PDF Compressor

Most advanced online PDF compressor to reduce PDF file size.

Drop your files here
Paste URL one at a time

How To Compress PDF?

  • Step 1 - Click “Choose PDF” button to select your PDF files (you can select up to 20 files)
  • Step 2 - Click on the “Compress Now!” button to start compressing
  • Step 3 - When the status change to “Done” click the “Download PDF” button

Advanced PDF Compressor

PDFs are usually created without any consideration for file size. This gives us a lot of room for improvement when compressing them.

We start off by compressing streams (objects inside the PDF), they can be compressed much like HTML or JavaScript. Then we identify any duplicate images (such as logos) and use virtual copies in their place. Finally, we compress large images (lossy) to reduce the overall file size further. This approach has made our PDF compressor better than any competitor's. Our size savings are better than any other while also preserving PDF quality.


We upload your PDF files over a secure connection. Your files are automatically deleted from our server within 6 hours. Making this service a secure way to compress sensitive PDF documents.

100% Free

Yes! You do not need to pay anything or install any software to use this service. It works on any browser and is mobile friendly. You can upload multiple PDF files, up to 1GB each. Unlike other services, we don't limit our service to a few free files and then ask you to pay! There are no wait times either.


Would my PDF quality suffer?

If compression is done without consideration for image and font resolution, your PDF quality will suffer. Fortunately, this tool can intelligently balance between compression and quality. For example, we are able to detect if an image is a grayscale or color, then apply different image compressions to yield the optimal quality.