how to adjust the PDF line weight
1. Download and install a PDF editor (Quick PDF Editor) on your computer, and then double-click to run the program and open the PDF file you want to adjust.
2, in the top of the tool column, "Annotation and mark" function can adjust line weight, through the screenshot can also see the "line tool" here
3, through the interface can be seen, I opened a PDF file has a line mark, below, we have the line to adjust the demonstration operation. After clicking on the line in the text, the line property appears on the right, and we can adjust the PDF line weight by setting the line property.
4, the "Border width" setting, line thickness can be adjusted at will, through the interface can be seen, the line here has changed, has been adjusted.
5, by adjusting the PDF line thickness to be satisfied, we can click on the "file" and then adjust the line after the PDF file to save.