Compress PDF
Reduce PDF file size without losing quality.
or drop files here
How to Compress a PDF Online
- Upload the PDF file you want to compress by dragging it into the upload area or clicking to browse.
- Select your compression level: Low for minimal size reduction with maximum quality, Medium for balanced results, or High for maximum compression.
- Click "Compress PDF" to reduce the file size and download the optimized PDF.
When to Use This Tool
- Reducing large PDF reports or presentations to meet email attachment size limits.
- Optimizing scanned documents and image-heavy PDFs for faster web uploads and downloads.
- Shrinking archival documents to save storage space without sacrificing readability.
Features
- Three compression levels (Low, Medium, High) to balance quality and file size
- Two-stage compression engine using Ghostscript image resampling and structural optimization
- Typically reduces file size by 40-80% depending on content and selected level
- Preserves text clarity, vector graphics, and document structure
- Completely free with no signup — files auto-deleted after processing for your privacy
Frequently Asked Questions
Will compressing my PDF reduce the quality?
It depends on the compression level you choose. Low compression preserves nearly all visual quality while still reducing file size. Medium offers a good balance. High compression achieves maximum size reduction but may slightly reduce image sharpness.
What compression levels are available?
Three levels are offered: Low (gentle compression, best quality), Medium (balanced compression and quality), and High (maximum size reduction). Text and vector elements remain crisp at all levels; only embedded images are affected.
What is the maximum file size I can compress?
You can upload PDF files up to 100MB in size. The tool works best on image-heavy PDFs and scanned documents, which typically see the largest size reductions.
Is this compression tool free to use?
Yes, the PDF compressor is completely free with no signup or account required. Your files are processed securely and automatically deleted from our servers after one hour to protect your privacy.