Images with marks

[VictorFRamos]

Hi,

I made the conversion of a pdf and it presented marks on the edges of the generated images,
look:

in other pdfs these marks did not appear, why? Is it possible to remove?

I used these options:

let opts = {
                format: 'jpeg',
                out_dir: dir,
                out_prefix: 'page',
                page: null,
                scale:2048
            };