When the status change to “Done” click the “Download PDF” How to compress a PDF. Follow these easy steps to compress a large PDF file online: Click the Select a file button above, or drag and drop files into the drop zone. Quick, easy to use, and doesn’t compromise the quality of your PDF file Home. or drop files here. Choose Files. You don't need to install any software, you only have to select your files and start the compression. or drop files here. Get your files email-size ready in seconds