Compress PDF Online
Reduce PDF file size while maintaining crisp typography and clear images.
Drop your file here
ORSupported format: PDF
How to Use the PDF Compressor
Drop your large PDF document into the compression upload zone.
Select your compression level: Low (Best Quality), Medium (Recommended), or High (Smallest File).
Click "Compress PDF" to start the optimization process.
Inspect the calculated savings (e.g. "Saved: 68%").
Click "Download Compressed PDF" to save your lightweight file.
Key Features & Benefits
- Three calibrated compression presets: Low, Medium, and High
- Real-time size reduction metrics: Original size, Compressed size, and % Saved
- Optimizes embedded images, vector paths, and document streams
- Works directly in your browser with zero server data storage
- One-click "Compress Another PDF" reset flow for high-volume tasks
- Eliminates email attachment size bounce errors effortlessly
Security & Privacy Guaranteed
Your privacy is our priority. In-browser client-side processing means your documents are rendered locally on your device without transmitting data over the internet. Any server-assisted conversions are strictly sandboxed and permanently deleted immediately after processing.
Frequently Asked Questions
Which compression level should I choose?
We recommend the "Medium" compression level for 90% of documents. It typically cuts file size by 50% to 75% while keeping text sharp and images clear. Use "High" if you have strict email limit quotas.
Will compression make my document text blurry?
No. Standard text elements and vector fonts are preserved as scalable vector instructions. Only high-DPI raster images and redundant metadata streams are optimized.
Can I compress password-protected PDF files?
Encrypted or password-locked PDFs must have their security passwords removed before compression engines can re-encode internal streams.
Is there any risk of losing content?
No content or pages are removed. The compressor only optimizes encoding algorithms and downsizes redundant image data.
Does PDF compression cost anything?
Our PDF compression tool is completely free with no usage quotas.