Capture by Techulus - The ultimate toolkit for converting HTML to image & PDF. Pay only for what you need.No Subscription.
iOS Jetpack - Beautiful easy-to-use screenshot templates for App Store
Screenshot Machine - Screenshot machine is an online website capturing service. Creates a screenshot or thumbnail of any online web page in couple of seconds for free.
App Screenshot Maker - Design marketing screenshots for your app in minutes
HTMLCSS to Image API - Convert HTML to an image (jpg, png, webp). Renders images exactly like Google Chrome. Works with PHP, JavaScript, Ruby, .NET and more.
Promomatic - Easily create beautiful app store assets