01 / Fast steps
- Choose Extreme, Recommended or Low compression.
- Upload a PDF file.
- Compress it on the server pipeline.
- Download the optimized PDF.
Compress PDF
Reduce PDF size while keeping the workflow ready for conversion, sharing and archiving.
drop your files anywhere in this area
Files are processed on our EU server and deleted immediately after.
PDF
02 / Best for
- Send documents under email limits.
- Prepare files for portals.
- Reduce storage footprint.
03 / Why here
- Server-side compression that recompresses embedded photos, no native binaries required.
- Modes for maximum savings, daily use and professional quality.
- Pairs with PDF conversion and archive tools.
04 / Keep in mind
- Compression results depend on images, fonts and embedded resources inside the PDF.
- Works best on photo-heavy PDFs; text-only documents see smaller size reductions.
Tool connections
Related tools
Just converted a file here? Click a tool that reads it and your new file is handed over automatically, no re-upload needed.
01PDF to PNGConvert every PDF page into a sharp, lossless PNG image, right in your browser.02Merge PDFCombine multiple PDF files into a single document, in the order you pick them, without uploading anything.03Sign PDFDraw your signature and place it on any page of a PDF, entirely in your browser: the document is never uploaded.04Rotate PDFRotate every page of a PDF by 90, 180 or 270 degrees, entirely in your browser.05Organize PDFReorder, rotate and delete PDF pages visually, entirely in your browser, so the file is never uploaded.06Watermark PDFStamp a diagonal text watermark like CONFIDENTIAL or DRAFT across every page of a PDF, in your browser.
Good to know
Questions & answers
01Why are scanned PDFs so much larger than digital ones?
A digital PDF stores text as text, a few bytes per word. A scan stores a full photograph of every page, so the file size is dominated by images. That is also why compression works so well on scanned documents.
02Which compression mode should I use?
Recommended is the default balance. Extreme maximizes size reduction for uploads. Low keeps quality high for professional documents.
03Is Compress PDF free to use?
Yes, Compress PDF is completely free, with no sign-up and no usage limits. Files are processed securely on our server and deleted immediately afterward.