How to use a pattern image as the page background?

[afiaith]

Here you go

#set page(
  background: {
    let pat = pattern(
      size: (30pt, 30pt),
      place(circle(radius: 15pt, fill: luma(240))) // replace the `#circle` command with your `#image`
    )
    rect(fill: pat, width: 100%, height: 100%)
  }
)

#lorem(300)

#lorem(100)

#lorem(200)