Go to any tab and drop a line into the chat box.They can help you deal with any customization tasks and almost any other tech issues you may encounter. If you often feel like getting help with your Mac-related questions, MacKeeper support team are available 24/7. Personalizing your Mac can make it much more enjoyable to use. The photo should fit the resolution of your screen.heic file format, depending on your macOS version Luckily, there is an easy solution to unblur or change it, and that’s what we will go through in this article.īut first, there are a couple of things you need to consider before attempting to change your login background on Mac: By default, it's a blurry version of your wallpaper.