Free Online Compress PDF – Reduce PDF File Size Without Losing Quality (Email & Upload Ready)

Compress PDF

Make PDFs smaller for email and upload limits, with a quality level, a target size and a before-and-after preview • 100% free • Your files never leave your device

Click to choose PDF files, or drag and drop them here

1. Compression method

Method Smart - keep text selectable, shrink embedded photos and scans Maximum - turn every page into an image (best for scanned documents) Compression level Light - best quality Balanced - recommended Strong Maximum Extreme - smallest file

2. Target size (optional)

Make the file no bigger than (MB)

With a target, the tool starts at your chosen level and tries stronger levels until the file fits. This suits email and upload forms that limit attachments.

3. Extras

Remove document info (title, author, dates and hidden metadata) Convert to black and white (Maximum method only)

Digitally signed PDFs lose their valid signature when compressed, because any change breaks a signature. Password-protected PDFs are not supported, so remove the password first.

Which method should I use?

Smart recompresses the photos and scanned pages inside your PDF and compacts the file. Text stays sharp and selectable. It works best on PDFs with camera photos or phone scans.

Maximum redraws every page as a compressed image. It gives the biggest savings on scanned documents and heavy PDFs, but text becomes part of the picture, so it can no longer be selected or searched.

Your files

Your PDFs are processed in your browser and are never uploaded. The open-source PDF engine (pdf-lib and pdf.js) is downloaded once and then cached by your browser.