![]() ![]() That would be preferably PNG, but GIF would work as well. to a file format which supports transparency. įinally, export the transparent image with File → Export As. Once the desired transparency area is selected, simply hit. When this happens, use +Drag with a Select tool of your choice to select a subtractive selection area. In this case, and barely visible, nine desired pixels in the middle of the pipe were also selected for deletion. Some of the desired image area might be selected as well because the colour matched. In between, hit + to undo.Īt times, it proves difficult to get the colour selection exactly right. Again, run a few tries while adjusting Threshold for best results. Nonetheless, do experiment with these settings and choose what looks best. For this particular example I chose not to apply Antialiasing nor Feather edges. This time around, do select Fill transparent areas as well as Sample merged. ![]() From the menu on the bottom-right side of the screen, select your image layer. It might be tempting to perform Colour to Transparency, however this would also change semi-transparent areas within the desired image area. On Windows: Open GIMP on your Windows computer and select the image you wish to edit. Step 3: After clicking the Add Alpha Channel, click the Fuzzy Select Tool on the tools. In this way, this will make your background transparent when rendered instead of white or black. Right-click using your mouse and select Add Alpha Channel. After that, go to the image layer section. The right thing to do now is Select → By Colour. Choose in your computer file which image you want to edit. ![]() Using the wand with a low threshold (<10), select the background (shift-click on any closed areas that arent selected, such as the inside of the upper curve of the final S). However, one can also use the eyedropper tool to pick a colour from anywhere on the desktop. Layer Transparency Add alpha channel (if disabled then it’s already there). Here, I used f3f3e9 as a background colour for plain colour filling. (In this respect, Adobe Photoshop is no different.) Hence, choose a colour which is compatible with the background on which the resulting picture will eventually be used.Ĭlick on the background colour rectangle in the upper half of the Tool Options toolbox window to change the background colour. for the whole image), which is useful for reconstructing transparency when you have only one version of the image on a solid color background. Some colour mixing will be inevitable and even desired. GIMP does also have a 'Color Erase' feature (as a blend mode for the Bucket Fill tool, or as Color to Alpha. Do select BG colour fill and Sample merged and run a few tries while adjusting Threshold for best results. Within the Bucket Fill toolbox options, select Fill transparent areas only when necessary. The next step is optional and consist in filling the area that should become transparent with a plain colour. This is done by selecting Layer → Tranparency → Add Alpha Channel. If this is the case, add an alpha transparency channel. Some image types lack a transparency channel JPG for example. Note: This tutorial is also available in PDF. ![]()
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