App extensions enable users to expand the Share menu of iOS gadgets with the desired service. It allows them to access multiple customization features and contents beyond the limits of the app and use them for the integration and collaboration with various other apps and features of the device.

Using the Photos app extension is very easy. In case you are a photographer and have an iPhone, then it’s like a boon for you. With extensions, the Photos app acts as a primary hub for various features such as Effects and filters from other supportive editing programs and apps you have on your device.
Enabling Photo and Video Extensions in the Photos app
To get the extension features, just install the compatible application with extension. You can have several apps with extensions. Sometimes you need to enable those extensions if they are turned off by default. Users need to download and install the apps that use extensions feature. Some of the prominent extension supportive apps are Camera +2, Pixelmator, Darkroom, and more.
In case you are using iOS 13 or above, then extension features are automatically turned on with Photos app. In case you wish to turn on the Photos app extension via Favorites, then follow these straightforward instructions:
Accessing and Using Photo and Video Extensions in the Photos app
Note: Users can anytime disable and re-activate the extension on their respective device
Using Share Extensions
In order to access Share extensions, follow these straightforward guidelines:
Note: You may share the content through the current app by tapping on the desired extension.
By following the procedures mentioned above you can find and use third-party extensions on your iPhone, iPad, or iPod touch devices.
JEANNE E. WINFIELD arrived on the cyber security scene in the early 2000s when virus and malware were still new and slowly evolving. Her longtime affair with writing with an interest in the cybersecurity industry, combined with her IT degree, has contributed to experience several aspects of security suite industry such as blogging at mcafee.com/activate.
Source : Photos App