Compress PDF
Reduce PDF size for faster sharing and storage.
Upload files
Choose a file and hit the action button to process it immediately.
Make a PDF smaller and easier to share
PDF compression reduces storage and transfer size by optimizing images and document data. The best setting depends on whether crisp visual quality or the smallest possible attachment matters most.
How to use Compress PDF
- Upload the PDF to optimize.
- Choose low, medium, or high compression.
- Select Compress PDF and compare the downloaded result.
Common reasons to use it
- Meeting email attachment limits
- Speeding up website uploads
- Saving space in a document archive
Before you start
Start by checking why the PDF is large. Scanned photographs usually offer more room for reduction than files made mostly from text and vector graphics. Remove unnecessary pages first so the compressor does not spend time optimizing material you do not need. Keep the original nearby because compression is an optimization step, not a substitute for a full-quality archive.
Quality and result checks
Low compression favors detail, medium aims for a practical balance, and high prioritizes a smaller download. Results vary because a PDF that is already optimized may shrink only slightly. Zoom into fine print, diagrams, signatures, and photographs after processing. If those elements look soft, repeat from the original with a less aggressive level rather than recompressing an already compressed copy.
Frequently asked questions
Why did my PDF shrink only a little?
It may already contain compressed images or mostly efficient text and vector data, leaving little redundant information to remove.
Does compression change page count?
It should optimize the existing document rather than remove pages. Always verify the downloaded file.
Which level should I choose?
Begin with medium. Choose low when detail matters most and high when meeting a strict upload limit is more important.