Ubuntu – gimp -how to remove background of scanned text

1. Select Layer → Transparency → Add Alpha Channel

2. Select the background using the Fuzzy Selection Tool (Magic Wand)

   and press the Del key.

GIF will allow you single-color transparency, while PNG has full alpha channel support.

So, to make an Animated Gif you have to make layers and give them duration with renaming them and adding seconds like this : Layer 1(100s)

Are you sure you've added the Text to all layers already? I mean when you add a text, that will be on a single layer and you should Merge it with Layers like this :

1.You add text. 2.Right click on text's layer ~> Merge Down so it merges Text Layer with the layer that's at bottom of this.

3.Now you have one layer with text.

You should Merge your text with all layers to have it for the whole duration.

Also, for Script-fu Effects similar to outerglow, you should do this too, or to do this easier, when you're making effect, check up "Merge With Layer" and it's done!

Hope it helps.