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macOS Catalina: 5 Things Web Developers & Designers Should Know

William Shakespeare

Feb 15, 2025 am 08:48 AM

macOS Catalina: Web developers and designers' focus

macOS Catalina has been released, and you may have heard of the split of iTunes and the new consumer-facing entertainment app that comes with the system. But for developers, designers and other technical professionals, what key points do they need to know? Let's analyze it one by one.

macOS Catalina: 5 Things Web Developers & Designers Should Know

Catalina terminates support for 32-bit applications

Many developers and designers rely on some older, unknown native applications to perform specific functions. Your Catalina update might bring you an accident: This is the first version of macOS to abandon support for 32-bit applications.

During the installation process, the system will list installed applications that will not be opened after updates. If you want to continue using the tool, you need to contact the developer for a long-term update…or continue to use Mojave for a while.

Catalyst (Catalyst)

Mojave ports iOS ports for news, stocks, voice memos and home apps to macOS. In Catalina, Apple is exposing tools that support these ports and name them Catalyst.

While this won't directly affect web development efforts, it does make iOS a more attractive native development platform, which may affect your future platform choices. If Apple's plan to revive stagnant macOS third-party app development with some of the features of iOS works, you may be able to integrate better productivity and development apps into your workflow in the future.

Catalyst is currently available to iPad app developers – we expect to expand the scope in the future.

Voice Control

Catalina provides accessibility improvements for users who are difficult to see clearly or use keyboard and mouse through improved voice control.

Of course, developers should make sure their applications work with the tool as well as possible, as this is the right thing to do.

Developers are known for their love for keyboard shortcuts, but there is no doubt that the ability to create custom commands inspired those who are determined to find skills in their lives. What if you don't have to move your cursor or sight away from VS Code to run other frequent workflows?

We look forward to seeing what solutions the community will come up with.

Screen usage time

Did you waste too much time on your computer for meaningless entertainment, forcing you to stay up late to effectively make up for your time?

Or are you a workaholic who can't find the willingness to close and disconnect?

If you are like most people in our industry, you are a mixture of the two. Catalina introduces a variant of the Screen Use Time app that has been around for several years on iOS.

MacOS's screen usage time provides you with visual analysis to help you understand the way you spend your time on your device, which often leads to some unexpected epiphany. It also allows you to schedule downtime, forcing you to leave your computer and enter the real world at the right time.

As with iOS, you can also set time limits for specific applications, and there are ways to moderately control your web content usage without completely blocking your web browser from opening.

Sidecar: The most expensive auxiliary monitor you will have

For developers, designers, and all other web professionals, the real main feature of Catalina is Sidecar. Sidecar turns your iPad into a secondary monitor for your Mac and it's very easy to enable (provided that you have the necessary tablet, which is not included in the OS update).

The best reason to use Sidecar compared to standard monitors is Apple Pencil integration. Designers will love the ability to draw directly on the screen when using Sketch and Illustrator without having to switch devices all the time. If you want to see what you draw on one side without barriers, you can even mirror your Mac's screen.

Most of us will use Sidecar as a place to place Slack or terminal windows, but in any case it is obvious that it will be the most rewarding update for many of us.

How are you doing?

Let us know what you've upgraded and what you like best so far. We always recommend waiting a few days to let the error go away — especially after Apple’s recent records — but preliminary reports show that the final version is very stable.

MacOS Catalina FAQ for Web Developers and Designers

What are the new features in MacOS Catalina that are beneficial to web developers and designers?

MacOS Catalina brings a range of new features that can significantly enhance the workflow of web developers and designers. One of the most notable features is the introduction of Sidecar, which allows you to use your iPad as a secondary display. This is especially useful for designers who can now use the Apple Pencil to do precise operations directly on your Mac. Additionally, new voice control features can change how developers work, allowing them to control their Mac entirely through voice, which can greatly increase productivity.

How does removing iTunes in MacOS Catalina affect web developers and designers?

In MacOS Catalina, Apple decided to disable iTunes and replace it with three separate apps: Music, Podcasts, and TV. For web developers and designers, this change should not have a significant impact on their workflow. However, it is worth noting that device synchronization is now handled by the Finder application. This may affect developers who are working on projects related to iTunes or its features.

How does MacOS Catalina enhancement security features affect web development?

MacOS Catalina introduces some new security features, including enhanced Gatekeeper, data protection and support for activation locks. While these features provide better security for users, they can pose challenges to web developers. For example, enhanced Gatekeeper may interfere with the installation of certain development tools. Developers need to make sure their tools and apps are notarized by Apple to avoid any problems.

What impact does the new SwiftUI have on web development and design?

SwiftUI is a new framework introduced in MacOS Catalina that allows developers to design applications in a declarative manner. This can significantly simplify the application development and design process, allowing developers to create more efficient and visually engaging applications. However, it is worth noting that SwiftUI is only compatible with MacOS Catalina and later, so developers need to consider this when developing applications for older MacOS.

How does Catalyst introduced in MacOS Catalina affect web developers?

Catalyst is a new technology in MacOS Catalina that allows developers to port iPad applications to their Macs. This may open new opportunities for web developers to reach a wider audience. However, developers need to make sure their iPad apps are optimized for Mac to provide a seamless user experience.

What potential challenges may web developers and designers face when upgrading to MacOS Catalina?

While MacOS Catalina brings many new features and enhancements, it also presents some potential challenges. For example, Catalina only supports 64-bit applications, so any 32-bit application will not work. This may affect developers who are still using 32-bit development tools or libraries. Additionally, enhanced security features may interfere with certain development workflows.

How does the new Zsh shell in MacOS Catalina affect web developers?

MacOS Catalina has replaced the default Bash shell with Zsh. For most developers, this change should not have a significant impact, as Zsh is largely compatible with Bash. However, developers writing scripts for Bash may need to modify their scripts to work with Zsh.

How do web developers and designers prepare for migration to MacOS Catalina?

Developers and designers should make sure all their tools and applications are compatible with the new operating system before upgrading to MacOS Catalina. This includes checking whether their apps are 64-bit and whether they have been notarized by Apple. In addition, they should be familiar with new features and changes in Catalina to make the most of the new operating system.

What are the benefits of using MacOS Catalina for web development and design?

MacOS Catalina brings some new features and enhancements that can significantly improve the workflow for web developers and designers. These include new Sidecar features, enhanced security features, and the introduction of SwiftUI and Catalyst. In addition, the new Zsh shell can also provide developers with a better command line experience.

Does web developers and designers have resources available to learn more about MacOS Catalina?

Yes, developers and designers have several resources to learn more about MacOS Catalina. These include the official Apple developer website, which provides detailed documentation on new features and changes in Catalina. In addition, there are some online tutorials and courses that can help developers and designers quickly understand the new operating system.

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