Compress PDF

Make a PDF smaller, or get it under a size limit. Works best on PDFs with photos or scans.

How this was calculated
Your files never leave your device. They are compressed in your browser.
About the Compress PDF
Most large PDFs are large because of the photos and scans inside them, not the text. Compress PDF finds every image, scales oversized ones down to a sensible size and saves them as efficient JPEGs. Then it packs the rest of the file tighter. Text, vector graphics and links are left exactly as they were.
If you need to get under an upload limit, enter it in "Aim for under". The tool tries stronger settings until the file fits, and tells you plainly if it can't.
How to use it
  1. Choose one or more PDFs.
  2. Pick a strength: Light keeps the most detail, Strong makes the smallest file.
  3. Optionally enter a size to aim for, such as 5 MB.
  4. Download the compressed files, or all of them as a zip.
Example
A 5.8 MB two-page report with a full-resolution phone photo came out at 1.4 MB on Light, 278 KB on Balanced and 53 KB on Strong. The text stayed sharp at every setting.
Questions
Will the text get blurry?
No. Only images are re-encoded. Text and vector shapes are untouched, so they stay perfectly sharp.
Why did my PDF barely shrink?
A PDF that is mostly text has little to remove. Some images are also left as they are on purpose, such as print-ready CMYK images, which could shift colour. The result shows what was left alone and why.
Are my files uploaded?
No. Compression runs in your browser, so the file never leaves your device.
Can it make a file bigger?
No. If re-saving would not make the file smaller, you get the original back unchanged.