Compress PDF
Shrink a PDF, or get it under an exact size.
Runs entirely in your browser. Verify it in your network tab.One file at a time.
For upload portals with a size limit. Tries lossless first, so text stays selectable whenever that is enough.
Recommended downsizes the photos and scans inside to 150 dpi and leaves text sharp and selectable. Extreme turns every page into a picture: smallest, but text can no longer be selected or searched.
For the images that get re-encoded.
What this does
Recommended mode works the way iLovePDF, Smallpdf and Acrobat do: the photos and scans inside the PDF are downsized to about 150 dpi and re-encoded, while text, fonts and drawings are left exactly as they were. Every mode then repacks the file structure with qpdf. With a target size, the tool tries lossless first, then shrinks images step by step, and only flattens pages to images if nothing else fits. If nothing makes the file smaller, you get the original back, never a bigger copy.
Limits
- A PDF that is mostly text and vector drawings has little to shrink without flattening; Extreme mode, or a target size, does that.
- Pages are never rendered below about 45 dpi. If a document cannot fit and stay readable, the tool says so instead of handing back an unreadable file. Splitting it first usually helps.
- CMYK, palette and 16-bit images are left untouched rather than risk a colour shift.
Is this private?
Yes, and you can check rather than take our word for it. Open your browser's network tab and run the tool: your file never appears in it, because there is no server to send it to. The whole site is static files.
