In the last article, we read about how the example application, js13kPWA, works offline thanks to its service worker, but we can go even further and allow users to install the web app on mobile and desktop browers that support doing so. The installed web app can then be launched by users just as if it were any native app. This article explains how to achieve this using the web app's manifest.
Progressive Web Apps ≠ native apps. Here’s a little bit of PWA history. After the original iPhone debuted in 2007, enthusiasts took to jailbreaking. The first App Store with native third-party apps wouldn’t arrive until the following year so Steve suggested developers embrace web apps because Safari on iPhone had required support. “ This app is the best thing in my life for organising the million and one things I need to do. I love having my to do lists in one place and syncing events with my alerts and calendar. I just wish the events came up on my to do list on that day too as sometimes I forget to look at my events tab. To share your Mac with someone else, download a remote Virtual Network Computing (VNC) app like Jump Desktop. With full remote access and Mac remote control, the other person — or yourself connecting to another Mac — can have the same level of control as the person using that device. Except for Admin level access, since it's password protected.
These technologies allow the app to be launched directly from the device's home screen, rather than the user having to open the browser and then navigate to the site by using a bookmark or typing the URL. Your web app can sit next to native applications as first class citizens. This makes the web app easier to access; additionally, you can specify that the app be launched in fullscreen or standalone mode, thus removing the default browser user interface that would otherwise be present, creating an even more seamless and native-like feel.
Requirements
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To make the web site installable, it needs the following things in place:
- A web manifest, with the correct fields filled in
- The web site to be served from a secure (HTTPS) domain
- An icon to represent the app on the device
- A service worker registered, to allow the app to work offline (this is required only by Chrome for Android currently)
Currently, only the Chromium-based browsers such as Chrome, Edge, and Samsung Internet require the service worker. If developing your app using Firefox, be aware that you will need a service worker to be compatible with Chromium-based browsers.
The manifest file
The key element is a web manifest file, which lists all the information about the website in a JSON format.
It usually resides in the root folder of a web app. It contains useful information, such as the app’s title, paths to different-sized icons that can be used to represent the app on an OS (such as an icon on the home screen, an entry in the Start menu, or an icon on the desktop), and a background color to use in loading or splash screens. This information is needed for the browser to present the web app properly during the installation process, as well as within the device's app-launching interface, such as the home screen of a mobile device.
The js13kpwa.webmanifest file of the js13kPWA web app is included in the <head> block of the index.html file using the following line of code:
There are a few common kinds of manifest file that have been used in the past: manifest.webapp was popular in Firefox OS app manifests, and many use manifest.json for web manifests as the contents are organized in a JSON structure. However, the .webmanifest file format is explicitly mentioned in the W3C manifest specification, so that's what we'll use here.
The content of the file looks like this:
Most of the fields are self-explanatory, but to be certain we're on the same page:
name: The full name of your web app.short_name: Short name to be shown on the home screen.description: A sentence or two explaining what your app does.icons: A bunch of icon information — source URLs, sizes, and types. Be sure to include at least a few, so that one that fits best will be chosen for the user's device.start_url: The index document to launch when starting the app.display: How the app is displayed; can befullscreen,standalone,minimal-ui, orbrowser.theme_color: A primary color for the UI, used by operating system.background_color: A color used as the app's default background, used during install and on the splash screen.
A minimal web manifest must have at least a name and an icons field with at least one icon defined; that icon must have at least the src, sizes, and type sub-fields as well. Beyond that, everything is optional, though the description, short_name, and start_url fields are recommended. There are even more fields you can use than listed above — be sure to check the Web App Manifest reference for details.
Add to home screen
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'Add to home screen' (or a2hs for short) is a feature implemented by mobile browsers that takes the information found in an app's web manifest and uses them to represent the app on the device's home screen with an icon and name. This only works if the app meets all the necessary requirements, as described above.
When the user visits the PWA with a supporting mobile browser, it should display a notification (such as a banner or dialog box) indicating that it's possible to install the app as a PWA.
After the user indicates they wish to proceed with installation, the install banner is shown. That banner is automatically created by the browser, based on the information from the manifest file. For instance, the prompt includes the app's name and icon.
If the user clicks the button, there is a final step showing what the app will look like, and letting the user choose if they definitely want to add the app.
When confirmed, the app will be installed on the home screen.
Now the user can launch and use the web app just like any other application on their device. Depending on the device and operating system, the web app's icon may be badged with a small icon that indicates that it's a web app. In the screen shot above, for example, the app has a tiny Firefox icon, indicating that it's a web app that uses the Firefox runtime.
Splash screen
In some browsers, a splash screen is also generated from the information in the manifest, which is shown when the PWA is launched and while it's being loaded started up.
The icon and the theme and background colors are used to create this screen.
Summary
In this article, we learned about how we can make PWAs installable with a properly-configured web manifest, and how the user can then install the PWA with the 'add to home screen' feature of their browser.
For more information on a2hs, be sure to read our Add to Home screen guide. Browser support is currently limited to Firefox for Android 58+, Mobile Chrome and Android Webview 31+, and Opera for Android 32+, but this should improve in the near future.
Now let's move to the last piece of the PWA puzzle: using push notifications to share announcements with the user, and to help the user re-engage with your app.
Installing a software or app is extremely easy and so does uninstalling the software when you don't need them anymore? Many times, for some unknown reason, a Mac system denies to remove some data. If this is happening with you then the first thing you could try is to restart the computer and then try to remove it again, but still failed! Then what should you do?
On the other hand, there are many stubborn software that won't get uninstalled whatsoever. You will continuously get errors, warning and unknown issues when uninstalling them. These are usually infected with viruses or the developers don't intend to let you uninstall them. This could be really very intimidating especially when they are slowing down your computer. In this article, we will show you few simple tricks to remove unwanted apps or softwares that won't delete on Mac.
Part 1. How to Delete Apps in the Finder on Mac Manually (the Hard Way)
Unlike Windows computers, Mac works a little distinctly. All the programs and apps are stored in the Application directory. The app and software configuration settings are saved in the Library/Preferences folder and any other additional supporting data are saved in the /Library/Application_Support folder. In order to remove the Apps in Mac, you only have to open the application folder and drag the app to the Bin or Trash Can. This is rather easy if the program is uninstalled simply.
However, if the application still denies to uninstall and stays on the Mac then we need to get another solution below.
Delete the Preferences
If you can't delete the app by using the above method then the reason could be that the preferences folder of that app still exists. Let's go and delete that first.
Step 1. Open Finder then click on the Go option from the dropdown menu.
The flaws could allow attackers to access data in parts of the system that were considered protected.Apple eventually patched macOS to guard against Spectre and Meltdown. Since Apple hadn’t patched the security flaw when it was first reported earlier in the year, OSX/Linker slipped past Gatekeeper.Hardware is another point of weakness in the chain. Antivirus app store mac. These flaws became known as —and yes, your Mac was likely affected. In early 2018, it was discovered that almost every CPU sold in the past two decades was affected by serious security flaws. The exploits require that you download and run malicious software for it to do any harm, and there’s no evidence that any Mac owners were directly affected.
Step 2. When the menu pops down, simple press the Option key and keep holding it.
Step 3. You will now see the Library option right between the Computer and Home options. Click on it and the folder should open.
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NOTE The final necessary thing to do after uninstalling a program is to empty the trash can or Bin. Dragging and dropping a software shortcut icon to the Bin will actually do nothing. It is only erasing the shortcut, this won't uninstall the program. It is still laying somewhere in your computer however, if you empty the trash then the application is truly removed.
However, there's also a chance that the software files must have stored in the computer somehow, which happens quite often. So, if you are not able to remove Apps by yourself then it's better to take help from an automatic Mac program remover like CleanGeeker in Part 2.
Part 2: Completely Remove Unwanted Apps that Won't Delete on Mac (Easy Way)
When any app is fishy enough not to get deleted from a Launchpad or Finder then you will have to use some sort of force to delete that. TunesBro CleanGeeker is one of the most powerful Mac app remover that helps to remove any app or software as well as the trace from the Mac without destroying your system. Unlike other App removers, CleanGeeker can deeply scan and remove multiple apps at once, including corresponding files and preferences. It also has other miscellaneous functions as well like cleaning junk files, clearing app caches and finding + deleting duplicate items from the computer like music, documents, pictures, videos, etc. To summarize, CleanGeeker is used to optimize and organize your Mac so that it remains clean and fast as a thunder.
CleanGeeker - Force to Delete Apps on Mac, Easy and Safe!
- Locate all the installed apps on your Mac and shows them in a list.
- Deeply scan and remove apps along with its remaining files like caches, or junk files.
- Force to remove unwanted app that won’t uninstalled, easy and safe! Never destroy your system.
- Optimize and improve your Mac’s space and performance.
Step 1Download and Install App Remover Tool on Your Mac
Download the App remover and install it normally on your Mac. Launch the program and enter the license code to activate the software. On the main user interface, you will be able to see multiple options on the screen. Just click on 'Uninstaller' from the mid left sidebar.
Step 2Scan All Apps that Installed On Your Mac
Let the program search all the apps installed in your computer. It may take few minutes.
Step 2 Found and Remove Unwanted Applications on Mac
Once the scanning is done, you should be able to look on all the apps that has been installed in the system. Choose the app that you want to remove and select the 'Delete' button once.
There's no software or apps that cannot be removed with CleanGeeker How manage app volume on macbook air. and that's why it's now a must have tool for everyone. Moreover, it helps to speed up your computer unbelievably fast and run it like it used to when you first bought it.
Delete app from mac book. How to Delete an App on Mac from Launchpad. The first way we want to recommend to you is using. Uninstall Mac apps using Trash. Whether you're running macOS Catalina or an earlier macOS, like. Uninstall apps on Mac with App Cleaner & Uninstaller. The first way of uninstalling apps is to use a. How to Delete Apps in the Finder on Mac Manually (the Hard Way) Unlike Windows computers, Mac.
Part 3: Delete Apps Downloaded from Mac App Store
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One of the best alternative to delete any app is by simply deleting it from the sales page from the App Store. Once you have done that, you will no longer be able to download it form there anymore. But, the app will remain active in the iTunes account which is associated with that. So, if you wish to download or update it later from the iTunes then you will be able to do that. But the important thing is: Once you delete any app which you have downloaded from Apple App Store, you won’t be able to recover that app or find the SKU to install it again.
So, if you want to delete any app from App Store without actually removing it then follow these steps –
Step 1. Open the Launchpad from the Dock section. At this point you should be familiar with it if not then just find the Rocket icon.
Step 2. After the Launchpad is opened, it will replace the existing Windows with the apps that are provided by default in alphabetic order. Printopia app for mac. You can obviously do many things using this tool but at this moment we are just erasing the unwanted apps.
Step 3. Just like any iPhone or Android phone, click and hold on the app that you want to delete until it starts dancing. Next, click on the 'X' mark with your mouse or touchscreen.
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Step 4. Now, confirm that you want to delete by clicking on the 'Delete' button once and the system will get rid of it instantly.
Done! Keep in mind, that you should not worry about accidentally delete the apps that you want to keep in Mac. You’re allowed to obviously re-install any app that you have deleted before without paying any extra. Simply go to the app store and it’s done.