Ladder safety devices including a gutter guard, a ladder extender, a ground spike and a ladder shoe, are described that improve the stability of a ladder placed against a structure with or without guttering. Embodiments of the gutter guard prevent the ladder from contacting the gutter, distribute the ladder's weight to minimize structural damage, avoid ladder-gutter contact resulting in and help to hold the ladder in place. The ladder extender offsets the ladder from the shingles of a roof when gutters are not present. The ground spike and ladder shoe stabilize a ladder placed on a soft or hard surfaces, respectfully.