how to upload a skin

[kingpepsi]

ive got a skin from the same website I've always used and its not working it  it just says 

• Skin file invalid: Check the skin file is actually an image!

so I'm unsure of what to do now I've tried uploading a PNG of it but that fails aswell when I hit save

[Blue_3dx]

if the skin the is invalid try checking if your skin looks somewhat like this https://cdn.classicube.net/skin/Blue_3dx.png

Edited November 26 by Blue_3dx

[Goodly]

The skin file size is not correct. It has to be exactly 512x512, 256x256, 128x128, or 64x64. Try finding a different skin or a better website. Basically that skin is blurry and won't look right in game even if you could upload it
 

[home_gaming]

Planet minecraft is a good skin site

[kingpepsi]

thats what I tried didn't work don't mind the name I just like the color scheme

[kingpepsi]

do you know any other websites that I could use?