Is it possible to add the function of skipping free areas?

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• Etcher version:
• Operating system and architecture:
• Image flashed:
• What do you think should have happened:
• What happened:
• Do you see any meaningful error information in the DevTools?

For example, this disk has 100G but only 10G data. If I use DMG format, he only needs to restore 10G. However, when using DMG to package, this effect only occurs when the format is FAT32 NTFS HFS+ APFS. I have tried EXT and EXFAT doesn't work. What is restored is the size of the disk. Using other formats or disk-to-disk will not automatically skip the free area. What I want to know is whether it can support some sparse images. This way you only need to recover useful data.