Hello, I have the need to change the margins and footer on the last page, just I don't know the total number of pages until the document is rendered.

Is there a selector ?

I managed to create the desired output with some JS, as it's the last page, I can append the footer and position it to the bottom with position:absolute; bottom:0; and then remove page.js's bottom margins but I'm not sure if it will create any side effects.

class RemoveBottomMarginLastPage extends Paged.Handler
{
    constructor( chunker, polisher, caller )
    {
        super( chunker, polisher, caller );
    }

    afterRendered( pages )
    {
        let lastPage = pages[pages.length - 1];
        let pageBox = lastPage.pagebox;

        pageBox.style.gridTemplateRows = "[header] var(--pagedjs-margin-top) [page] calc(var(--pagedjs-pagebox-height) - var(--pagedjs-margin-top)) [footer] 0";
    }

}

Paged.registerHandlers( RemoveBottomMarginLastPage );

Thanks, Antonio