Compress JPEG Images for App Store
App Store screenshots and icons are the primary conversion drivers for app downloads. Properly optimized at exact dimensions, they display crisply on all device screen sizes. The most widely used lossy image format, ideal for photographs and complex images with millions of colors. Use ImageSmith to compress your JPEG images to the ideal file size for App Store — target under 500KB for optimal performance. Processing is fully browser-based — no server uploads.
Recommended format
PNG
Max file size
500KB
Dimensions
1290×2796 (iPhone 15 Pro Max screenshots), 1024×1024 (app icon)
✓App icons must be exactly 1024×1024 PNG without transparency
✓Screenshot sizes vary by device — submit for each device category
✓Use PNG for screenshots with UI elements and sharp text
✓App Preview videos display before screenshots in the gallery
Compress JPEG for Other Platforms
Compress JPEG for App Store — FAQ
App Store works best with images under 500KB. Recommended dimensions: 1290×2796 (iPhone 15 Pro Max screenshots), 1024×1024 (app icon). ImageSmith can compress JPEG images to any target size in seconds.
Yes — App Store supports JPEG. Recommended format: PNG.
Upload your JPEG image to ImageSmith, set a target size under 500KB, and compress. App icons must be exactly 1024×1024 PNG without transparency
App Store requires screenshots at specific sizes: iPhone 15 Pro Max (1290×2796), iPhone 14 (1284×2778), iPad Pro (2048×2732). App icons must be 1024×1024 PNG without transparency.