Any know why my gifs are shrinking

[OTPBoss]

So I am trying to host some thread GFX I made on multiple Gif hosting sites and they come out really small.
I have tried to increase the sizing but it results in blurry results. The originals were much larger than this i do not understand what is happening... The original gif is 1700 width, but it gets resized to 400 or something. Any input on this would be greatly appreciated

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