Update: There is a much easier way to go about making transparent logo with Gimp, because I’ve found out by Googling! Still, I’ve decided to leave this post intact even though following this tutorial will only get you go about using the tedious way of making a transparent logo with Gimp! It’s up to you to Googling for an easier way or following this tutorial. I forgot the link that I’d found on the much simpler and faster way of doing this, and so I can’t really post the link here for you! Sadly, isn’t it?
Before we start this tutorial, just for your information, I’m using Gimp 2.6 plus, and so if you’re using older or newer version of Gimp, this tutorial may not be quite accurate with your current Gimp version.
You can create a transparent logo with Gimp! How? Go to File >> New, and a pop up box will ask you to select a preset template size or create a custom template size. You can pick a preset template size or create your own custom template size. Here comes an important step, make sure you also go to Advance, and pick Transparency as your template background (hint: Fill With box). Click OK to create a new empty template.
So let create our text logo first before we can turn it into a transparent logo. Click on Text Tool in your tool box or go to menu >> Tools >> Text. After you have Text tool select, locate a spot on your empty template, pick a favorite font inside your font text box, change the font color, choose the font size (preferably very large size), and then create a text logo by typing out your logo inside your empty template.
Very well, now you need to go to Filters >> Alpha to Logo >> Glowing Hot. Gimp is now transforming your text into a logo using the Glowing Hot filter. Of course, you can pick other logo filters, but Glowing Hot is the easiest one to show the effect of logo transparency, I think.
Oh no, what’s happening to our transparent background? Don’t fret! Even though the logo filter Glowing Hot has replaced our transparency background into a solid color background, but we can get our transparency background back later.
At this stage, you need to add an alpha channel (transparency layer) to your whole template. To do this you need to go to Layer >> Transparency >> Add Alpha Channel.
Good, now you need to go to Tools >> Paint Tools >> Eraser or do Shift+E shortcut key combination to select the eraser tool. Inside the eraser box, choose the biggest brush size, and then all you have to do is to brush the whole template with your eraser tool. As you can see, this action allows you to erase the background that was replaced by the logo filter to reveal a transparent background.
Now you can crop your logo to the portion that you like, and then also scale the logo to the size that you like. Finally, you can now upload the brand new transparent logo you’ve created to your website. Have fun creating your transparent logos with Gimp!