Compress HEIC Images for Desktop
Desktop wallpapers display across the full screen of monitors. A properly optimized wallpaper looks stunning on modern 4K monitors while keeping the file size reasonable. High Efficiency Image Format — the default photo format on iPhones and modern Apple devices. Excellent compression. Use ImageSmith to compress your HEIC images to the ideal file size for Desktop — target under 20,000KB for optimal performance. Processing is fully browser-based — no server uploads, no privacy risk.
Recommended format
JPEG
Max file size
20,000KB
Dimensions
3840×2160 (4K), 2560×1440 (1440p), 1920×1080 (1080p)
✓For 4K monitors, use 3840×2160 pixels for full-resolution display
✓JPEG at quality 90 is a good balance for large wallpaper files
✓PNG produces larger files but perfect quality for graphic wallpapers
✓Consider creating multiple resolutions for different screen sizes