Facebook photo albums have a design limitation that undermines their purpose: the album cover image displays only one photo, giving viewers zero context about what's inside. A vacation album with a single beach photo as its cover could contain anything from two photos to two hundred — but viewers won't know until they click through. A merged grid cover solves this by showing 4–6 representative images from the album in a single cover frame, functioning as a preview that communicates the album's scope, quality, and highlights before a single click. The most effective Facebook album cover grids follow a narrative logic: for a vacation album, a 2×2 grid showing the destination landmark, a group shot, a food photo, and a sunset shot communicates the full vacation experience. For a wedding album, a 2×2 grid of the ceremony, first dance, cake cutting, and family portrait tells the wedding story in miniature. For a baby's first year album, a 1×3 strip of newborn, six-month, and one-year photos documents growth at a glance. For an event album, a 2×3 grid of setup, crowd, performances, speakers, food, and closing ceremony creates a complete event narrative. The technical execution for Facebook album covers is straightforward: Facebook displays album covers at approximately 200×200px in the album list view, but exports at 1200×1200px for sharp Retina/HiDPI display. This means your grid cover must be clear and readable at thumbnail size. Use bold, high-contrast images with the subject filling each cell. Avoid text overlays — they become illegible at album thumbnail size. Use 0–2px cell spacing for maximum image utilization in the small display area. For albums with more than six photos, create a 3×3 grid that samples across the full album. MergeFrame's local processing keeps your personal photos private — album covers are created on your device before you upload them to Facebook, meaning your complete photo library never passes through a third-party image processing server.