Why would you need to compress PDFs? Since PDFs can get pretty heavy in size, you might face limitations with sharing them. For example, if you have a PDF that’s larger than 50MB, you might not be able to upload it to certain websites. You might even have trouble emailing it, depending on which email service you use. Compression is a way to make an existing PDF smaller. With PDF compression, you can optimize your document(s) so they are easier to share and take up less space on your hard drive. In some cases, this can literally halve the size of a PDF! How can you compress a PDF for free? Using our this PDF Compressor app , you can quickly and easily compress any number of PDF files for free. Once select PDF file to compress, your PDFs will automatically start compressing. Larger files will take longer than smaller ones, but it should only be a moment before all of them are compressed. Is this PDF compressor tool safe? If you are nervous about uploading your sensitive information, you don’t need to worry. Our server will automatically purge all uploads and conversions after one hour. That means 60 minutes after you upload a PDF, we erase all data related to it. Your information is safe with us! Also, you do not need to be concerned about losing your original PDFs. When you upload a file to our server, it makes a copy of that file and then compresses that copy. Your original PDF is always safe on your computer or mobile device.