Compress PDF Files Online for Free

Reduce PDF sizes dramatically while keeping document structures, texts, and styling intact. Secured processing runs completely local on your device CPU.

No Registration

Local processing sandbox

Adaptive DPI options

Batch Support

Drag & Drop PDF Documents Here

or click to browse files

Supported formats: PDF (unlocked documents)

Selected PDFs

0 files (0 KB)

Add More Documents

settings

Compression Ratio

Recommended Compression Good quality, great size savings (150 DPI)

Extreme Compression Lower quality, maximum size savings (90 DPI)

High Quality Compression Excellent image details, modest savings (220 DPI)

Client-side compression converts complex vector layers and heavy embedded images to Web-Optimized image containers dynamically.

Fast Parsing

Adaptive image processing scales DPI layouts instantly inside your window threads.

100% Private

Runs safely inside a local sandbox. Documents never touch outer network targets or API limits.

Mixed Page Tracking

Supports documents containing mixed dimensions, orientation blocks, and complex landscape layouts cleanly.

Batch Compression

Optimize multiple PDFs in parallel. The tool compiles batch tasks automatically into single ZIP directories.

How to Compress PDF Files

Upload Documents

Choose or drop your large PDFs here.

Pick Compression

Select target resolution presets (DPI settings).

Process Offline

Wait as the PDF elements are parsed locally.

Download PDF

Save optimized, lightweight PDFs instantly.