Compress a PDF
Reduce the size of a PDF so it is easier to email or upload. Choose how much quality to trade for size.
Processed on our server. Your file is uploaded over an encrypted connection, processed in an isolated temporary folder, and deleted after download or automatically within about 15 minutes.
or drop it hereSupported formats: PDF
This tool uploads your file to our server over HTTPS. It is processed in an isolated temporary folder and deleted after download or automatically within about 15 minutes.
How to use Compress PDF
- 1
Add the PDF you want to make smaller.
- 2
Pick a compression level: low, medium, or high.
- 3
Select Compress, review the size reduction, and download.
About Compress PDF
Compression needs our server, so your PDF is uploaded over HTTPS, processed in an isolated temporary folder, and deleted after you download the result, or automatically after about 15 minutes. Low compression only restructures the file without changing any content. Medium and high re-encode large images as JPEG and reduce their resolution, which shrinks scanned and photo-heavy documents the most. Text-only or already optimised PDFs often cannot get much smaller; in that case you get the original back with a clear message. Password-protected PDFs are not supported.
Frequently asked questions
Which level should I choose?
Start with medium. Use low if the document must stay visually identical, and high if size matters more than image sharpness.
Why did my file barely get smaller?
Files that are mostly text or were already optimised have little to remove. If no useful reduction is possible, we return the original and tell you.
What happens to my file on the server?
It is processed in a temporary job folder and deleted after download, or automatically after about 15 minutes if it is not downloaded.
Is there a file size limit?
Yes, a safety limit applies to uploads (200 MB per file by default) to keep the service available for everyone.