Reduce PDF Size Free — Lossless Online Compression Tool
Reduce PDF file size without losing quality. Free online PDF size reducer — intelligent compression with 3 quality levels. No signup required.
When to Reduce PDF File Size
PDF size reduction solves many everyday file management problems:
- Reducing email attachments below the 25MB Gmail limit
- Making PDFs small enough for government and legal portal uploads
- Optimizing PDFs for faster web page loading
- Reducing storage consumption on your device or cloud drive
- Making PDFs faster to load on mobile devices
- Preparing PDFs for WhatsApp, Telegram, or Slack sharing
- Reducing invoice and contract PDFs for email delivery
- Archiving documents in a space-efficient format
How to Reduce PDF File Size — Step by Step
- Upload Your PDF: Drag and drop your PDF or click to upload. Files of any size are accepted.
- Select Compression Level: Choose Low (20–40% size reduction, excellent quality), Medium (40–70% reduction, good quality), or High (70–90% reduction, acceptable quality for email).
- Download Reduced PDF: See the before/after size comparison, then download your smaller PDF instantly.
Frequently Asked Questions
What is the difference between Low, Medium, and High compression?
Low: 20–40% size reduction with near-original quality. Best for print-ready documents. Medium: 40–70% reduction, good quality for screen and email. High: 70–90% reduction, optimized for email attachments and uploads where size matters more than perfect quality.
Will reducing PDF size affect text quality?
No — PDF text is vector-based and is not affected by compression settings. Only embedded images are compressed. Text remains crisp and selectable at all compression levels.
What is the maximum file size I can upload?
No hard limit. Large PDFs may take a few extra seconds to process, but all file sizes are supported.
Can I reduce a password-protected PDF?
Password-protected PDFs cannot be modified until unlocked. Use our Unlock PDF tool to remove the password first, then reduce the size.
How much will my PDF be reduced?
Results depend on content. Image-heavy PDFs typically reduce by 50–80%. Text-only PDFs may only reduce by 10–30% since they're already efficient.