Compress PDF
Shrink a large PDF so it fits email and upload limits. Choose the quality and resolution, then download — all in your browser.
Drop a PDF to compress
runs in your browser — nothing is uploaded
Frequently asked questions
Each page is re-rendered at the resolution and quality you choose and rebuilt into a new PDF. This is most effective on scanned or image-heavy documents.
No. Because pages are rasterized to images, the output is a picture of each page rather than selectable text. Use it when you need a smaller file to email or upload.
No. The whole process runs in your browser using pdf.js and pdf-lib — your document never leaves your device.