Does this inspect the real drive format?

No. It checks selected file sizes and names only, so treat the result as a transfer compatibility screen.

Why does FAT32 matter?

FAT32 cannot store a single file larger than 4 GB, which is a common USB-drive transfer problem.

Private file utility

Check selected file sizes and names for common FAT32/exFAT transfer issues locally.

Files are processed in your browser. They are not uploaded to this site.

Choose files

files or drag and drop them here

Local limits: Max files: 1000