Suggestion about the tool to generate mask image?

[animebing]

Thanks for your great work. I am trying to try "paint with words" using your code, but I can not find an easy way to get the mask image. I have tried "Microsoft Paint", but there are many small holes around the edge. Can you share the tool you use to generate the mask image?

[mittski]

Try using free software GIMP, Photoshop if available, or changing your brush settings within MS paint - all of these can create the mask images used in the examples depending on brush settings

[animebing]

@mittski Thanks for yours help, I find an online paint tool named jspaint which has the same function. And I also try MS paint again based on your suggestion, I find that if I use pencil instead of other brushes, the hole will be disappeared.