2) A dialog box pops up, asking for the page number that does not need to be cut. If you are not sure, click Cancel to enter the next step, and then wait for the document to load.
3) After the document is loaded, you will see that the document is divided into two pages, namely the base page and the even page (sometimes the cover page and the special typesetting page are listed separately).
4) Drag the small boxes in the upper right corner and the lower left corner of the blue selection, remove the white edge, header and footer by yourself, and adjust to the appropriate size to determine the size of the selection. If you are not satisfied, you can right-click the mouse to re-select the area.
5) After selecting odd pages, the area with odd page size will be automatically displayed on even pages, and it will be completed after moving to the appropriate position.
6) finally, operate > cut PDF, and export the cut PDF, and you're done!
PS: Some protected PDFs may need passwords when exporting, which can be solved by using PDF password removal software. See my other article.