Compress Images for eBook — Free & Instant
eBook covers are the primary marketing asset for digital books on Amazon Kindle, Apple Books, and other platforms. A high-quality optimized cover stands out in store search results. Use ImageSmith's free image optimizer to compress your eBook images directly in your browser — no account needed, no watermarks, and no ads. Target under 2,048KB per image for best results on eBook.
Max File Size
2,048 KB
Recommended Format
JPEG
Dimensions
1600×2560 (Amazon Kindle ideal ratio)
eBook Compression Tips
- 1.Amazon Kindle recommends 1600×2560 pixels (2:3 portrait ratio)
- 2.Minimum height 1000px, ideal height 2500px for best store display
- 3.Keep cover JPEG files under 2MB
- 4.Text must be readable at thumbnail size (around 100px tall)