Compress PDF
Reduce a PDF’s file size by recompressing its pages. Choose a preset, or tune DPI and JPEG quality yourself and compare the result before deciding what to keep.
How it works
- 1
Pick a compression level
Light keeps quality high, strong makes files tiny.
- 2
Adjust if you need to
Lower DPI means smaller files but softer text.
- 3
Compare and save
You see the exact size saving before you save.
Your privacy is the point
This tool runs entirely in your browser using WebAssembly and Canvas. Your file is never uploaded to a server, never stored and never seen by anyone but you.
Frequently asked questions
Why does my compressed PDF lose selectable text?+
Strong compression rebuilds each page as an image, which is what makes the file small. Use the lossless option if you need to keep searchable text.
Which level should I choose?+
Balanced works for most scanned documents. Use light for anything with fine print, and strong only for previews or archiving where quality is secondary.
Related tools
All toolsEverything runs locally. No uploads, no server-side copies.