Legacy ImageMagick Discussions Archive

Hello,
I've an high resolution pdf file containing a raster image, I need to add two lines on it. I'm using this command:
My issue is out.pdf comes out in super shitty quality, the image is all blurry and the file size is an half of the original (6MiB instead of 11.7MiB). I tried using -quality or -density but it seems they are ignored, for example using -quality 100 or -quality 1 doesn't change the output.

Is it possible to keep the original image exactly the same without converting it in any way?

If in.pdf contains a single raster image, the best extraction tool I know of is pdfimages, not ImageMagick. When it is extracted, use IM to draw lines and put it in a pdf.

If you really want to use IM to extract the image, use "-density X" before "in.pdf", where X is a suitable number for dpi, maybe 300.

Thanks, with -density before in.pdf it works perfectly!