I was wondering if in the width and height <img> attributes, I could specify width and height as percentages?
Well, I guess that is obvious, because when I try so, it resizes, but it appears to skew the quality of my image.
Here is an example of my markup with fixed attributes:
<img src="#" width="346" height="413">
Now, while trying to scale this down, say by half, via percentages:
<img src="#" width="50%" height="50%">
I get something completely different than:
<img src="#" width="173" height="206.5">
I think I'm just fundamentally mistaking my percentage markup or something because there is a noticeable difference between my second and third example visually.
This question is related to
html
image
image-size
From W3Schools
The height in percent of the containing element (like "20%").
So I think they mean the element where the div is in?
Given the lack of information regarding the original image size, specifying percentages for the width and height would result in highly erratic results. If you are trying to ensure that an image will fit within a specific location on your page then you'll need to use some server side code to manage that rescaling.
width="50%" and height="50%" sets the width and height attributes to half of the parent element's width and height if I'm not mistaken. Also setting just width or height should set the width or height to the percentage of the parent element, if you're using percents.
Here is the difference:
This sets the image to half of its original size.
<img src="#" width="173" height="206.5">
This sets the image to half of its available presentation area.
<img src="#" width="50%" height="50%">
For example, if you put this as the only element on the page, it would attempt to take up 50% of the width of the page, thus making it potentially larger than its original size - not half of its original size as you are expecting.
If it is being presented at larger than original size, the image will appear greatly pixelated.
There is actually a way to do this with html only. Just sets:
<img src="#" width height="50%">
Try use scale property in css3:
75% of original:
-moz-transform:scale(0.75);
-webkit-transform:scale(0.75);
transform:scale(0.75);
50% of original:
-moz-transform:scale(0.5);
-webkit-transform:scale(0.5);
transform:scale(0.5);
You can set one or the other (just not both) and that should get the result you want.
<img src="#" height="50%">
Source: Stackoverflow.com