Compress PDF

Optimize one PDF or batch-process many, entirely in your browser. Pick lossless structure optimization or strong image compression.

Processed on your device · nothing uploadedMay not always shrink

Drag & drop PDF files here

Or click to select files from your computer

100% Client-Side

Privacy architecture

Compression runs locally with pdf-lib and pdf.js. Strong mode rasterizes pages to JPEG on-device — nothing is ever uploaded, and you always see the exact before/after size.

Zero-upload guarantee