Compress a PDF and reduce its size
PDF too large to attach to an email or upload to a website? PDFmoji shrinks it right on your device and keeps the text readable.
or drop your file here · free, no sign-up
- Free and ad-free
- Your files stay on your device
- Works on phone and computer
Compress PDF in 3 steps
Open the PDF
PDFmoji shows its current size.
Pick a level
“Optimize” keeps the text editable. “Strong compression” turns pages into very light images.
Download the smaller file
Compare the new size and download the compressed file.
Why PDFmoji
Actually free
3 documents a month without paying or giving a credit card, and no ads at all.
Your files never leave
Everything runs in your browser: your PDF is not uploaded to any server.
Built for phones
Open the PDF you got by email, make the change, download. It works on computers too.
One tool for everything
Edit text, sign, fill in, merge, compress: no need to go through five websites.
Frequently asked questions
Which compression should I choose?
Start with “Optimize”. If the file is still too big, strong compression shrinks it much more, but the text is no longer editable.
My scanned PDF is huge, what can I do?
Strong compression is made for scans and photos: it greatly reduces image weight.
Is the file sent over the internet?
No. Compression happens in your browser and your document stays on your device.
Is it really free?
Yes. With a free account you download 3 documents a month and make 10 Assistant requests, with no credit card and no ads. PDFmoji Pro (€5.99 a month, cancel anytime) removes these limits.