HugeHard Studio makes This Pic Can Change (这图能改), an on-device iOS photo & video toolkit (iOS 17+). Compress images to a target file size, resize, and turn short video clips into Live Photos or GIFs — standard media is processed locally on the iPhone. The site also hosts free practical guides, such as how to turn an iPhone video into a Live Photo and a screenshot-stitching guide. The app is currently in public TestFlight beta: https://testflight.apple.com/join/GK8ht2vv