Make PDFs small enough for email and upload forms - the pictures inside shrink, the text stays sharp. Need to combine files first? Use Merge PDF.
Press Compress when your settings are ready. Sizes are measured on the real output.
Text, fonts and vector graphics are never blurred - only pictures are recompressed.
| Level | Pictures | Typical saving | Best for |
|---|---|---|---|
| Screen | 72 DPI, JPEG 40 | 70-90% | Email, chat, upload limits |
| Ebook | 150 DPI, JPEG 65 | 50-80% | Reading on laptops and tablets |
| Printer | 300 DPI, JPEG 85 | 10-50% | Printing at home or the office |
| Custom | 50-600 DPI, JPEG 10-95 | Your call | Hitting an exact size limit |
Savings depend on how many pictures your PDF holds - the numbers on each row are measured on your real file.
A PDF is only as big as what is inside it.
Big pictures are where the savings come from.
Phone scans at 300+ DPI often shrink by 80% or more.
Text is stored very efficiently already.
A Word export of 20 pages may only lose a few KB.
PDFs that went through a compressor before have little left to give.
We return the original rather than a bigger file.
Drop your PDF into the box above, keep the Ebook setting and press Compress. Each file shows its measured size before and after.
Press Download - or Download ZIP when you compressed three or more PDFs.
It depends on what is inside. PDFs full of photos or scans often shrink by 50-90%. PDFs that are mostly text are already small and change little.
You never get a bigger file: if compressing does not help, your original comes back and the row says so.
Screen (72 DPI) gives the smallest file for reading on a screen or sending by email. Ebook (150 DPI) stays sharp on tablets and laptops - the best all-round choice. Printer (300 DPI) keeps print quality.
Custom lets you set the picture resolution and JPEG quality yourself.
No. Text, fonts and vector drawings stay sharp at any setting - only the pictures inside the PDF are resized and recompressed. Unused font data is trimmed as well.
Scanned pages are pictures, though, so very low settings can soften them. Ebook is a safe choice for scans.
Not directly. Locked PDFs are refused so their protection is never removed by accident. Remove the password first with Unlock PDF (you need to know it), then compress the unlocked file.
Grayscale turns colour pages and pictures into shades of grey, which saves more space - handy for documents you print in black and white. PDF to Grayscale does only that.
Fast Web View reorders the file so the first page shows while the rest is still downloading.
PDFs are compressed on our server with Ghostscript. They get random names, are never shared or read by anyone, and are deleted automatically within 4 hours. There is no watermark and no sign-up.
