The Activity Monitor will let you see the applications that drain your computer’s energy and battery life. In the Finder menu, click Go and select Utilities.

To find out what is using all the bandwidth and system resources on your Mac, check the Activity Monitor and manually micromanage any application that is too hungry for bandwidth while running in the background: You may not even know that these applications are taking up precious resources. Click Update Now to download and install current updates.Īpplications that run in the background may be making Mac Preview slow, as they consume lots of RAM.Click Software Update to see if there are any new versions available.Select System Preferences from the Apple menu.Running the most recent version of this native application is the most effective way to eliminate issues that cause slow Preview performance.Īs Preview and macOS updates are bundled together, you need to check for the general macOS updates to improve the speed of Preview: Luckily, there are a few things you can do to combat slow Preview performance: you can update to a current version, close resource-heavy applications, delete cache files, or re-save your PDF file. You may have noticed that simple tasks such as zooming in and out within a file or opening multiple photos at once may be painfully slow when using the Preview app. As the go-to utility for viewing PDF and image files, it can be frustrating when you have to deal with slow Preview response times that make it difficult to load or read your files.īut fear not, you can speed up Preview with a few tricks and start viewing images and PDF files without the hassles of sluggish performance. Surprisingly, for a small image-viewing app, Preview has a stunningly poor performance record. It’s a great simple application that packs a robust set of features like markups, virtual signatures, and photo editing. Whenever you view an image or a PDF on your Mac, Preview is the default app to open. But to help you do it all by yourself, we’ve gathered our best ideas and solutions below.įeatures described in this article refer to the MacPaw site version of CleanMyMac X. So here’s a tip for you: Download CleanMyMac to quickly solve some of the issues mentioned in this article.

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