Creating and uploading app screenshots to Apple and Google Play is a time-waster. Just do it with App Store Manager: https://appstoremanager.net
App Store Manager processes your app screenshots and uploads them as a package to App Store Connect and Play Store Console.
For the creation, you can use any graphics program or an online tool such as Launchmatic. Export everything to a ZIP file and upload it quickly, easily, reliably, and with a few clicks.
Update your images easily and quickly with the App Store Manager.
More information here: https://www.iwantanelephant.com
Or here: https://appstoremanager.net
Try LaunchMatic here: https://launchmatic.app