A wall application, also known as a wall sticker, wall tattoo, or wall vinyl, is a vinyl sticker that is affixed to a wall or other smooth surface for decoration and informational purposes. Wall decals are cut with vinyl cutting machines. Most decals use only one color, but some may have various images printed upon them.

Vinyl applications were originally only used for sign making, but they have recently been added to interior decorators portfolios and have also become well known as home or office decorating option.

Vinyl Sticker can be used on windows, walls or tiles as branding, advertising, or decoration. They may also serve as a tool to inform people that there is a glass door or window.