How to ignore Specifying area and page in imagemagick?

[PhillpZeng]

I am a newer for imagemagick, now, I want to find the difference in PDF files, PDF files have many pages and information, Howerver, the footer&header and specifying pages(e.g.The first page) no need do any comparision, how can I ignore Specifying area (e.g. Timestamp) in ImageMagick when I compare them?
thank you.

[snibgo]

You can rasterize just a certain page (or range of pages) with [N] where N is a page number from 0.

If you have two pages that you want to compare, but they both have dates in the same location that you want to ignore, you can paint over the dates by drawing rectangles.

[PhillpZeng]

draw is working,but could you give an example how to use rasterize to ignore specify pages?
Thank you very much.

[fmw42]

Code: Select all

convert image.pdf[0] result.png

renders just the first page. Numbering in imagemagick starts with 0.