress PDFs?
Compress PDFs before emailing (most email services limit attachments to 25MB), uploading to websites, or sharing via cloud storage to save space and bandwidth.