How to modify a picture?

ZorinOS provides us a default, open-source photo editor named Gimp. Gimp is known around the internet for being "The linux's free Photoshop" even there are some differences.

One of them is the window interface. In gimp, there are several windows, and every window has it's own use.

1 -The main tool box : contains a set of tools to modify your image, and also two colour selectors (one for background, another for foreground). Those tools helps you to select (in many ways), cut, move, resize, paint, erase, blur, sharpen, smudge, make gradients, insert text, bucket fill (fill an area with the selected colour), clone, paintbrush (draw as if it were a paintbrush), transform... There are lots of tools, but that's not everything:

There is a tool options tab below, where each tool has its own options, such as size, opacity, shape... So every tool can adjust to fit perfectly in your task.



2 -Image windows : This window contains your image and commands to modify / edit. There are several automatic options depending of your needs such as filters. there are several options to adjust that workspace to the user. You can set the ruler to be visible on the edges, so you can do your task with accuracy of size. At the bottom left corner, there is a setting box to adjust the zoom.



3 -The layers tab  : Displays the layer structure of the active image, and allows to create, delete, modify layers, to improve the image.

4 -Brushes, Patterns and Gradients: This window is attached to the layers tab, it can be used to select the brushes in case you need manually modify the image, it has several shapes and the size can be set from here.

Starting-up
First of all we need to open our image, go to File-> open... to select your file. Once your image is in the image window, now you can start modifying:

-> Select filters to modify the image overall (add light, lower brightness, equal color, desaturate...)

-> Select brushes to make small changes, or free changes to your image. (you can see some example filters in the image)

-> Create or modify layers, to help you with your image.

->When all the changes you need are done, don't forget to save your file!! click File->Save (if you want to replace your original picture)

File->Save as... (if you want to save this picture as a new one, without affecting the original)

Remember that you can always modify an image (if your permissions allows you to) so don't hesitate to save every little change, so you can recover if you mess something.

That's everything you need to modify an image, there are further options for advanced or professional users.