PDF Compressor — Compress PDF Files Online Free
Compress PDF files online free, no signup required.
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Max 1 MB • Up to 100 pages • 🆓 Free
PDF Compression FAQ
How do I compress a PDF file online for free?
Upload your PDF to our free online PDF compressor, select a compression mode (Light, Balanced, Strong, or Target Size), and click "Compress". Your compressed file is ready to download in seconds. No registration or software installation needed.
Can I compress a PDF without losing quality?
Yes! Our PDF compressor free online tool preserves quality while reducing file size. Light mode maintains near-original quality with 10-15% size reduction. Even Strong mode prioritizes readability — you control the quality-vs-size tradeoff.
What's the difference between compression modes?
Light (10-15% reduction) preserves maximum quality. Balanced (30-40%) offers the best quality-to-size ratio. Strong (50-70%) aggressively reduces file size. Target Size lets you compress to an exact percentage of the original — perfect when you need to reduce MB of PDF to a specific limit.
Is there a file size limit for the free PDF compressor?
Free tier supports files up to 1 MB with 1 compression per day. Pro users ($1.99/month) can compress PDF files up to 100 MB with unlimited daily compressions. Both tiers support documents with 100+ pages.
How do I reduce PDF MB for email attachments?
To reduce PDF size for email: upload your file, select "Balanced" or "Strong" mode, and compress. Most email services limit attachments to 10-25 MB. Our PDF compressor can easily reduce a 20 MB PDF to under 5 MB — perfect for emailing documents.
Compress PDF for Every Need
📧 Compress PDF for Email
PDF too large for email? Reduce file size to fit Gmail (25MB), Outlook (20MB), and Yahoo (25MB) attachment limits. Most business emails stay under 5MB — compress your PDF to fit.
Learn more →📄 Compress Scanned PDF
Scanned documents are notoriously large (5-50MB per scan). Our PDF compressor reduces scanned PDF size by 50-70% while keeping text readable. Use Strong mode for best results.
Learn more →📤 Reduce PDF Size for Upload
Online forms, job portals, and government sites often limit uploads to 100KB-5MB. Compress your PDF to meet any upload requirement — use Target Size mode for precision.
Learn more →📏 Compress PDF to Specific Size
Need to compress to exactly 100KB, 500KB, or 1MB? Our Target Size mode lets you compress to any specific file size.
View size guides →