I took a photo that I really like and would like to use for my CV (my current avatar). Unfortunately, it has a green nature background that could be perceived as unprofessional. Which free tool that either runs online or on Windows 10 does the best job at removing the background? It's okay if I need to spent five minutes for it.
Whether you are a graphic designer, photographer, illustrator, or scientist, GIMP provides you with sophisticated tools to get your job done. You can further enhance your productivity with GIMP thanks to many customization options and 3rd party plugins.
In your case here are some example pages: