Trim or pad a .3ds or .cci - ihaveamac/3DS-rom-tools GitHub Wiki

This will tell you how you can trim a CTR Cart Image (.3ds/.cci) to remove or add padding.

• 3dstool
  If you are not using Windows, you must build the source yourself for now.

Use this command on a padded CCI:

3dstool -rf game.3ds

Explanation of possible arguments for this situation:

• -r or --trim - Trim the CCI
• -f or --file - required, Target file

Use this command on a trimmed CCI:

3dstool -pf game.3ds

Explanation of possible arguments for this situation:

• -p or --pad - Pad the CCI
• -f or --file - required, Target file