GIMP How to make existing gif background transparent - Graphic Design Stack Exchange

I have the following gif, how to make the grey background transparent if not white?

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GIMP How to make existing gif background transparent - Graphic Design Stack Exchange

Gimp Gif transparency issue - Graphic Design Stack Exchange

dots/.config/gimp/pluginrc at master · jaagr/dots · GitHub

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How to Make Background Transparent in Gimp A developer's notes

Release notes/1.0/de - Inkscape Wiki

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image - Using ImageMagick to change background of an animated gif into transparent, but frames overlapped. How to solve? - Stack Overflow

transparency - GIMP - How to make a GIF with transparent background - Graphic Design Stack Exchange

How to Remove Background of an Image Using GIMP - javatpoint

Set up a file: vector or raster, resolution, color mode and file format

How to Remove Background In GIMP