Why is the image I saved/exported in photoshop blurred?

[Oxycoedone]

I've been trying to make art with Photoshop, and when I saved the image, it appeared blurred the next time I opened it. Is there any way of solving this, in order to revert back to when the image was normal?

I would very much appreciate any help with this issue (especially for to not happen again).

[Oxycoedone]

for it to not happen again*

Sorry about the grammar mistakes.

[D Fosse · Accepted solution]

This file has been resampled to huge dimensions (27 000 x 23 000 pixels!)

Why have you done that, and what is the purpose of the file?

[Oxycoedone]

Much thanks. It's simply pixel art. I think I simply sized it wrong.

[Earth Oliver]

how are you saving the image?