To reduce file size, you can do a couple of things.
SSchmidt wrote:I know this is an older thread, but I just started into GIMP today.
I do have other questions though? How does one add text? Is there a way to save the photograph to make it smaller (in byte size)? The original photo was about 3 mb. After editing it came to 15mb.
Finally, is there a tutorial somewhere (in English, Turkish or German) that anyone knows about?
1 - Reduce the actual image dimensions. Use "Image > Scale Image" and then reduce to an appropriate size. I'd suggest the smallest you want to go is 800x600 or so. Probably 1200x800 is a little better if people are going to want to zoom in for a better look at details (particularly applicable to large MOCs)
2 - Reduce the quality of the image. Use "File > Export" and save your file in the desired format. A box then pops up that has a "Quality" slider that defaults at 95%, I think. You can drop this down to as low as 50% in some cases, which will reduce the file size dramatically.Adding text:
Use "Tools > Text" and drag a box for your text to go into. Click inside the box and start typing. You can edit font style, color, and size easily using the text tool options. This creates a body of text in a new layer, so after deselecting it, you can drag it around and reposition, resize, etc using the various tools available in GIMPTutorials:
There was a pictorial walk through offered by Hrvoje back in 2011 that can get you started on doing white backgrounds: http://www.brickshelf.com/cgi-bin/gallery.cgi?f=477895
Otherwise, try searching for "GIMP Tutorial" or GIMP "Walkthrough" on Youtube and you'll come across several helpful videos, including a "GIMP 101" series that is at least 3 videos long that will take you through some of the basics.
I hope that helps!