How To Compress PDF Files In Size?

Put the back in Portable Document Format. Clean up scans and imports. Reduce filesize and go further with your PDFs.


More Short, More Sweet, More Portable

There's no reason to carry around big, bloated PDF files that are bigger than they should be. Reduce them in size to their optimum with PDF Reader's innovative file compression tools. Clean up imported files from other apps, scanned images and documents, and improve upload and download times with commonly used files. Your colleagues and clients will be impressed by your brisk file loading speeds.


How to Compress a PDF on Mac

PDF Reader Mac enables you to reduce file size while optimizing for maximal PDF quality.

  1. Download PDF Reader Mac version and launch the app
  2. Open the PDF you want to reduce the file size and click More from the top menu bar to reveal more tools.


  1. Click the Compress button on the top menu bar.


  1. In the dialog box, choose a compression method that works best for you. (The DPI means the quality of how the PDF documents can be printed and displayed. Setting a lower DPI for the compression will reduce the file size)


  1. Press Compress, and select an output folder to save the compressed file


Scan, Import, or Send. Better with PDF

PDF Documents are already some of the most useful filetypes available. PDF Reader goes a step further with compression.

Scanning, Meet Compression

Scanning documents is one of the most commonly used features of PDF Reader. Just use your phone to take pictures, and see your document come to life as a PDF. Even use your professional scanner to create PDFs, and open them in PDF Reader. But there's always a problem with scanning documents to PDF. They seem to be too large, as scanning systems often don't optimize the files to be as small as possible.

Some PDF scanning apps restrict the maximum number of pages, and often you can't make more than 10 pages in your PDF! We think there's a smarter way. Use PDF Reader's built-in compression option to optimize your scanned PDFs, and make them smaller. The resulting files won't lose any quality, but they will be much more portable, faster to open, and take up less disk space on your machine.Once scanned PDFs are compressed, you can add to them with annotations, highlights, and attachments, or even attach them to other PDFs. Because the filesize is smaller, they are easier to email, text, or even to open and present with your colleagues, clients, and peers. Use PDF compression next time you make a scanned PDF, and see how much time it saves you.

Squish Bulky Imported Files

Compression works by removing blank bits and bytes from your files, stored by other programs that have inefficient PDF conversion. PDF Printing programs can waste your precious time, mobile data, and disk space by wasting extra space with blank data. But how to get rid of this blank data? The answer is compression.

Compression effectively squishes the file data into a smaller format, getting rid of the repeating and extra blank spaces. It's all about making those files more efficient, and the result doesn't damage the original file. What if you need to download and preview presentations, word documents, or other file types quickly, without waiting for long loading times? Compression enables this for you. With PDF file compression built right-in, PDF Reader allows you to easily overcome the headaches that are presented by other inefficient programs.

You can easily import files from other software into PDF Reader, supporting a variety of file types. When you have edited the file to your liking, try compressing it, and freeing up extra space on your hard drive. Even the space on the cloud will be freed up, and you'll speed up download, upload, email, and editing times for yourself and your colleagues.

Opening PDFs Just Got Faster

Sending sales presentations and company documents by PDF isn't anything new. The PDF, or Portable Document Format file-type is one of the most versatile document types for work, precisely because of it's ability to come from a variety of other formats as a converted file. It's pretty common for companies to start with a PPTX or Microsoft Powerpoint presentation, and print-to-pdf using Microsoft's PDF Printer built into Windows. There's a similar process in MacOS, with Preview and its built-in Print-To-PDF functionality.

Using these tools, you can receive a number of different types of files, originally in another format, but now, PDF. You can add encryption, passwords, and lock the files for editing, making PDFs very popular for commercial documents. You can even add form filling to your PDFs, annotations, attachments, and many more features. But all of these features can easily add to the bulk of a PDF file, and increase its speed.

When your colleagues or clients go to open the file, they don't have a lot of patience. You don't want them to wait. So, use PDF Reader's built-in compression tools to shrink your PDF files down as small as possible. Once they're shrunken down, you won't believe how fast they send by email, upload to the cloud, and open on mobile devices; making PDF's truly portable.


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