Compress PDF
PDF → PDF
Shrink PDF file sizes up to 90% without compromising visual quality. Our local optimizer subsets fonts and downsamples images directly on your device.
About this tool
About Compress PDF
Compress PDF is a free, browser-based tool that lets you shrink PDF file sizes up to 90% without compromising visual quality. Our local optimizer subsets fonts and downsamples images directly on your device. It supports PDF → PDF. Everything runs locally on your device, so your files are never uploaded to a server. There's no sign-up, no watermark, and no limit — just open Compress PDF, add your input, and get results instantly.
How to use Compress PDF
1
Upload Large PDF
Select the oversized PDF you want to shrink.
2
Select Compression Level
Choose between Low, Medium, or Extreme compression.
3
Download Compressed PDF
Save your newly optimized, lightweight file.
Key features
Zero Upload Times
Skip the wait. Large files compress instantly because they are processed locally.
Smart Downsampling
Images are optimized to the perfect DPI for screen viewing without noticeable artifacts.
Font Subsetting
Strips unused font characters to drastically reduce overhead while keeping text crisp.
100% Private
Compress PDF processes your data locally in the browser. Nothing is uploaded, tracked, or stored u2014 your files never leave your device.
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