The CrosManager App Editor can be used to change the features of a Progressive Web Application (PWA). 

After granting Context Menu permissions, you can right-click on any web page and select the "Edit App Manifest" option. (Please note, this will reload the page.)

Once the editing script is loaded in, a small window will popup with all the editable fields of a PWA manifest. Change the items to match your preferences, and then click save. 

Should you change your mind and wish to delete your changes, simply press close instead. 

CrosManager's App Editor can also be used to customize the icons of your favorite websites. 

Enter: 

1. The desired name for your shortcut

2. The URL of the webapp you wish to create a shortcut for

3. (Optional) The image you want as an icon. This image can be stored locally or linked from the internet. 

Click the "Save Shortcut" button, then utilize Chrome's "Create Shortcut" feature to store your personalized shortcut.