How to set a fixed size for all images

Question

4.11/5 (2 votes)

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Hello,
Well here is my problem.
I have a group of images

<div id="slider">
    <img src="images/ScalesEmulator.png"/>
    <img src="images/discussing.jpg" />
    <img src="images/four-main-steps-for-a-software-process-cycle.jpg"/>
    <img src="images/globe.jpg"/>
    <img src="images/shake-hands.jpg" />
</div>

styled with:

#slider {
	float: left;
	height:320px;
	width:650px;
}

#slider img {
	width:650px;
	height:320px;	
}

There is some JavaScript code which will make them keep changing between themselves. The problem is that images might be either smaller or bigger than the size I set on css and for some reason they won't fill the space it was set to them.
So far I couldn't find a way to do this. If I am required to change every picture I have to place on the site, I will do it. But I would like the opinion of people that have more experience with website about my options.

Thanks

Posted 16-Oct-13 13:14pm

Paulo Augusto Kunzel

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2 solutions

Solution 1

try this

in your .css

CSS

img { 
  width: 200px;
  height: 200px; 
}

of cause set your own sizes.

Posted 16-Oct-13 13:43pm

Nico_Travassos

Updated 16-Oct-13 13:46pm

v2

Comments

Paulo Augusto Kunzel 16-Oct-13 19:51pm

Hi Nico,

As you can see from my example, I already have that set. Also, I've tried min-height, min-width before that...

Sergey Alexandrovich Kryukov 16-Oct-13 20:24pm

This, generally speaking, will distort the aspect ratio of images. In practice, both width and height should never be specified, only one or another, or none.
Also you could warn OP about the danger of re-sampling to a larger size, it may give unacceptable quality. And re-sampling down would increase traffic without a good reason...
—SA

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Sergey Alexandrovich Kryukov · Accepted Answer · 2013-10-16T14:28:00

Please see my comments to the Solution 1.

You should always specify either width or height, or none of them. If you specify both, you risk showing some of the images in wrong aspect ratio. Please see:
http://en.wikipedia.org/wiki/Aspect_ratio[^].

Re-sampling down may mean waste of traffic resources. And re-sampling up usually gives unacceptable quality. That said, even if you use CSS or <code><img></img> tag attributes to modify the sizes of images, you should better have source images on the server side preliminary re-sampled closer to the required sized. It's not a problem to keep source image files in two versions: full-size and the version for thumbnails.

—SA