Private. Local. Zero Uploads.

Compress PDF

Make your PDF files smaller without losing quality. Choose from three levels of compression to save space.

Features

Three simple presets for size and quality

See exactly how much space you saved

No file size limits or daily caps

Private processing right in your browser

Works on all computers and smartphones

Keeps text and images looking great

No watermarks on your smaller files

Download your compressed PDF instantly

Drag your PDF file into the box or click to select a file from your device.

Select low for the best quality, balanced for a mix, or high for the smallest size.

Click the compress button. Your smaller PDF will download in a second.

Shrink PDFs to fit within email attachment size limits.

Make files smaller so they upload quickly to websites or job portals.

Reduce the size of your document collection to save space on your device.

Small files are much easier to send through chat apps or share with teams.

How much can I shrink my PDF?

Files with many images usually shrink by 40% to 80%. Files with mostly text shrink by 10% to 30%.

What level should I choose?

Use Low for the best quality. Use Balanced for most files. Use High if you need the smallest file possible.

Will my PDF look blurry?

No. Even at high compression, text stays sharp. Only high-resolution images are optimized to save space.

Is it safe for private documents?

Yes. Oxidize works on your computer. Your files are never sent to a server.