Where can I create watermarks

Hello,
For testing of my app I need to create several watermarks with given size, text, text color.
I have gimp 2.8 under ubuntu 18 ( but I am not very good with gimp ).
Are there some tools in ubuntu 18 for this or maybe online?

Thanks!

Start learning Gimp.

This is what you need to know:

  • Learn layers. On a lower layer will be your image; on the upper layer will be your watermark.
  • Learn transparency. On the watermark layer make it transparent, perhaps to 10%.
  • Save as a template so you can insert different images in the bottom layer and retain the upper watermark, assuming you want the watermark to be the same each time.
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You probably could install Imagemagick and that is a command line program. You can draw text over the image in different positions and with different options.

magick base_image -fill rgba(255,20,100,0.1) -pointsize 40 -gravity center -annotate +0+0 "Annotate" output_image

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