While in photoshop it's HD, My GIF saves blurry and pixelated. Why?

[IonutTuduce]

So, i wanted to create a gif animation on a thread design ( 1000 W / 2305 H ) and in photoshop quality is perfect, but when it saves, it saves pixelate..

PHOTOSHOP:

AFTER I SAVED:

[Theresa J]

That’s just the nature of a gif because the colors are reduced way down.

[Semaphoric]

To add to what Theresa J said, You're going from 16777216 colors down to 256. Plus, GIF doesn't support partial transparency: each pixe is either fully opaque, or fully transparent.