By law, once a conviction has been entered for a criminal offense, a Judge alone cannot simply reduce the charge without a supporting motion from the prosecutor to do so. Typically, if a felony conviction appears on your criminal record, even as a juvenile, then you will have to go through the process of having it expunged from your criminal record. Sometimes juvenile records are sealed from the public, but if your conviction is public record, then you will need to follow your State's expungement eligibility requirements to have your conviction set aside.