Upload PDF File to Compress
Select the PDF file you want to compress
1. Upload PDF
Select the PDF file you want to compress
2. Choose Quality
Select compression level based on your needs
3. Download Result
Get your compressed PDF instantly
PDF compression is essential for reducing file sizes while maintaining document quality. Our online PDF compressor offers three quality levels to suit different needs, from high-quality archival to maximum compression for email attachments. Learn how to optimize your PDFs efficiently.
Email Attachments
Most email providers limit attachment sizes to 25MB. Compress large PDFs to easily share documents via email without hitting size restrictions.
Faster Upload and Download
Smaller file sizes mean faster transfers. Compressed PDFs upload to cloud storage and download significantly quicker, saving time and bandwidth.
Storage Optimization
Save valuable disk space by compressing PDFs. This is especially important for businesses managing thousands of documents or users with limited cloud storage.
Website Performance
Compressed PDFs load faster on websites, improving user experience and SEO rankings. Smaller files reduce server load and improve page speed scores.
Mobile Accessibility
Smaller PDFs are easier to view on mobile devices with limited data plans and storage. Compressed files download faster on slower mobile connections.
Upload Your PDF File
Click the upload area or drag and drop your PDF file. Files up to 50MB are supported. Your file is processed securely and deleted after compression.
Select Compression Quality
Choose from High (best quality), Medium (balanced), or Low (smallest size) compression. Each option shows expected file size reduction and recommended use cases.
Compress Your PDF
Click the Compress PDF button and wait while our tool optimizes your file. The process typically takes just seconds, with real-time progress updates.
Download Compressed File
Review the compression statistics showing original vs. compressed size and reduction percentage. Download your optimized PDF instantly with a single click.
Secure & Private
All files are encrypted during upload and processing. All files are automatically deleted from our servers after compression. We never access, store, or share your documents.
Lightning Fast
Advanced compression algorithms process your PDFs in seconds. No waiting in queues - instant processing with real-time progress updates for all compression levels.
100% Free
No subscriptions, no hidden fees, no registration required. Compress unlimited PDFs completely free with no watermarks or restrictions on file size or usage.
Quality Control
Three compression levels let you balance file size and quality. Preview compression statistics before download to ensure optimal results for your specific needs.
What is the best compression level for my PDF?
For documents intended for printing or archival, use High quality compression. For general sharing and email attachments, Medium quality offers the best balance. Use Low quality for web viewing or when file size is critical and you can accept some quality reduction.
How much can I reduce my PDF file size?
Compression results vary based on original content. High quality typically achieves 10-30% reduction, Medium quality 30-50%, and Low quality 50-70%. PDFs with many images compress more than text-only documents. Our tool shows exact results before download.
Will compression affect PDF quality or readability?
High and Medium quality compression maintain excellent readability with minimal visible changes. Low quality compression may show slight image degradation but text remains clear. All compression levels preserve document structure, fonts, and searchability.
Is there a file size limit for compression?
You can compress PDFs up to 50MB in size. This accommodates most documents including those with extensive images and graphics. For larger files, consider splitting them first using our PDF split tool, then compress individual parts.
Are my files secure during compression?
Yes, absolutely. All files are encrypted during upload and processing using industry-standard SSL/TLS protocols. Compressed files are automatically deleted from our servers immediately after download. We never access, store, or share your documents.
Test Different Quality Levels
Try compressing the same file at different quality levels to find the optimal balance between file size and quality for your specific needs. Download and compare results.
Compress Before Sharing
Always compress PDFs before emailing or uploading to cloud storage. This reduces transfer time, saves bandwidth, and ensures compatibility with email attachment size limits.
Keep Original Files
Maintain backup copies of original uncompressed PDFs, especially for important documents. This gives you flexibility to recompress at different quality levels if needed later.
Consider Your Audience
Choose compression based on how recipients will use the file. Print shops need High quality, while Medium or Low quality works well for digital distribution and web viewing.
Batch Process Similar Files
When compressing multiple similar documents, use the same quality setting for consistency. This ensures uniform quality across your document collection and predictable file sizes.