SMALLER FILES, NOTHING UPLOADED
Shrink a PDF down to size.
Drop in a PDF, pick how much to compress it, and download a smaller file in seconds. The whole thing runs on your own device, so the file never leaves your computer.
Drop a PDF here, or browse
One PDF at a time. Nothing is uploaded anywhere
A middle ground between file size and sharpness. Good for most documents.
Download your smaller PDF
Frequently asked questions
Yes, completely. No account, no watermark slapped on the result, no cap on how many files you run through it.
Each page gets redrawn at a lower resolution and saved as a compressed image, then all those pages are stitched back into a new PDF. That is a genuine size reduction, not a renamed copy pretending to be smaller.
No, and it is worth knowing that going in. Once a page becomes an image, whatever text was on it stops being selectable or searchable, even though it still reads like normal text to your eyes.
Balanced covers most files without you having to think about it. Reach for high compression when size is the whole point, and reach for best quality when the PDF has fine print or detailed images worth keeping sharp.
Usually because the original was already small or mostly plain text. Turning a simple text page into an image can eat more space than the text ever did. When that happens, the tool just hands you back the original instead of a worse copy.
No hard limit, though a very long PDF takes longer and leans harder on your device's memory while it works.
No. The whole thing gets read and rebuilt inside your browser, on your own device. It never leaves.
Not directly. The reader behind this tool cannot open a file locked with a password, so strip the protection first and then compress.
How this PDF compressor works
Every page of your PDF gets redrawn in the browser at a lower resolution and saved as a compressed image, then the whole thing is stitched back into a new PDF. That is what actually makes the file smaller. It does especially well on PDFs built from scans, photographed pages or screenshots, since those were already images and just get squeezed down more efficiently.
My honest opinion: do not reach for this if you need the text itself to stay selectable and searchable, because the text becomes part of an image along the way and there is no getting it back. Export a lighter PDF from whatever program made it instead, or just keep the original.
Nothing about your file leaves your device at any point. It gets read, redrawn and rebuilt entirely inside your browser, the same as everything else on this site.
Choosing a compression level
High compression gives you the smallest file, and it is the right call for long documents you mainly need to store or send quickly, where a little softness in a scanned page will not bother anyone. Balanced is the sensible default for most everyday PDFs. Best quality keeps pages sharper and the file bigger, which suits anything with fine print or detailed images worth protecting.
If the file also needs a line fixed or a note added before you shrink it, the PDF editor handles that, and why is my PDF so large covers the usual reasons a file balloons in the first place.