const url = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII="
const f = new File(
  [
    Uint8Array.from(
      atob(url.split(",")[1]!),
      (m) => m.codePointAt(0),
    ),
  ],
  "myfilename.png",
  { type: "image/png" },
)

const url = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVQYV2NgYAAAAAMAAWgmWQ0AAAAASUVORK5CYII="
const f = new File(
  [
    Uint8Array.from(
      atob(url.split(",")[1]!),
      (m) => m.codePointAt(0),
    ),
  ],
  "myfilename.png",
  { type: "image/png" },
)