pdf compressor

pdf compressor

PDF files are great for saving documents, but they can take up a lot of space on your computer. There are several ways to compress PDFs so that they take up less room. Here’s how:

You can shrink the size of a PDF file by compressing it online, with Adobe Acrobat for Mac or for Windows, or by using Preview in MacOS.

If you want to shrink the size of a PDF file that’s too big for your needs, there are several ways you can do it. This article will give you step-by-step instructions on how to compress a PDF file online—with Adobe Acrobat for Mac or for Windows—and also how to shrink the size of image files in Apple’s Preview app.

How To Reduce PDF File Size On Mac

  • Download and install pdf converter (online PDF editor).
  • Open the PDF you want to shrink by clicking on File > Open in the menu bar at the top of your screen, then choose where you have saved your file on your computer. Click File > Save As… when you are looking at the document after opening it up in Acrobat Reader or Adobe Reader X, which can be found as an app on your computer’s desktop or in its program menu when clicked with a right-click of a mouse button while hovering over its icon until an options menu comes up with “Open” and “Save As…” options showing up first before any others, then click Save As… followed by OK once prompted for confirmation of what will happen next.

How to reduce the size of a PDF online

There are a number of online services that will compress your PDF file for you, and they’re all free. One of the most popular is theonlineconverter.com Here, you can upload your PDF and then save it as either a ZIP file or a compressed JPG image file with a resolution of 300 dpi.

While both methods may seem straightforward, it’s important to note that neither is ideal for every situation. If speed is your main concern—and you don’t need high-quality images—you could try converting directly from one type of file into another using Adobe Acrobat DC or Reader DC (the latest edition) or Preview in macOS. These programs will allow you to convert an entire document at once. Still, they won’t reduce its size beyond what they originally were when they were sent over email or uploaded online (i.e., their original size).

Windows users

To compress your PDF file, you’ll need to download and install the free SmallPDF application.

Once you’ve installed SmallPDF, open up your PDF file. You should see a save button on top of the screen with an option that says “Save”. Click on it!

From here, choose “Small PDF” from the dropdown menu. This will automatically save your document in a compressed format that is easier for users without Adobe Acrobat software to view and download.

Use Acrobat Pro to shrink files on macOS

If you don’t already have it, download and install Adobe Acrobat Pro.

Open the PDF file that you want to compress in Acrobat Pro by double-clicking on it in Finder or clicking on Open with > Adobe Acrobat Reader in your Applications folder.

Go to File > Export and select a destination folder for the compressed PDF file that you’ll be saving later — this could be another folder on your computer or an external drive attached via USB cable (if available). This can also be done from within the Save As dialog box if desired; just remember where you saved it so that when we get back here later, we can retrieve our compressed file again! If using this method rather than selecting “Save,” then click OK once done without making any other changes before proceeding onto Step 4 below where we will adjust compression settings before hitting “Save.”

In this same window where we were able to choose our export location earlier called Save As… there are now options available such as “Format” (which allows users finer control over how much data gets shrunk versus how many image quality details are lost), but also under Advanced Options there’s an option called Compression Settings which let’s us set how much compression should occur per page.

Use Adobe Acrobat Reader DC to shrink files on Windows 10

Adobe Acrobat Reader DC is a free app that’s available for both Windows and Mac. If you’re using Windows, just download it from the Adobe website and install it on your computer. When you open Adobe Acrobat Reader DC, there will be an option to “Open Recent” in the File menu at the top left of your screen. Clicking this should bring up all of your recent PDFs that were opened in this program.

Once you’ve found the PDF file you want to shrink, click File > Reduce File Size. In this window, choose what quality level (or amount of compression) would work best for you here: Low (smallest file size but not much lossy), Medium-Low (moderate lossy), Medium (little lossy), Medium-High (more lossy) or High Quality Mode(s). Then select OK!

Use Adobe Acrobat Pro to shrink files on Windows 10

Open the PDF in Adobe Acrobat Pro.

Select File then, Export.

In the Export dialog box that appears, choose Compressed from the Save As Type drop-down menu at the bottom of the window.

Click Use Default Settings or click Custom Settings to set further compression parameters (you can also save these settings as a preset).

In this example, we chose High quality (ZIP format) because we want a smaller file size with no loss of image quality—but you can experiment with other settings if you want to see how they affect your files’ sizes and appearance.


We hope this article helped you learn how to compress PDF files. It can be tricky, but it’s worth the effort!

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