BannerSplitter

Pick a wide image, choose three, six or nine tiles, and BannerSplitter cuts it into TikTok-sized pieces right in the browser. A 1 · 2 · 3 strip shows which tile to post first so the banner reads left to right, and a safe-zone check warns about TikTok labels. Free without an account; one-time $9.90 Pro adds batches and custom grids.