Can't select "thumbnail", "medium", or "large" for images when uploading - only "full size".

[Lakjin]

I recently moved my website from one server to another. On my old server I was able to upload images and select what size I want to display them as just fine. However, on my new server when uploading images I can no longer select "thumbnail", "medium", or "large" for image size - only "full size". The odd thing is, though, that after I insert an image, I can go back in and make it smaller via the percentage values.

Any idea what is up? Both servers are CentOS 64-bit.

Thanks.

[Lakjin]

BTW I came across tickets https://core.trac.wordpress.org/ticket/8231 and https://core.trac.wordpress.org/ticket/7039 but I was unable to gain a solution from them.

[miqrogroove]

Please visit the support forums at ​http://wordpress.org/support/forum/3

[dd32]

Chances are, in this case, your new server is lacking GD support.

[Lakjin]

Replying to miqrogroove:

Please visit the support forums at ​http://wordpress.org/support/forum/3

I already tried the support forum (​http://wordpress.org/support/topic/366509). Didn't get any reply.

[Lakjin]

Replying to dd32:

Chances are, in this case, your new server is lacking GD support.

Can you please explain to me what is "GD support" and how I can install it?

Thank you.

[dd32]

Unfotunately not getting a reply on the suport forums does not mean come to Trac.

You'll need to contact your hosting provider for the GD extension.

Please do not re-open this ticket again, You may add replies, you may not however get a response due to this not being for support queries.