Photoshop - resizing an image

[SouthernShadows]

Hello!

I'm a brand-spanking new poster who's been hanging around the site for a while, looking at tutorials and working on teaching myself how to do digital cartography with Photoshop, Gimp and CC3.

I'm currently working on a map for a D&D campaign I'll be running and I'm planning on using the Obsidian Portal website to host my campaign information.

When I made my map, I set the dimension as 1920x1080. I've just now discovered that Obsidian Portal only works with square map shapes and when I try to upload my map, it's horribly distorted. I worked very hard on this map and I want it to look good for anyone who swings by my camapign page.

Is there a way to resize an image to make it square, say 2000x2000 without distorting the image? Can I add something on to the map to make it larger?

I'm just starting out so any advice is welcome

Thank you!

[Midgardsormr]

That's a really odd restriction.

Image > Canvas Size

You can set your new dimensions there. By default it will place your existing image in the center of the new, larger workspace. You can use the Anchor widget to change it so that your image is flush with one side or one corner. For instance, if you wanted to use the new space to add a legend or a title.

This dialogue will not rescale, distort, or filter your existing image in any way. It just adds empty space. Be careful not to make the canvas smaller than your existing image, though, or it will be cropped.

[johnvanvliet]

that is a odd size

computers work the most efficient when the image dimensions are a "power of two"
2,4,8,16,32,64,128,256,512,1024,2048,4096,8192,163 84,...

from there web site
https://www.obsidianportal.com/campaigns
a link

https://the-concord-of-ashes.obsidia...com/maps/23150

it looks like they are using g-map tiles
these do need to be square

[SouthernShadows]

Thank you very much for the tips!

I'll add something to the map to fill up the empty space

[Midgardsormr]

It's not so odd a size; it's the resolution of HDTV. I make maps at the same resolution when my intent is to display them in the living room on my television.

[johnvanvliet]

2000 is on a web site

1080 ( TV ) is not

[Midgardsormr]

Ah, I thought you were referring to the original resolution of 1920x1080, not the proposed resolution of 2000x2000. In any case, you're right that 2048 is slightly easier for a computer to handle, which would lead to a miniscule improvement in performance. Probably not enough that anyone would notice, though.